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Dr. Imran Ali
Department of Environmental Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China

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0 Magnetic Nanoparticles
0 Surface Modification
0 Adsorption technologies
0 Materials fabrication
0 Membrane capsules

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Magnetic Nanoparticles
Metal–organic frameworks and solar-assisted biochar for water/wastewater treatment applications

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Review
Published: 31 July 2021 in Chemosphere
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The discharge of chromium (Cr) contaminated wastewater is creating a serious threat to aquatic environment due to the rapid pace in agricultural and industrial activities. Particularly, the long-term exposure of Cr(VI) polluted wastewater to the environment is causing serious harm to human health. Therefore, the treatment of Cr(VI) contaminated wastewater is demanding widespread attention. Regarding this, the bioremediation is being considered as a reliable and feasible option to handle Cr(VI) contaminated wastewater because of having low technical investment and operating costs. However, certain factors such as loss of microorganisms, toxicity to microorganisms and uneven microbial growth cycle in the presence of high concentrations of Cr(VI) are hindering its commercial applications. Regarding this, microbial immobilization technology (MIT) is getting great research interest because it could overcome the shortcomings of bioremediation technology's poor tolerance against Cr. Therefore, this review is the first attempt to emphases recent research developments in the remediation of Cr(VI) contamination via MIT. Starting from the selection of immobilized carrier, the present review is designed to critically discuss the various microbial immobilizing methods i.e., adsorption, embedding, covalent binding and medium interception. Further, the mechanism of Cr(VI) removal by immobilized microorganism has also been explored, precisely. In addition, three kinds of microorganism immobilization devices have been critically examined. Finally, knowledge gaps/key challenges and future perspectives are also discussed that would be helpful for the experts in improving MIT for the remediation of Cr(VI) contamination.

ACS Style

Yating Jiang; Fei Yang; Min Dai; Imran Ali; Xing Shen; Xiaoting Hou; Saleh S. Alhewairini; Changsheng Peng; Iffat Naz. Application of microbial immobilization technology for remediation of Cr(VI) contamination: A review. Chemosphere 2021, 286, 131721 .

AMA Style

Yating Jiang, Fei Yang, Min Dai, Imran Ali, Xing Shen, Xiaoting Hou, Saleh S. Alhewairini, Changsheng Peng, Iffat Naz. Application of microbial immobilization technology for remediation of Cr(VI) contamination: A review. Chemosphere. 2021; 286 ():131721.

Chicago/Turabian Style

Yating Jiang; Fei Yang; Min Dai; Imran Ali; Xing Shen; Xiaoting Hou; Saleh S. Alhewairini; Changsheng Peng; Iffat Naz. 2021. "Application of microbial immobilization technology for remediation of Cr(VI) contamination: A review." Chemosphere 286, no. : 131721.

Journal article
Published: 30 July 2021 in Journal of Molecular Liquids
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SnO2-CeO2 nanocomposite materials (0.1SnO2–0.9CeO2, 0.15SnO2–0.85CeO2, 0.2SnO2–0.8CeO2, and 0.3SnO2–0.7CeO2) were prepared by co-precipitation in a water-isopropanol solution followed by thermal treatment. The materials were characterized by EDX, TEM, XRD and low-temperature nitrogen adsorption and used for comparative removing dye azorubine in water. It was shown that 0.15SnO2-0.85CeO2 solid solution; based on the crystal lattice of cerium dioxide; had a 15 mol % content of tin. The material was nearly spherical particles of size 8–10 nm. The adsorption followed Langmuir, Freundlich, Temkin, Flory-Higgins, Dubinin-Radushkevich isotherms and kinetics pseudo-first-order, pseudo-second-order, Elovich-Chen-Clayton, Boyd, and Vebber-Morris models. The Ho and Langmuir models were most adequately described the process of azorubine adsorption. The maximum adsorption of azorubine (96.1%) was achieved with 20 min of contact time, pH 6, azorubine concentration 20 mg/L and adsorbent dose 1.0 g/L. The regeneration of the adsorbent was achieved by catalytic oxidative destruction of azorubine with hydrogen peroxide. The reported adsorbent had an exceptional capability to remove azorubine in water with the loss of about 10 % adsorption capacity after running 6 times. The reported process may be assumed as an effective method for the removal of azorubine from water with the economy due to the absence of wastewater during the regeneration of the adsorbent.

ACS Style

Imran Ali; Tatiana Kon'Kova; Elena Liberman; Ekaterina Simakina; Zeid A. Alothman; Taghrid S. Alomar; Mohammad Ataul Islam. Preparation and characterization of SnO2-CeO2 nanocomposites: Sorption, modeling and kinetics for azorubine dye removal in water. Journal of Molecular Liquids 2021, 117119 .

AMA Style

Imran Ali, Tatiana Kon'Kova, Elena Liberman, Ekaterina Simakina, Zeid A. Alothman, Taghrid S. Alomar, Mohammad Ataul Islam. Preparation and characterization of SnO2-CeO2 nanocomposites: Sorption, modeling and kinetics for azorubine dye removal in water. Journal of Molecular Liquids. 2021; ():117119.

Chicago/Turabian Style

Imran Ali; Tatiana Kon'Kova; Elena Liberman; Ekaterina Simakina; Zeid A. Alothman; Taghrid S. Alomar; Mohammad Ataul Islam. 2021. "Preparation and characterization of SnO2-CeO2 nanocomposites: Sorption, modeling and kinetics for azorubine dye removal in water." Journal of Molecular Liquids , no. : 117119.

Journal article
Published: 30 July 2021 in International Journal of Environmental Analytical Chemistry
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With the advent of technologies in many countries, pharmaceutically active compounds (PhAC), personal care products (PPCPs), and other medicines have been treated by particular facilities. Although the overall rate of PhACs extraction from hospital wastewater (HWW) through different secondary wastewater treatment plants (WWTPs) has been high equal to 79–99%, activity and proliferation of neurotransmitters are inhibited by antiseptics due to the low removal rate of some elements, such as naproxen, excellent-performance technologies are still needed. Venlafaxine and citalopram are the most used antidepressants associated with 10–12% removal value through WWTPs. While HWW contains various types of antibiotics, they improve biocides’ bacterial tolerance against treatment. Ozonation is one of the methods to enhance biodegradability, whereas biofilm reactors have effectively removed emerging contaminants (ECs). Combined activate sludge (CAS) and membrane filtration bioreactors will potently exclude compounds, but previous studies show that membrane filtration bioreactors are around 30%-55% more efficient. ECs elimination in tertiary treatment has shown its great ability rather than conventional treatment sectors. Moreover, ozone treatment can decrease in PPCPs value as 90–98% through activated carbon beds. Activated carbon (NAC) has shown its full capability for micropollutants removal from PAC and membrane bioreactors as well as PPCP reside removal from treated effluents. The ratio of infect COVID-19 in one area was directly proportional, as revealed by SARS-CoV-2 detection in both HWW and wastewater in almost all countries. In this research study, multiple treatment techniques are evaluated in order to offer great-performance technology.

ACS Style

Nadeem A Khan; Sirajuddin Ahmed; Izharul Haq Farooqi; Imran Ali. Innovative method used in modern time for the treatment of hospital wastewater. International Journal of Environmental Analytical Chemistry 2021, 1 -13.

AMA Style

Nadeem A Khan, Sirajuddin Ahmed, Izharul Haq Farooqi, Imran Ali. Innovative method used in modern time for the treatment of hospital wastewater. International Journal of Environmental Analytical Chemistry. 2021; ():1-13.

Chicago/Turabian Style

Nadeem A Khan; Sirajuddin Ahmed; Izharul Haq Farooqi; Imran Ali. 2021. "Innovative method used in modern time for the treatment of hospital wastewater." International Journal of Environmental Analytical Chemistry , no. : 1-13.

Original paper
Published: 19 July 2021 in International Journal of Environmental Science and Technology
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The facile synthesis of the advanced cobalt-based materials [1.0Co/Al2O3 (A), 0.5Co/Al2O3 (B), 3.5CoNaY (C) and 0.4CoHY (D)] is reported. The characterization of the materials was carried out by X-ray photoelectronic, energy-dispersive X-ray, atomic absorption and low-temperature nitrogen adsorption methods. These materials were used for a comparative degradative and adsorptive removal of carmoisine azo dye in water. The adsorptive and degradative removals were 62.0–96.1% and 68.1–96.1% for all four materials. The degradation was occurred by hydroxyl radicals and peroxy free radicals. The adsorptive removal followed Langmuir, Temin and Dubinin–Radushkevich models. The adsorption obeyed pseudo-first-order kinetics and liquid film diffusion mechanism. The results indicated that both degradative and adsorptive phenomena had comparative removal capacities. The removal capacities of all four materials were C > A > D > B. The maximum removal was obtained by material C (96.1%) and A (90.0%) in a wide pH range of 3.0–9.0. The reported methods are very effective, efficient and inexpensive for the removal of carmoisine azo dye in water. These methods may be used to remove the reported dye at a large scale in any water resource.

ACS Style

I. Ali; T. Kon’Kova; I. Belkina; E. Galunin; A. Rysev; A. Morozov; A. S. A. Almalki; R. J. Obaid; M. A. Alsharif. Facile synthesis and characterization of advanced cobalt materials for degradative and adsorptive removal of carmoisine in water. International Journal of Environmental Science and Technology 2021, 1 -16.

AMA Style

I. Ali, T. Kon’Kova, I. Belkina, E. Galunin, A. Rysev, A. Morozov, A. S. A. Almalki, R. J. Obaid, M. A. Alsharif. Facile synthesis and characterization of advanced cobalt materials for degradative and adsorptive removal of carmoisine in water. International Journal of Environmental Science and Technology. 2021; ():1-16.

Chicago/Turabian Style

I. Ali; T. Kon’Kova; I. Belkina; E. Galunin; A. Rysev; A. Morozov; A. S. A. Almalki; R. J. Obaid; M. A. Alsharif. 2021. "Facile synthesis and characterization of advanced cobalt materials for degradative and adsorptive removal of carmoisine in water." International Journal of Environmental Science and Technology , no. : 1-16.

Journal article
Published: 16 July 2021 in Journal of Molecular Liquids
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γ-Cyclodextrin-graphene oxide nanocomposite was synthesized and characterized for sorption, kinetics, thermodynamics, and simulation studies of tetracycline and chlortetracycline antibiotics removal from water. The optimized sorption parameters were 400 mg/L concentration, 30 min contact time, pH 8.0, dose 1.0 g/L and 25 °C temperature. The sorption followed Langmuir, Temkin, and D-Rs models. The maximum removals of tetracycline and chlortetracycline were 91.25 and 93.75% respectively, with a variation of percentage removal at different pHs ranges [355.0 (88.75%), 360.0 (90.0%) and 365.0 mg/g (91.25%) for tetracycline and 365.0 (91.25%), 370.0 (92.5%) and 375.0 mg/g (93.75%) chlortetracycline]. The sorption followed pseudo-second kinetic order reaction and liquid film diffusion kinetic model. The positive values of entropy (12.043 & 12.842 kJ/mol.K) and negative values of enthalpy (-0.944 & −1.113 kJ/mol) and free energy (-14.60 to −13.55 kJ/mol) confirmed the spontaneous sorption at all temperatures. The simulation results agreed with the sorption results. Also, the modeling was used to ascertain the supramolecular mechanism, which involved hydrogen bonding and π-π interactions.

ACS Style

Zeid A. Alothman; Najla AlMasoud; X.Y. Mbianda; Imran Ali. Synthesis and characterization of γ-cyclodextrin-graphene oxide nanocomposite: Sorption, kinetics, thermodynamics and simulation studies of tetracycline and chlortetracycline antibiotics removal in water. Journal of Molecular Liquids 2021, 116993 .

AMA Style

Zeid A. Alothman, Najla AlMasoud, X.Y. Mbianda, Imran Ali. Synthesis and characterization of γ-cyclodextrin-graphene oxide nanocomposite: Sorption, kinetics, thermodynamics and simulation studies of tetracycline and chlortetracycline antibiotics removal in water. Journal of Molecular Liquids. 2021; ():116993.

Chicago/Turabian Style

Zeid A. Alothman; Najla AlMasoud; X.Y. Mbianda; Imran Ali. 2021. "Synthesis and characterization of γ-cyclodextrin-graphene oxide nanocomposite: Sorption, kinetics, thermodynamics and simulation studies of tetracycline and chlortetracycline antibiotics removal in water." Journal of Molecular Liquids , no. : 116993.

Research article
Published: 02 July 2021 in Journal of Chemical Technology & Biotechnology
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Background The determination of enantio-separation, absolute configuration and chiral recognition mechanism of ofloxacin and flumequine was carried out by HPLC and modeling studies. The column used was Chiralcel® OD-H with normal and polar organic mobile phase modes. The exhaustive chiral separation was optimized through various HPLC parameters. Results The selectivity, separation factors and resolution factors for ofloxacin were 8.2 & 9.4, 1.15 and 2.43 in the normal mobile phase while these values were 10.5 & 12.0, 1.14 and 2.40 for flumequine in polar organic mobile phase mode, respectively. The thermodynamic parameters were ΔH (−0.137 J.mol−1), ΔS (7.35 x 10−4 J.mol−1) and ΔG (−0.360 J.mol−1 K−1) for ofloxacin and ΔH (−0.035 J.mol−1), ΔS (21.3 x 10−4 J.mol−1) and ΔG (−0.105 J.mol−1 K−1) for flumequine; confirming spontaneous chiral separation at all temperatures. The chiral recognition mechanism was established by HPLC and modeling results. The modelling binding affinity were − 2.5 kcal/mol (R-enantiomer) & -2.6 kcal/mol (S-enantiomer) for ofloxacin and − 2.30 kcal/mol (R-enantiomer) & -2.40 kcal/mol (S-enantiomer) for flumequine enantiomers. The chiral resolution is controlled by hydrogen bonding, π–π interactions and other forces. Conclusion These methods were applied to monitor ofloxacin and flumequine quinolones in urine samples. Briefly, the developed chiral HPLC methods are effective and may be used to analyze the reported enantiomers in any biological sample.

ACS Style

Imran Ali; Khaled Sekkoum; Nasser Belboukhari; Mohamed Najib Rebizi; Mohammed El Amin Zaid; Kareem Yusuf; Asma A. Alothman; Bayan Ahmed AlJumah; Mohamed Ouladsmane. Determination of enantio‐separation, absolute configuration and chiral recognition mechanism of ofloxacin and flumequine by HPLC and modeling studies. Journal of Chemical Technology & Biotechnology 2021, 1 .

AMA Style

Imran Ali, Khaled Sekkoum, Nasser Belboukhari, Mohamed Najib Rebizi, Mohammed El Amin Zaid, Kareem Yusuf, Asma A. Alothman, Bayan Ahmed AlJumah, Mohamed Ouladsmane. Determination of enantio‐separation, absolute configuration and chiral recognition mechanism of ofloxacin and flumequine by HPLC and modeling studies. Journal of Chemical Technology & Biotechnology. 2021; ():1.

Chicago/Turabian Style

Imran Ali; Khaled Sekkoum; Nasser Belboukhari; Mohamed Najib Rebizi; Mohammed El Amin Zaid; Kareem Yusuf; Asma A. Alothman; Bayan Ahmed AlJumah; Mohamed Ouladsmane. 2021. "Determination of enantio‐separation, absolute configuration and chiral recognition mechanism of ofloxacin and flumequine by HPLC and modeling studies." Journal of Chemical Technology & Biotechnology , no. : 1.

Journal article
Published: 27 June 2021 in Separation and Purification Technology
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In the present research, zero-valent iron (ZVI) was synthesized by carbothermal reduction method and its formation mechanism was studied. The obtained material ([email protected]) was applied as a persulfate (PS) catalyst for ciprofloxacin degradation. Further, Scanning Electron Microscopy (SEM) of [email protected] has shown that the crystal shape of Fe2O3 changed with the increase in temperature, and also revealed the spherical morphology of ZVI. X-ray Diffraction (XRD) further verified the process of conversion of Fe2O3 to Fe3O4 and then to ZVI. X-ray Photoelectron Spectroscopy (XPS) revealed that the change of iron valence state during the conversion process and the peak area of Fe2+ increased with sintering temperature. The effect of experimental parameters including pH, [email protected] dosage, PS concentration and temperature on ciprofloxacin degradation, were thoroughly investigated. The results illustrated that the [email protected] has excellent catalytic performance and can remove 90.78% of ciprofloxacin within 120 min. Free radical quenching experiments confirmed that the reaction of ciprofloxacin with ∙OH and SO4∙- mainly occurs on the [email protected] surface. Based on the different experiments, it was proposed that degradation mechanism of ciprofloxacin via [email protected] includes three aspects. Thus, it was found that carbothermal synthesis of [email protected] is cost effective and potential technology for ciprofloxacin remediation.

ACS Style

Yufeng Du; Min Dai; Iffat Naz; Xiangying Hao; Xixi Wei; Rong Rong; Changsheng Peng; Imran Ali. Carbothermal reduction synthesis of zero-valent iron and its application as a persulfate activator for ciprofloxacin degradation. Separation and Purification Technology 2021, 275, 119201 .

AMA Style

Yufeng Du, Min Dai, Iffat Naz, Xiangying Hao, Xixi Wei, Rong Rong, Changsheng Peng, Imran Ali. Carbothermal reduction synthesis of zero-valent iron and its application as a persulfate activator for ciprofloxacin degradation. Separation and Purification Technology. 2021; 275 ():119201.

Chicago/Turabian Style

Yufeng Du; Min Dai; Iffat Naz; Xiangying Hao; Xixi Wei; Rong Rong; Changsheng Peng; Imran Ali. 2021. "Carbothermal reduction synthesis of zero-valent iron and its application as a persulfate activator for ciprofloxacin degradation." Separation and Purification Technology 275, no. : 119201.

Review article
Published: 27 May 2021 in Journal of Cleaner Production
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In recent years, zero-valent iron (ZVI) has been extensively employed for the elimination of organic and inorganic contaminants. However, the performance of ZVI was restrained due to the inherent properties in the process of pollutants sequestration like agglomeration, surface passivation, and sensitivity to the pH and dissolved oxygen (DO) in the environment. To combat these issues, ZVI-based materials were utilized to attenuate the drawbacks of ZVI. Therefore, in this review, the representative hazardous hexavalent chromium (Cr(VI)) was chosen as the target pollutant to discuss the performance, limitations, and future of ZVI-based materials. The prevailing preparation methods of ZVI-based materials could be classified into aqueous reduction and mechanical procedures. Further, the conventional ZVI-based materials were mainly encompassed carbon-ZVI, sulfur-ZVI, bimetallic materials of ZVI, and magnetite-ZVI composites. A new insight into the co-effect of pH and DO on Cr(VI) removal by ZVI through five pathways was also proposed. The mechanism of Cr(VI) elimination by ZVI-based materials was dominant through the combination of reduction, adsorption, and co-precipitation, wherein the enhanced reduction capability of ZVI-based materials compared to their monometallic counterpart was critically scrutinized. Besides, some field applications of ZVI-based materials such as ZVI incorporation into the permeable reactive barrier (PRB) to remediate groundwater have also been examined. Finally, barriers in market penetration of ZVI-based materials in removing Cr(VI) have been highlighted which would open a new window for the researcher to accomplish the research gaps for shifting applications of ZVI-based materials from lab-scale to real or commercial implementations.

ACS Style

Yi Fang; Xiange Wu; Min Dai; A. Lopez-Valdivieso; Saleem Raza; Imran Ali; Changsheng Peng; Juying Li; Iffat Naz. The sequestration of aqueous Cr(VI) by zero valent iron-based materials: From synthesis to practical application. Journal of Cleaner Production 2021, 312, 127678 .

AMA Style

Yi Fang, Xiange Wu, Min Dai, A. Lopez-Valdivieso, Saleem Raza, Imran Ali, Changsheng Peng, Juying Li, Iffat Naz. The sequestration of aqueous Cr(VI) by zero valent iron-based materials: From synthesis to practical application. Journal of Cleaner Production. 2021; 312 ():127678.

Chicago/Turabian Style

Yi Fang; Xiange Wu; Min Dai; A. Lopez-Valdivieso; Saleem Raza; Imran Ali; Changsheng Peng; Juying Li; Iffat Naz. 2021. "The sequestration of aqueous Cr(VI) by zero valent iron-based materials: From synthesis to practical application." Journal of Cleaner Production 312, no. : 127678.

Journal article
Published: 30 April 2021 in Journal of Chromatography B
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The current article describes the chiral separation of tioconazole, miconazole, isoconazole, sertaconazole and terconazole, with Lux i-Cellulose 5 and Lux i-Amylose-1 chiral columns under organic polar, normal and reversed mobile phases modes. The mobile phase flow rate was 1 mL/min with 230 nm detection at 25 ± 1 °C temperature. The polar organic mobile phases offered certain advantages for separation such as short analysis time, order of elution, high plate numbers and favorable signal to noise ratio. The values of k, α and Rs were ranged from 0.6 to 7.87, 1.10 to 1.62 and 0.37 to 5.72 in polar organic, 0.15 to 43.86, 1.02 to 2.01 and 0.36 to 8.03 in normal, and 0.34 to 15.99, 1.03 to 1.40 and 0.59 to 4.18 in reversed phases modes, respectively. The reported methods were applied in urine samples and the results were satisfactory. The reported methods were applied to the analysis of urine samples.

ACS Style

Imran Ali; Nadia Boumoua; Khaled Sekkoum; Nasser Belboukhari; Ayman Ghfar; Mohamed Ouladsmane; Bayan Ahmed AlJumah. A comparison of chiral resolution of antifungal agents on different polysaccharide chiral columns under various mobile phase modes: Application in the biological samples. Journal of Chromatography B 2021, 1175, 122738 .

AMA Style

Imran Ali, Nadia Boumoua, Khaled Sekkoum, Nasser Belboukhari, Ayman Ghfar, Mohamed Ouladsmane, Bayan Ahmed AlJumah. A comparison of chiral resolution of antifungal agents on different polysaccharide chiral columns under various mobile phase modes: Application in the biological samples. Journal of Chromatography B. 2021; 1175 ():122738.

Chicago/Turabian Style

Imran Ali; Nadia Boumoua; Khaled Sekkoum; Nasser Belboukhari; Ayman Ghfar; Mohamed Ouladsmane; Bayan Ahmed AlJumah. 2021. "A comparison of chiral resolution of antifungal agents on different polysaccharide chiral columns under various mobile phase modes: Application in the biological samples." Journal of Chromatography B 1175, no. : 122738.

Journal article
Published: 24 April 2021 in Journal of Molecular Liquids
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The removal of actinides and rare earth elements (REEs) in nitric acid solutions; produced in nuclear processes; is a challenging job. The present article describes the sorption behavior of oxidized multilayer graphene (o-MG) to actinides and rare earth elements (REEs) in nitric acid solutions (up to 3 mol L-1 HNO3), including nitrogen and phosphorus-containing reagents. The conditions for obtaining new sorption materials in a compact form; by adding directly a reagent (organic ligand) and a suspension of o-MG to nitric acid solutions; were optimized. o-MG was modified by using tetraoctyldiglycolamide, diphenyl-dibutyl-carbamoyl-methyl-phosphine oxide, tri-octyl-phosphinoxide, di-(2-ethylhexyl) phosphoric acid, tributyl phosphate and di-2-ethyl-hexyl-methyl-phosphonate reagents were used. The formation time of the solid-phase extractants compact phase was 20–240 min. The new materials sorption capacity to U (VI), Th (IV), Pu (IV), La (III), Ce (III) and Eu (III) in nitric acid solutions (3 mol L-1 HNO3) was determined. The elements distribution coefficients were Kd ~ 103-104 mL g−1. The efficiency of the obtained materials was confirmed by the data on the solid-phase isolation and separation of actinides and REEs from nitric acid solutions (3 mol L1 HNO3) in the presence of macro components (Cs, Sr, Fe, Mo, Pd, Zr, Co), which can be formed during recycling processes of spent nuclear materials and components used in nuclear medicine.

ACS Style

Imran Ali; E.A. Zakharchenko; G.V. Myasoedova; N.P. Molochnikova; A.A. Rodionova; V.E. Baulin; A.E. Burakov; I.V. Burakova; A.V. Babkin; E.A. Neskoromnaya; A.V. Melezhik; A.G. Tkachev; Mohamed A. Habila; Adel El-Marghany; Mohamed Sheikh; Ayman Ghfar. Preparation and characterization of oxidized graphene for actinides and rare earth elements removal in nitric acid solutions from nuclear wastes. Journal of Molecular Liquids 2021, 335, 116260 .

AMA Style

Imran Ali, E.A. Zakharchenko, G.V. Myasoedova, N.P. Molochnikova, A.A. Rodionova, V.E. Baulin, A.E. Burakov, I.V. Burakova, A.V. Babkin, E.A. Neskoromnaya, A.V. Melezhik, A.G. Tkachev, Mohamed A. Habila, Adel El-Marghany, Mohamed Sheikh, Ayman Ghfar. Preparation and characterization of oxidized graphene for actinides and rare earth elements removal in nitric acid solutions from nuclear wastes. Journal of Molecular Liquids. 2021; 335 ():116260.

Chicago/Turabian Style

Imran Ali; E.A. Zakharchenko; G.V. Myasoedova; N.P. Molochnikova; A.A. Rodionova; V.E. Baulin; A.E. Burakov; I.V. Burakova; A.V. Babkin; E.A. Neskoromnaya; A.V. Melezhik; A.G. Tkachev; Mohamed A. Habila; Adel El-Marghany; Mohamed Sheikh; Ayman Ghfar. 2021. "Preparation and characterization of oxidized graphene for actinides and rare earth elements removal in nitric acid solutions from nuclear wastes." Journal of Molecular Liquids 335, no. : 116260.

Review
Published: 23 March 2021 in Chromatographia
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2D-HPLC is an important development in chiral separations due to its excellent capability to resolve the enantiomers. This article describes the latest update in the chiral resolution of racemates using 2D-HPLC. The various aspects of the chiral resolution such as validation, optimization, and applications are discussed in both biological and environmental matrices. Some latest developments of nano-2D-HPLC are also included. Besides, efforts are made to discuss the challenges and future perspectives. During the preparation of this article, it was observed that much work has not been done in this direction and only a few papers describe the application of 2D-HPLC in the chiral separation. There is an urgent need to develop more 2D-HPLC methods for a variety of racemates. This article will be useful to the investigators, academicians and industry persons in the future to improve 2D-HPLC for the chiral resolution of the various racemates.

ACS Style

Imran Ali; Mohd. Suhail; Hassan Y. Aboul-Enein; Tatiana Kon’Kova. Recent Trends in Chiral Separations by 2D-HPLC. Chromatographia 2021, 84, 535 -548.

AMA Style

Imran Ali, Mohd. Suhail, Hassan Y. Aboul-Enein, Tatiana Kon’Kova. Recent Trends in Chiral Separations by 2D-HPLC. Chromatographia. 2021; 84 (6):535-548.

Chicago/Turabian Style

Imran Ali; Mohd. Suhail; Hassan Y. Aboul-Enein; Tatiana Kon’Kova. 2021. "Recent Trends in Chiral Separations by 2D-HPLC." Chromatographia 84, no. 6: 535-548.

Original paper
Published: 08 March 2021 in International Journal of Environmental Science and Technology
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Metformin is the largest drug produced globally in metric tons. It has been reported in many water treatment plants and water resources. The analysis of metformin at trace level is important before supplying water to the communities. The present article describes solid-phase micromembrane tip extraction and capillary electrophoretic methods for the analysis of metformin in water using multi-walled carbon nanotubes as a sorbent in the sample preparation method. The maximum extraction of metformin was achieved at 10.0 mg/L metformin, 25 shaking time, 0.5 g/L CNTs dose, 7.0 sorption pH, 30-min desorption time and 12 desorption pH. The migration time of metformin was 8.4 min with 2.0 × 10–4, 1.35 × 10–4 and 15,600 as electrophoretic mobility (cm2V−1 s−1), electroosmotic mobility (cm2V−1 s−1) and the number of theoretical plates. These solid-phase micromembrane tip extraction and capillary electrophoretic methods were highly applicable to monitor metformin in the wastewater. The reported methods are efficient, reproducible and useful for the estimation of metformin in water and may be exploited for the analysis of the metformin water resource.

ACS Style

Z. A. Alothman; K. M. Alsheetan; M. M. Al-Anazy; M. Locatelli; I. Ali. Metformin residue analysis in water by MWCNTs-based solid-phase micromembrane tip extraction and capillary electrophoresis methods. International Journal of Environmental Science and Technology 2021, 1 -8.

AMA Style

Z. A. Alothman, K. M. Alsheetan, M. M. Al-Anazy, M. Locatelli, I. Ali. Metformin residue analysis in water by MWCNTs-based solid-phase micromembrane tip extraction and capillary electrophoresis methods. International Journal of Environmental Science and Technology. 2021; ():1-8.

Chicago/Turabian Style

Z. A. Alothman; K. M. Alsheetan; M. M. Al-Anazy; M. Locatelli; I. Ali. 2021. "Metformin residue analysis in water by MWCNTs-based solid-phase micromembrane tip extraction and capillary electrophoresis methods." International Journal of Environmental Science and Technology , no. : 1-8.

Journal article
Published: 05 March 2021 in Sustainability
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Poultry are one of the most vulnerable species of its kind once the temperature-humidity nexus is explored. This is so because the broilers lack sweat glands as compared to humans and undergo panting process to mitigate their latent heat (moisture produced in the body) in the air. As a result, moisture production inside poultry house needs to be maintained to avoid any serious health and welfare complications. Several strategies such as compressor-based air-conditioning systems have been implemented worldwide to attenuate the heat stress in poultry, but these are not economical. Therefore, this study focuses on the development of low-cost and environmentally friendly improved evaporative cooling systems (DEC, IEC, MEC) from the viewpoint of heat stress in poultry houses. Thermodynamic analysis of these systems was carried out for the climatic conditions of Multan, Pakistan. The results appreciably controlled the environmental conditions which showed that for the months of April, May, and June, the decrease in temperature by direct evaporative cooling (DEC), indirect evaporative cooling (IEC), and Maisotsenko-Cycle evaporative cooling (MEC) systems is 7–10 °C, 5–6.5 °C, and 9.5–12 °C, respectively. In case of July, August, and September, the decrease in temperature by DEC, IEC, and MEC systems is 5.5–7 °C, 3.5–4.5 °C, and 7–7.5 °C, respectively. In addition, drop in temperature-humidity index (THI) values by DEC, IEC, and MEC is 3.5–9 °C, 3–7 °C, and 5.5–10 °C, respectively for all months. Optimum temperature and relative humidity conditions are determined for poultry birds and thereby, systems’ performance is thermodynamically evaluated for poultry farms from the viewpoint of THI, temperature-humidity-velocity index (THVI), and thermal exposure time (ET). From the analysis, it is concluded that MEC system performed relatively better than others due to its ability of dew-point cooling and achieved THI threshold limit with reasonable temperature and humidity indexes.

ACS Style

Khawar Shahzad; Muhammad Sultan; Muhammad Bilal; Hadeed Ashraf; Muhammad Farooq; Takahiko Miyazaki; Uzair Sajjad; Imran Ali; Muhammad Hussain. Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan). Sustainability 2021, 13, 2836 .

AMA Style

Khawar Shahzad, Muhammad Sultan, Muhammad Bilal, Hadeed Ashraf, Muhammad Farooq, Takahiko Miyazaki, Uzair Sajjad, Imran Ali, Muhammad Hussain. Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan). Sustainability. 2021; 13 (5):2836.

Chicago/Turabian Style

Khawar Shahzad; Muhammad Sultan; Muhammad Bilal; Hadeed Ashraf; Muhammad Farooq; Takahiko Miyazaki; Uzair Sajjad; Imran Ali; Muhammad Hussain. 2021. "Experiments on Energy-Efficient Evaporative Cooling Systems for Poultry Farm Application in Multan (Pakistan)." Sustainability 13, no. 5: 2836.

Journal article
Published: 05 March 2021 in Radiation Physics and Chemistry
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Hydrogen generation by water splitting is reported in nano-ZrO2+H2Oabs. and nano-ZrO2+H2Oflu. systems using gamma radiation at different ZrO2 particle sizes (50–70 nm) and temperatures (300–673K). The rates of molecular hydrogen (H2) formation in radiolysis process were studied in radiation-chemical process using γ-quanta (60Co, D = 0.26–0.22 Gy/s, T = 300–673K, 50–70 nm) with mZrO2 = 3 × 10−2 g, 0.5 mL water. The energy yield of molecular hydrogen in radiation-heterogeneous processes in both nano-ZrO2+H2Oabs. and nano-ZrO2+H2Oflu. systems increased as the particle size of nano-ZrO2 decreased. The temperature stimulated the process of heterogeneous radiolysis during radiation-heterogeneous processes in n-ZrО2+Н2Оabs. system in the range of 300–673K. The molecular hydrogen (H2) yield increased linearly with temperature from 1.57 to 19.6 molecules/100 eV for d = 50–70 nm of particle size. The contributions of thermal and radiation-thermal processes to the accumulation of molecular hydrogen (H2) in the contact of n-ZrO2 with water was revealed [1.57–19.6 molecules/100eV(50–70 nm)] and the activation energy of the processes of molecular hydrogen formation was 21.2 kJ/mol (50–70 nm) radiation-thermal processes and 28.8 (50–70 nm) kJ/mol thermal processes. Briefly, molecular hydrogen contents in the nano-ZrO2+H2Oflu. system; where nano-ZrO2 was in a water-soluble state, and the yield of molecular hydrogen for gamma rays (molecule/100eV) absorbed by 100 eV absorption; was 6.0–6.5 (50–70 nm) times higher than the n-ZrO2+H2Oabs. system. These results are promising for molecular hydrogen generation by water splitting in near future.

ACS Style

Imran Ali; Gunel T. Imanova; Adil A. Garibov; Teymur N. Agayev; Sakin H. Jabarov; Abdulraheem Sa. Almalki; Abdullah Alsubaie. Gamma rays mediated water splitting on nano-ZrO2 surface: Kinetics of molecular hydrogen formation. Radiation Physics and Chemistry 2021, 183, 109431 .

AMA Style

Imran Ali, Gunel T. Imanova, Adil A. Garibov, Teymur N. Agayev, Sakin H. Jabarov, Abdulraheem Sa. Almalki, Abdullah Alsubaie. Gamma rays mediated water splitting on nano-ZrO2 surface: Kinetics of molecular hydrogen formation. Radiation Physics and Chemistry. 2021; 183 ():109431.

Chicago/Turabian Style

Imran Ali; Gunel T. Imanova; Adil A. Garibov; Teymur N. Agayev; Sakin H. Jabarov; Abdulraheem Sa. Almalki; Abdullah Alsubaie. 2021. "Gamma rays mediated water splitting on nano-ZrO2 surface: Kinetics of molecular hydrogen formation." Radiation Physics and Chemistry 183, no. : 109431.

Journal article
Published: 26 February 2021 in Journal of Molecular Liquids
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An inexpensive nano-structured modified adsorbent was prepared from natural montmorillonite. The optimum and significant parameters were Al3+:Co2+(11:2) with ion exchange, drying and calcination temperatures, respectively 75, 85 and 450 °C. The material was characterized by EDX, SEM, TEM, XRD and low-temperature nitrogen adsorption. The adsorbent was used for removing dioxidine antibiotics in water. The adsorption approximated by Langmuir, Freundlich, Tyomkin, Flory-Higgins, Dubinin-Radushkevich isotherms and kinetics pseudo-first-order, pseudo-second-order, Elovich-Chen-Clayton, Boyd, and Vebber-Morris models. The pseudo-second-order and Freundlich models most adequately describe the adsorption process. The maximum adsorption of dioxidine (96.5%) was achieved with 60 min of contact time, pH 7, dioxidine concentration 30 mg/L and adsorbent dose 5 g/L. The regeneration of the adsorbent was achieved by catalytic oxidative destruction of dioxidine with hydrogen peroxide. The reported adsorbent has shown an exceptional capability to remove dioxidine in water with the loss of about 8–10% adsorption capacity after running 5–6 times. The reported process may be assumed as an effective method for the removal of dioxidine from water with the economy due to the absence of wastewater during the regeneration of the adsorbent.

ACS Style

Imran Ali; Tatiana Kon'Kova; Vitalii Kasianov; Anton Rysev; Stefan Panglisch; X.Y. Mbianda; Mohamed A. Habila; Najla AlMasoud. Preparation and characterization of nano-structured modified montmorillonite for dioxidine antibacterial drug removal in water. Journal of Molecular Liquids 2021, 331, 115770 .

AMA Style

Imran Ali, Tatiana Kon'Kova, Vitalii Kasianov, Anton Rysev, Stefan Panglisch, X.Y. Mbianda, Mohamed A. Habila, Najla AlMasoud. Preparation and characterization of nano-structured modified montmorillonite for dioxidine antibacterial drug removal in water. Journal of Molecular Liquids. 2021; 331 ():115770.

Chicago/Turabian Style

Imran Ali; Tatiana Kon'Kova; Vitalii Kasianov; Anton Rysev; Stefan Panglisch; X.Y. Mbianda; Mohamed A. Habila; Najla AlMasoud. 2021. "Preparation and characterization of nano-structured modified montmorillonite for dioxidine antibacterial drug removal in water." Journal of Molecular Liquids 331, no. : 115770.

Journal article
Published: 12 February 2021 in Molecules
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The current research is focused on studying the biological efficacy of flexirubin, a pigment extracted from Chryseobacterium artocarpi CECT 8497.Different methods such as DPPH, H2O2, NO•, O2 •-, •OH, lipid peroxidation inhibition by FTC and TBA, ferric reducing and ferrous chelating activity were carried out to evaluate the antioxidant activity of flexirubin. Molecular docking was also carried out, seeking the molecular interactions of flexirubin and a standard antioxidant compound with SOD enzyme to figure out the possible flexirubin activity mechanism. The new findings revealed that the highest level of flexirubin exhibited similar antioxidant activity as that of the standard compound according to the H2O2, •OH, O2 •-, FTC and TBA methods. On the other hand, flexirubin at the highest level has shown lower antioxidant activity than the positive control according to the DPPH and NO. and even much lower when measured by the FRAP method. Molecular docking showed that the interaction of flexirubin was in the binding cavity of the SOD enzyme and did not affect its metal-binding site. These results revealed that flexirubin has antioxidant properties and can be a useful therapeutic compound in preventing or treating free radical-related diseases.

ACS Style

Abeer Mogadem; Mohamed Almamary; Naji Mahat; Khairunadwa Jemon; Wan Ahmad; Imran Ali. Antioxidant Activity Evaluation of Flexirubin-Type Pigment from Chryseobacterium artocarpi CECT 8497 and Related Docking Study. Molecules 2021, 26, 979 .

AMA Style

Abeer Mogadem, Mohamed Almamary, Naji Mahat, Khairunadwa Jemon, Wan Ahmad, Imran Ali. Antioxidant Activity Evaluation of Flexirubin-Type Pigment from Chryseobacterium artocarpi CECT 8497 and Related Docking Study. Molecules. 2021; 26 (4):979.

Chicago/Turabian Style

Abeer Mogadem; Mohamed Almamary; Naji Mahat; Khairunadwa Jemon; Wan Ahmad; Imran Ali. 2021. "Antioxidant Activity Evaluation of Flexirubin-Type Pigment from Chryseobacterium artocarpi CECT 8497 and Related Docking Study." Molecules 26, no. 4: 979.

Journal article
Published: 05 February 2021 in Journal of Molecular Liquids
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Nowadays, the removal of the rare-earth elements in water and hydrogeosystems is an urgent issue. Therefore, graphene oxide / polyhydroquinone nanocomposite was used to remove samarium ions (Sm3+) in aqueous solutions. The sorption and desorption of Sm3+ ions on the graphene oxide / polyhydroquinone nanocomposite from aqueous solutions are studied with contact time (15.0 min.), initial concentration (100.0 mg/L), the weight of sorbent (0.3 g/L), pH of a solution (6.0) and temp. (25C°). The rate constants of sorption, equilibrium sorption capacity, percentage sorption and desorption, entropy and enthalpy of Sm3+ extraction process are discussed. The analysis of the proceed mechanisms is conducted with the kinetic dependences and sorption isotherms, for which reason the empirical equations of pseudo-first and pseudo-second-order, Elovich and intraparticle diffusion, as well as the equations of Langmuir, Freundlich, Temkin, Dubinin-Radushkevich were used. It should be noted that the absorption of Sm3+ proceeded according to the mixed diffusion mechanism and is controlled by the interactions among the sorbent and the functional groups of the sorbent. According to Langmuir's model, the maximum sorption capacity of the developed sorbent was 357.14 mg g−1. Thus, the high efficiency of the developed sorbent for the purification and remediation of hydrogeosystems for samarium ions is useful. The reported method may be used for the removal of 360 million tons of wastewater with rare earth elements including samarium ions.

ACS Style

Imran Ali; Alexander V. Babkin; Irina V. Burakova; Alexander E. Burakov; Elena A. Neskoromnaya; Alexey G. Tkachev; Stefan Panglisch; Najla AlMasoud; Taghrid S. Alomar. Fast removal of samarium ions in water on highly efficient nanocomposite based graphene oxide modified with polyhydroquinone: Isotherms, kinetics, thermodynamics and desorption. Journal of Molecular Liquids 2021, 329, 115584 .

AMA Style

Imran Ali, Alexander V. Babkin, Irina V. Burakova, Alexander E. Burakov, Elena A. Neskoromnaya, Alexey G. Tkachev, Stefan Panglisch, Najla AlMasoud, Taghrid S. Alomar. Fast removal of samarium ions in water on highly efficient nanocomposite based graphene oxide modified with polyhydroquinone: Isotherms, kinetics, thermodynamics and desorption. Journal of Molecular Liquids. 2021; 329 ():115584.

Chicago/Turabian Style

Imran Ali; Alexander V. Babkin; Irina V. Burakova; Alexander E. Burakov; Elena A. Neskoromnaya; Alexey G. Tkachev; Stefan Panglisch; Najla AlMasoud; Taghrid S. Alomar. 2021. "Fast removal of samarium ions in water on highly efficient nanocomposite based graphene oxide modified with polyhydroquinone: Isotherms, kinetics, thermodynamics and desorption." Journal of Molecular Liquids 329, no. : 115584.

Correction
Published: 23 January 2021 in Polymer Bulletin
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ACS Style

Imran Ali; Tahani Saad Algarni; Alexandr Shchegolkov; Aleksei Shchegolkov; Sung-Hwan Jang; Evgeny Galunin; Fadey Komarov; Pavel Borovskikh; Gunel T. Imanova. Correction to: Temperature self-regulating flat electric heaters based on MWCNTs-modified polymers. Polymer Bulletin 2021, 1 -2.

AMA Style

Imran Ali, Tahani Saad Algarni, Alexandr Shchegolkov, Aleksei Shchegolkov, Sung-Hwan Jang, Evgeny Galunin, Fadey Komarov, Pavel Borovskikh, Gunel T. Imanova. Correction to: Temperature self-regulating flat electric heaters based on MWCNTs-modified polymers. Polymer Bulletin. 2021; ():1-2.

Chicago/Turabian Style

Imran Ali; Tahani Saad Algarni; Alexandr Shchegolkov; Aleksei Shchegolkov; Sung-Hwan Jang; Evgeny Galunin; Fadey Komarov; Pavel Borovskikh; Gunel T. Imanova. 2021. "Correction to: Temperature self-regulating flat electric heaters based on MWCNTs-modified polymers." Polymer Bulletin , no. : 1-2.

Journal article
Published: 16 January 2021 in Journal of Chromatography B
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The enantiomers of quinolone racemates were resolved using chiral crown ether within 8 min. Thermodynamics data and modeling results were used to determine chiral recognition mechanism. The column used was (+)-Crownpack column (250 mm × 4.6 mm, 5 µm) with three mobile phases I: ACN:Water (80:20) + 10 mM H2SO4 and 10 mM CH3COONH4, II: ACN:Water (80:20) + 20 mM perchloric acid and III: EtOH:Water (80:20) + 20 mM perchloric acid. The flow rate of the mobile phases was 1.0 mL/min with UV detection at different wavelengths. The ranges of retention (k), separation (α), and resolution (Rs) factors were 1.00–5.40, 1.37–2.00 and 1.50–3.30. The tailing factor was 1.o for all peaks with 900–2325 as the number of theoretical plates were 8.0–10.0 and 32.4–22.1 µg. The difference in enthalpy, entropy and free energy varied in the range of −0.350 to −0.024, 18.74 × 10−4 to 3.94 × 10−4 and −0.918 to −0.143, respectively. The thermodynamic and docking results showed chiral discrimination due to physical forces of amnio group cations penetration into the chiral cavity of the chiral selector following hydrogen bindings. The binding energy of S-enantiomers was higher than R-enantiomers; confirming stronger binding of S-enantiomers with CSP than R-enantiomers. The described chiral-HPLC method was used for the analysis of the quinolone enantiomers in urine samples and the results were quite satisfactory. Therefore, the reported method may be used for the enantiomeric separation of quinolone enantiomers in urine samples.

ACS Style

Zeid A. Alothman; Ahmad Yacine Badjah; Khalid M. Alsheetan; Mohd. Suhail; Imran Ali. Enantiomeric resolution of quinolones on crown ether CSP: Thermodynamics, chiral discrimination mechanism and application in biological samples. Journal of Chromatography B 2021, 1166, 122550 .

AMA Style

Zeid A. Alothman, Ahmad Yacine Badjah, Khalid M. Alsheetan, Mohd. Suhail, Imran Ali. Enantiomeric resolution of quinolones on crown ether CSP: Thermodynamics, chiral discrimination mechanism and application in biological samples. Journal of Chromatography B. 2021; 1166 ():122550.

Chicago/Turabian Style

Zeid A. Alothman; Ahmad Yacine Badjah; Khalid M. Alsheetan; Mohd. Suhail; Imran Ali. 2021. "Enantiomeric resolution of quinolones on crown ether CSP: Thermodynamics, chiral discrimination mechanism and application in biological samples." Journal of Chromatography B 1166, no. : 122550.

Journal article
Published: 05 January 2021 in Materials Chemistry and Physics
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The present paper describes the efficiency of the synthesis of multi-walled carbon nanotubes (MWCNTs), which is achieved through the implementation of a non-standard approach to the preparation of a Ni/MgO catalyst. The catalyst required for MWCNTs synthesis was obtained through chemical vapor deposition method. At the same time, the pre-catalyst was treated by electromagnetic field, ultrasound and microwave waves methods. It was proved that the treatment of the catalyst initial components solution with the electromagnetic field, ultrasound and microwaves contributes to an increase in the yield of the synthesized MWCNTs by 50, 30 and 70%. Besides, ultrasonic treatment may be used if MWCNTs of relatively low degree of a defect are required. The proposed approach is economically feasible since small additional energy costs lead to a more complete conversion of carbon-containing raw materials into the target product at the activation stage. The reported method may be used to prepare MWCNTs of different types economically; leading to its industrial application to produce different types of MWCNTs.

ACS Style

Imran Ali; Tahani Saad AlGarni; Elena Burakova; Alexey Tkachev; Evgeny Tugolukov; Tatyana Dyachkova; Artem Rukhov; Irina Gutnik; Evgeny Galunin. A new approach to the economic synthesis of multi-walled carbon nanotubes using a Ni/MgO catalyst. Materials Chemistry and Physics 2021, 261, 124234 .

AMA Style

Imran Ali, Tahani Saad AlGarni, Elena Burakova, Alexey Tkachev, Evgeny Tugolukov, Tatyana Dyachkova, Artem Rukhov, Irina Gutnik, Evgeny Galunin. A new approach to the economic synthesis of multi-walled carbon nanotubes using a Ni/MgO catalyst. Materials Chemistry and Physics. 2021; 261 ():124234.

Chicago/Turabian Style

Imran Ali; Tahani Saad AlGarni; Elena Burakova; Alexey Tkachev; Evgeny Tugolukov; Tatyana Dyachkova; Artem Rukhov; Irina Gutnik; Evgeny Galunin. 2021. "A new approach to the economic synthesis of multi-walled carbon nanotubes using a Ni/MgO catalyst." Materials Chemistry and Physics 261, no. : 124234.