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The innovation and development of water purification methods have been at the center of extensive research for several decades. Many nanoparticles are frequently seen in industrial waste water. In this research, zinc oxide nanoparticles (ZnO) were synthesized following an autocombustion method with and without honey capping. Structural crystallinity and bonding structure were examined via X-ray diffraction (XRD) analysis and Fourier transform infrared (FTIR) spectroscopy. Optical behavior was analyzed using ultraviolet–visible (UV–Vis) spectroscopy and photoluminescence (PL). Size estimation and surface morphology were studied using scanning electron microscopy (SEM), while energy-dispersive spectroscopy (EDS) was performed to analyze the sample purity and elemental composition. The photocatalytic degradation of methylene blue (MB) by ZnO was assessed as it is an efficient water treatment process with high potential. The biological activity of ZnO nanoparticles was also investigated in terms of antibacterial and antifungal activities against different bacterial and fungal species. Surprisingly, the as-synthesized ZnO nanoparticles were found to be substantially bioactive compared to conventional drugs. Honey-mediated nanoparticles displayed 86% dye degradation efficiency, and that of bare ZnO was 60%. Therefore, the involvement of honey in the synthesis of ZnO nanoparticles has great potential due to its dual applicability in both biological and environmental remediation processes.
M. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings 2021, 11, 1046 .
AMA StyleM. Sharmila, R. Jothi Mani, Abdul Kader, Awais Ahmad, Gaber E. Eldesoky, Adel E. M. Yahya, Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings. 2021; 11 (9):1046.
Chicago/Turabian StyleM. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. 2021. "Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey." Coatings 11, no. 9: 1046.
Lithium manganese phosphate (LiMnPO4) and a series of chromium-doped lithium manganese phosphate with variation in Cr content LiCrxMn1−xPO4 (x = 0.03, 0.06, 0.1) were prepared via conventional sol-gel method and their dielectric properties have been explored as a function of frequency. The structure and morphology were investigated by X-ray diffraction technique (XRD), Fourier transformed infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. The influence of frequency upon electrical conductivity as well as di-electric properties of the as-synthesized LiCrxMn1−xPO4 materials have been analyzed by dielectric parameters and AC conductivity using impedance analyzer. It was observed that dielectric constant increased with frequency at lower chromium concentration while at higher chromium contents, the dielectric constant was decreased with increasing frequency. Hence, the composition with highest Cr content (ie, x = 0.1) is proved as best material for various applications owing to its lowest AC-conductivity and lowest dielectric loss. Therefore, it is revealed that chromium doping is quite advantageous for performance of LiMnPO4 in device applications as Cr doped LiMnPO4 unveiled improved dielectric loss.
Sidra Bibi; Azim Khan; Safia Khan; Awais Ahmad; Syed Sakhawat Shah; Mohammad Siddiq; Azhar Iqbal; Abdullah A. Al‐Kahtani. Synthesis of Cr doped LiMnPO 4 cathode materials and investigation of their dielectric properties. International Journal of Energy Research 2021, 1 .
AMA StyleSidra Bibi, Azim Khan, Safia Khan, Awais Ahmad, Syed Sakhawat Shah, Mohammad Siddiq, Azhar Iqbal, Abdullah A. Al‐Kahtani. Synthesis of Cr doped LiMnPO 4 cathode materials and investigation of their dielectric properties. International Journal of Energy Research. 2021; ():1.
Chicago/Turabian StyleSidra Bibi; Azim Khan; Safia Khan; Awais Ahmad; Syed Sakhawat Shah; Mohammad Siddiq; Azhar Iqbal; Abdullah A. Al‐Kahtani. 2021. "Synthesis of Cr doped LiMnPO 4 cathode materials and investigation of their dielectric properties." International Journal of Energy Research , no. : 1.
The development of cost-effective and ecofriendly approaches toward water purification and antibacterial activity is a hot research topic in this era. Purposely, strontium-doped zinc selenide (Sr-doped ZnSe) nanoparticles, with different molar ratios of Sr2+ cations (0.01, 0.05, and 0.1), were prepared via the co-precipitation method, in which sodium borohydride (NaBH4) and 2-mercaptoethanol were employed as reducing and stabilizing agents, respectively. The ZnSe cubic structure expanded by Sr2+ cations was indicated by X-ray diffraction (XRD) analysis. The absorption of the chemical compounds on the surface was observed via Fourier transform infrared (FT-IR) spectroscopy. The optical orientation was measured by ultraviolet–visible diffused reflectance spectroscopy (UV-DRS) analysis. The surface area, morphology, and elemental purity were analyzed using field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and energy-dispersive spectroscopy (EDS) analyses. The oxidation state and valency of the synthesized nanoparticles were analyzed using X-ray photoelectron spectroscopy (XPS). Sr-doped ZnSe nanoparticles were investigated for photocatalytic degradation of methyl orange (MO), and their antibacterial potential was investigated against different bacterial strains. The antibacterial activity examined against Staphylococcus aureus and Escherichia coli implied the excellent biological activity of the nanoparticles. Moreover, the Sr-doped ZnSe nanoparticles were evaluated by the successful degradation of methyl orange under visible light irradiation. Therefore, Sr-doped ZnSe nanoparticles have tremendous potential in biological and water remediation fields.
V. Beena; S. L. Rayar; S. Ajitha; Awais Ahmad; Munirah D. Albaqami; Fatmah Ahmed Ali Alsabar; Mika Sillanpää. Synthesis and Characterization of Sr-Doped ZnSe Nanoparticles for Catalytic and Biological Activities. Water 2021, 13, 2189 .
AMA StyleV. Beena, S. L. Rayar, S. Ajitha, Awais Ahmad, Munirah D. Albaqami, Fatmah Ahmed Ali Alsabar, Mika Sillanpää. Synthesis and Characterization of Sr-Doped ZnSe Nanoparticles for Catalytic and Biological Activities. Water. 2021; 13 (16):2189.
Chicago/Turabian StyleV. Beena; S. L. Rayar; S. Ajitha; Awais Ahmad; Munirah D. Albaqami; Fatmah Ahmed Ali Alsabar; Mika Sillanpää. 2021. "Synthesis and Characterization of Sr-Doped ZnSe Nanoparticles for Catalytic and Biological Activities." Water 13, no. 16: 2189.
Two-dimensional (2D) nanoflakes of vanadium pentoxide (V2O5) are directly developed on the titanium (Ti) substrate ([email protected]) as an innovative electrode for pseudocapacitor. The designed [email protected] electrode offers impressive capacitance of 1520 Fg-1 at 1.5 Ag-1 and superb long-term reliability with a 99% retention over 12000 cycles at 20 Ag-1 based on the merits of highly exposed active sites and improved electrical conductivity.
Muhammad Sufyan Javed; Tayyba Najim; Iftikhar Hussain; Saima Batool; Muhammd Idrees; Ayaz Mehmood; Mohammed Imran; Mohammad A. Assiri; Awais Ahmad; Syed Shoaib Ahmad Shah. 2D V2O5 nanoflakes as a binder-free electrode material for high-performance pseudocapacitor. Ceramics International 2021, 1 .
AMA StyleMuhammad Sufyan Javed, Tayyba Najim, Iftikhar Hussain, Saima Batool, Muhammd Idrees, Ayaz Mehmood, Mohammed Imran, Mohammad A. Assiri, Awais Ahmad, Syed Shoaib Ahmad Shah. 2D V2O5 nanoflakes as a binder-free electrode material for high-performance pseudocapacitor. Ceramics International. 2021; ():1.
Chicago/Turabian StyleMuhammad Sufyan Javed; Tayyba Najim; Iftikhar Hussain; Saima Batool; Muhammd Idrees; Ayaz Mehmood; Mohammed Imran; Mohammad A. Assiri; Awais Ahmad; Syed Shoaib Ahmad Shah. 2021. "2D V2O5 nanoflakes as a binder-free electrode material for high-performance pseudocapacitor." Ceramics International , no. : 1.
Reduced graphene oxide based iron oxide modified titania (rGO-Fe3O4/TiO2) was developed as a low-cost, stable, and reproducible photocatalyst, synthesized by conventional hydrothermal route. Structural and morphological features were investigated by X-Ray diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS). The incorporation of rGO-Fe3O4 to TiO2 shifted the light absorption of TiO2 from ultraviolet (UV) to visible region. The band gap energy of the synthesized photocatalyst rGO-Fe3O4/TiO2 reduced to 2.6 eV as compared to TiO2 (3.2 eV) which shifted the light absorption into visible region in order to utilize the solar energy effectually. The as-proposed rGO-Fe3O4/TiO2 and TiO2 photocatalysts were used for the photo-degradation of malachite green (MG) and methylene blue (MB) degradation. The as-prepared photocatalyst rGO-Fe3O4/TiO2 exhibited commendable photocatalytic efficiency (99%) comparative to pure TiO2 (67%) under visible light in 55 min for MG degradation. The active species were also identified using various scavengers by trapping holes and radicals generated during the photocatalytic degradation process. Subsequently, such photo-degradation output inferred that this ternary nanocomposite partakes a great potential for visible light driven MG and MB photocatalytic degradation.
Sidra Bibi; Awais Ahmad; Mohsin Ali Raza Anjum; Abdul Haleem; Muhammad Siddiq; Syed Sakhawat Shah; Abdullah Al Kahtani. Photocatalytic degradation of malachite green and methylene blue over reduced graphene oxide (rGO) based metal oxides (rGO-Fe3O4/TiO2) nanocomposite under UV-visible light irradiation. Journal of Environmental Chemical Engineering 2021, 9, 105580 .
AMA StyleSidra Bibi, Awais Ahmad, Mohsin Ali Raza Anjum, Abdul Haleem, Muhammad Siddiq, Syed Sakhawat Shah, Abdullah Al Kahtani. Photocatalytic degradation of malachite green and methylene blue over reduced graphene oxide (rGO) based metal oxides (rGO-Fe3O4/TiO2) nanocomposite under UV-visible light irradiation. Journal of Environmental Chemical Engineering. 2021; 9 (4):105580.
Chicago/Turabian StyleSidra Bibi; Awais Ahmad; Mohsin Ali Raza Anjum; Abdul Haleem; Muhammad Siddiq; Syed Sakhawat Shah; Abdullah Al Kahtani. 2021. "Photocatalytic degradation of malachite green and methylene blue over reduced graphene oxide (rGO) based metal oxides (rGO-Fe3O4/TiO2) nanocomposite under UV-visible light irradiation." Journal of Environmental Chemical Engineering 9, no. 4: 105580.
This work intended to enhance the unique and outstanding properties of lanthanum by synthesizing its nanocomposite. A lanthanum-based nanocomposite was prepared by a simple and cost-effective “co-precipitation” method. Lanthanum nitrate (La (NO3)3) and zinc nitrate (Zn (NO3)2) were used as precursors. The lanthanum/zinc oxide nano composite formed was then calcined at 450 °C for 4 h in order to obtain a fine powder with size in the nano range of 1–100 nm. Characterization of the prepared catalyst was done by ultraviolet/visible spectroscopy, Fourier transform infrared spectroscopy, and photoluminescence. Crystallinity and morphology were found by X-ray diffraction and scanning electron microscopy. The synthesized nanocomposite material was also tested for heterogeneous catalytic applications of 4-nitrophenol (4-NP) reduction into 4-aminophenol (4-AP). It was found to be successful in complete reduction of 4-NP with enhanced catalytic performance.
Ikram Ahmad; Muhammad Jamal; Miara Iftikhar; Awais Ahmad; Shahid Hussain; Humaira Asghar; Muhammad Saeed; Ammar Yousaf; Rama Karri; Nada Al-Kadhi; Mohamed Ouladsmane; Ayman Ghfar; Safia Khan. Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol. Coatings 2021, 11, 537 .
AMA StyleIkram Ahmad, Muhammad Jamal, Miara Iftikhar, Awais Ahmad, Shahid Hussain, Humaira Asghar, Muhammad Saeed, Ammar Yousaf, Rama Karri, Nada Al-Kadhi, Mohamed Ouladsmane, Ayman Ghfar, Safia Khan. Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol. Coatings. 2021; 11 (5):537.
Chicago/Turabian StyleIkram Ahmad; Muhammad Jamal; Miara Iftikhar; Awais Ahmad; Shahid Hussain; Humaira Asghar; Muhammad Saeed; Ammar Yousaf; Rama Karri; Nada Al-Kadhi; Mohamed Ouladsmane; Ayman Ghfar; Safia Khan. 2021. "Lanthanum-Zinc Binary Oxide Nanocomposite with Promising Heterogeneous Catalysis Performance for the Active Conversion of 4-Nitrophenol into 4-Aminophenol." Coatings 11, no. 5: 537.
Lead (Pb) is one of the most toxic elements on earth. The main origins of Pb pollution are automobiles, paint and electroplating industries. Pb-induced stress has very toxic effects on plant growth and biomass. The concentration of reactive oxygen species (ROS) in plant cells significantly increases under Pb stress, which interrupts the biochemical cycles in cells and leads to cell death. Therefore, it is essential to clean up the Pb-polluted soils. Among all techniques that are used to clean soil that is metal-contaminated, the best technique is phytoremediation. The present study intends to determine the role of citric acid (CA) and glutathione (GSH) in the phytoremediation of Pb by using castor bean plants. Plant biomass was significantly reduced due to Pb stress. Lead toxicity was also harmful to the photosynthetic pigments and antioxidant enzymes activities. In reverse, the content of malondialdehyde (MDA), H2O2 concentration and electrolyte leakage (EL) were increased under Pb stress. The combined application of GSH and CA enhanced photosynthetic pigments, antioxidant enzyme activities and plant biomass and minimized MDA, H2O2 and EL under Pb stress. The amount of Pb in roots and leaves remarkably increased by the joint application of CA and GSH. The combined application of CA and GSH (5 mM + 25 mM, respectively) was proven to be beneficial compared to the control. From the present results, we can conclude that the combined application of CA and GSH promoted the phytoremediation of Pb and helped the host plant to combat Pb toxicity.
Fanrong Zeng; Zahid Mallhi; Naeem Khan; Muhammad Rizwan; Shafaqat Ali; Awais Ahmad; Afzal Hussain; Abdulaziz Alsahli; Mohammed Alyemeni. Combined Citric Acid and Glutathione Augments Lead (Pb) Stress Tolerance and Phytoremediation of Castorbean through Antioxidant Machinery and Pb Uptake. Sustainability 2021, 13, 4073 .
AMA StyleFanrong Zeng, Zahid Mallhi, Naeem Khan, Muhammad Rizwan, Shafaqat Ali, Awais Ahmad, Afzal Hussain, Abdulaziz Alsahli, Mohammed Alyemeni. Combined Citric Acid and Glutathione Augments Lead (Pb) Stress Tolerance and Phytoremediation of Castorbean through Antioxidant Machinery and Pb Uptake. Sustainability. 2021; 13 (7):4073.
Chicago/Turabian StyleFanrong Zeng; Zahid Mallhi; Naeem Khan; Muhammad Rizwan; Shafaqat Ali; Awais Ahmad; Afzal Hussain; Abdulaziz Alsahli; Mohammed Alyemeni. 2021. "Combined Citric Acid and Glutathione Augments Lead (Pb) Stress Tolerance and Phytoremediation of Castorbean through Antioxidant Machinery and Pb Uptake." Sustainability 13, no. 7: 4073.
Improvement in chitosan (CS) was achieved by solution casting using cellulose nanowhiskers (CNWs) and multiwall carbon nanotubes (MWCNTs) to synthesize CS/CNW functionalized/treated MWCNTs (CS/CNWs/f-MWCNTs) and CS/CNW untreated MWCNTs (CS/CNWs/Un-MWCNTs) nanocomposite films. A comparison between effects of f-MWCNTs and Un-MWCNTs on CS/CNWs matrix have been studied with respect to change in their physical and mechanical properties. The surface morphology, chemical composition, mechanical properties and temperature decomposition of CS/CNWs/f-MWCNTs and CS/CNW/Un-MWCNTs nanocomposite films were characterized by Energy Dispersion Spectroscopy (EDS), Field Emission Scanning Electron Microscope (FESEM), Fourier-Transform Infrared Spectroscopy (FTIR) and Thermogravimetric Analysis (TGA). FESEM has shown that f-MWCNTs and Un-MWCNTs were well dispersed in CS/CNWs structure. Decrease in film ductility was observed with addition of Un-MWCNTs or f-MWCNTs. Moreover, Tensile strength (TS) and Young’s modulus (YM) were increased with f-MWCNTs and seemed to be decreased in case of Un-MWCNTs. However, a decrease in elongation at break (EB) has experienced with addition of f-MWCNTs and Un-MWCNTs. Furthermore, thermal stability of chitosan composites presented a delay or prevention from degradation of CS/CNWs due to the strong interactions. Such modification in chitosan can improve its mechanical and surface properties. Hence, chitosan derived composites could achieve more applicability in packaging, medicinal and environmental applications.
Chin Zhen Thou; Fahad Saleem Ahmed Khan; N.M. Mubarak; Awais Ahmad; Mohammad Khalid; Priyanka Jagadish; Rashmi Walvekar; E.C. Abdullah; Safia Khan; Mariam Khan; Shahid Hussain; Ikram Ahmad; Tahani Saad Algarni. Surface charge on chitosan/cellulose nanowhiskers composite via functionalized and untreated carbon nanotube. Arabian Journal of Chemistry 2021, 14, 103022 .
AMA StyleChin Zhen Thou, Fahad Saleem Ahmed Khan, N.M. Mubarak, Awais Ahmad, Mohammad Khalid, Priyanka Jagadish, Rashmi Walvekar, E.C. Abdullah, Safia Khan, Mariam Khan, Shahid Hussain, Ikram Ahmad, Tahani Saad Algarni. Surface charge on chitosan/cellulose nanowhiskers composite via functionalized and untreated carbon nanotube. Arabian Journal of Chemistry. 2021; 14 (3):103022.
Chicago/Turabian StyleChin Zhen Thou; Fahad Saleem Ahmed Khan; N.M. Mubarak; Awais Ahmad; Mohammad Khalid; Priyanka Jagadish; Rashmi Walvekar; E.C. Abdullah; Safia Khan; Mariam Khan; Shahid Hussain; Ikram Ahmad; Tahani Saad Algarni. 2021. "Surface charge on chitosan/cellulose nanowhiskers composite via functionalized and untreated carbon nanotube." Arabian Journal of Chemistry 14, no. 3: 103022.
Hybrid composites have great potential for specific strength and specific stiffness, effective in aerospace industries, submarines, and light-weight automotives. The mechanical strength and adhesiveness of hybrid laminates can be enhanced by effective use of matrix materials in different ratios of epoxy resin and epoxy hardener. Gentle use of resin and hardener in the fabrication of hybrid composites can alter tensile modulus, the bonding strength between matrix and fabric. Spectacular progress has been achieved by the selection of appropriate amounts of resin and hardener in the hybridization of composite laminate. Hybridization was made by Kevlar inorganic/organic fabrics and glass fabrics stacked with epoxy matrix material. To achieve the combination of mechanical properties and bonding strength, transparent epoxy resin and hardener of commercial grades mixed in various ratios are incorporated as matrix material to fabricate laminate. Three different sheets, named A (3:2), B (4:1), and C (2:3), were embedded by the hand layup method to prepare a hybrid composite. Experimental tests, according to ASTM 3039, were performed to determine the tensile mechanical properties. Peel tests, according to ASTM 6862-11, were performed to investigate the interlaminar strength between Kevlar and glass layers. Shore A and Shore C hardness durometers were used to find out the hardness of the specimens at different spots using the ASTM D-2240 standard. Finally, physical testing, such as density and then water absorption, was carried out using the ASTM D-570 standard to check the swelling ratio of the different specimens. The results obtained highlight that the specimen of the glass/Kevlar hybrid embedded in the ratio 3:2 in lamination has the best mechanical properties (tensile strength and hardness) and the lowest swelling ratio, while the material system in the ratio 4:1 shows the best interlaminar properties and adhesion capabilities.
Sajid Hussian Siyal; Subhan Ali Jogi; Salman Muhammadi; Zubair Ahmed Laghari; Sadam Ali Khichi; Khalida Naseem; Tahani Saad Algarni; Asma Alothman; Shahid Hussain; Muhammad Javed. Mechanical Characteristics and Adhesion of Glass-Kevlar Hybrid Composites by Applying Different Ratios of Epoxy in Lamination. Coatings 2021, 11, 94 .
AMA StyleSajid Hussian Siyal, Subhan Ali Jogi, Salman Muhammadi, Zubair Ahmed Laghari, Sadam Ali Khichi, Khalida Naseem, Tahani Saad Algarni, Asma Alothman, Shahid Hussain, Muhammad Javed. Mechanical Characteristics and Adhesion of Glass-Kevlar Hybrid Composites by Applying Different Ratios of Epoxy in Lamination. Coatings. 2021; 11 (1):94.
Chicago/Turabian StyleSajid Hussian Siyal; Subhan Ali Jogi; Salman Muhammadi; Zubair Ahmed Laghari; Sadam Ali Khichi; Khalida Naseem; Tahani Saad Algarni; Asma Alothman; Shahid Hussain; Muhammad Javed. 2021. "Mechanical Characteristics and Adhesion of Glass-Kevlar Hybrid Composites by Applying Different Ratios of Epoxy in Lamination." Coatings 11, no. 1: 94.
Sodium alginate (Na-Alg) is water-soluble, neutral, and linear polysaccharide. It is the derivative of alginic acid which comprises 1,4-β-d-mannuronic (M) and α-l-guluronic (G) acids and has the chemical formula (NaC6H7O6). It shows water-soluble, non-toxic, biocompatible, biodegradable, and non-immunogenic properties. It had been used for various biomedical applications, among which the most promising are drug delivery, gene delivery, wound dressing, and wound healing. For different biomedical applications, it is used in different forms with the help of new techniques. That is the reason it had been blended with different polymers. In this review article, we present a comprehensive overview of the combinations of sodium alginate with natural and synthetic polymers and their biomedical applications involving delivery systems. All the scientific/technical issues have been addressed, and we have highlighted the recent advancements.
Awais Ahmad; N.M. Mubarak; Fakiha Tul Jannat; Tayyaba Ashfaq; Carlo Santulli; Muhammad Rizwan; Agnieszka Najda; May Bin-Jumah; Mohamed M. Abdel-Daim; Shahid Hussain; Shafaqat Ali. A Critical Review on the Synthesis of Natural Sodium Alginate Based Composite Materials: An Innovative Biological Polymer for Biomedical Delivery Applications. Processes 2021, 9, 137 .
AMA StyleAwais Ahmad, N.M. Mubarak, Fakiha Tul Jannat, Tayyaba Ashfaq, Carlo Santulli, Muhammad Rizwan, Agnieszka Najda, May Bin-Jumah, Mohamed M. Abdel-Daim, Shahid Hussain, Shafaqat Ali. A Critical Review on the Synthesis of Natural Sodium Alginate Based Composite Materials: An Innovative Biological Polymer for Biomedical Delivery Applications. Processes. 2021; 9 (1):137.
Chicago/Turabian StyleAwais Ahmad; N.M. Mubarak; Fakiha Tul Jannat; Tayyaba Ashfaq; Carlo Santulli; Muhammad Rizwan; Agnieszka Najda; May Bin-Jumah; Mohamed M. Abdel-Daim; Shahid Hussain; Shafaqat Ali. 2021. "A Critical Review on the Synthesis of Natural Sodium Alginate Based Composite Materials: An Innovative Biological Polymer for Biomedical Delivery Applications." Processes 9, no. 1: 137.
Here, we have manufactured extremely porous photoelectrodes comprised of ZnO/TiO2 by adding lignocellulose (LC) fibers extracted from the self-growing plant (Lily) on fluorine-doped tin oxide (FTO) substrate using doctor blade technique for dye-sensitized solar cells (DSSCs) uses and first-principle calculations were performed for electronic band structures and density of state (DOS). Density functional theory (DFT) results revealed a high conductivity and narrow electronic bandgap after doping with LC. Experimental results showed the effect of the addition of LC in ZnO (ZnO + LC) and TiO2 (TiO2 + LC) on the structure, morphology, and power conversion efficiency (PCE) was studied in detail using powder X-ray diffraction, scanning electron microscope, UV–visible spectroscopy, and solar simulant. The addition of LC in ZnO/TiO2 increases the porosity and surface area for higher dye loading and light-harvesting while decreasing the backward scattering of electrons. These developments result in a 38% increase in PCE of (ZnO + LC) as related to the ZnO based DSSC and a 104% increase in the case of (TiO2 + LC) based DSSC. In this work, we express that the development of highly porous metal oxide nano-composites by mixing LC fibers which may solve the electrolyte leakage issue and enhance the porosity of the photoelectrodes and thus enhance the PCE of DSSCs.
Muhammad Saleem; Muhammad Irfan; Sobia Tabassum; Munirah D Albaqami; Muhammad Sufyan Javed; Shahid Hussain; Muhammad Pervaiz; Ikram Ahmad; Awais Ahmad; Muhammad Zuber. Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells. Arabian Journal of Chemistry 2020, 14, 102937 .
AMA StyleMuhammad Saleem, Muhammad Irfan, Sobia Tabassum, Munirah D Albaqami, Muhammad Sufyan Javed, Shahid Hussain, Muhammad Pervaiz, Ikram Ahmad, Awais Ahmad, Muhammad Zuber. Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells. Arabian Journal of Chemistry. 2020; 14 (2):102937.
Chicago/Turabian StyleMuhammad Saleem; Muhammad Irfan; Sobia Tabassum; Munirah D Albaqami; Muhammad Sufyan Javed; Shahid Hussain; Muhammad Pervaiz; Ikram Ahmad; Awais Ahmad; Muhammad Zuber. 2020. "Experimental and theoretical study of highly porous lignocellulose assisted metal oxide photoelectrodes for dye-sensitized solar cells." Arabian Journal of Chemistry 14, no. 2: 102937.
This study focusses on the synthesis of silver nanoparticles (Ag-nPs) by citrus fruit (Citrus paradisi) peel extract as reductant while using AgNO3 salt as source of silver ions. Successful preparation of biogenic CAg-nPs catalyst was confirmed by turning the colorless reaction mixture to light brown. The appearance of surface Plasmon resonance (SPR) band in UV-Vis spectra further assured the successful fabrication of nPs. Different techniques such as FTIR, TGA and DLS were adopted to characterize the CAg-nPs. CAg-nPs particles were found to excellent catalysts for reduction of Congo red (CR), methylene blue (MB), malachite green (MG), Rhodamine B (RhB) and 4-nitrophenol (4-NP). Reduction of CR was also performed by varying the contents of NaBH4, CR and catalyst to optimize the catalyst activity. The pseudo first order kinetic model was used to explore the value of rate constants for reduction reactions. Results also interpret that the catalytic reduction of dyes followed the Langmuir–Hinshelwood (LH) mechanism. According to the LH mechanism, the CAg-nPs role in catalysis was explained by way of electrons transfer from donor (NaBH4) to acceptor (dyes). Due to reusability and green synthesis of the CAg-nPs catalyst, it can be a promising candidate for the treatment of water sources contaminated with toxic dyes.
Khalida Naseem; Muhammad Zia Ur Rehman; Awais Ahmad; Deepak Dubal; Tahani Saad Algarni. Plant Extract Induced Biogenic Preparation of Silver Nanoparticles and Their Potential as Catalyst for Degradation of Toxic Dyes. Coatings 2020, 10, 1235 .
AMA StyleKhalida Naseem, Muhammad Zia Ur Rehman, Awais Ahmad, Deepak Dubal, Tahani Saad Algarni. Plant Extract Induced Biogenic Preparation of Silver Nanoparticles and Their Potential as Catalyst for Degradation of Toxic Dyes. Coatings. 2020; 10 (12):1235.
Chicago/Turabian StyleKhalida Naseem; Muhammad Zia Ur Rehman; Awais Ahmad; Deepak Dubal; Tahani Saad Algarni. 2020. "Plant Extract Induced Biogenic Preparation of Silver Nanoparticles and Their Potential as Catalyst for Degradation of Toxic Dyes." Coatings 10, no. 12: 1235.
Herin, we prepared silver NPs using jasmine flower extract. The green synthesis process reports a eco-friendly, nontoxic, cost-effective and simple approach to the synthesis of metal and metal oxide nanoparticles. Extract of jasmine flower acts as capping as well as stabilizing agent. The average crystalline size of the XRD pattern is estimated to be 40 nm. FT-IR (Fourier Transform Infrared) spectra confirm the existence of Ag NPs. The UV-Visible spectrum exhibits an absorption peak of between 380 and 440 nm. Structural analysis for silver nanofibers reveals with SEM and TEM technique. The antimicrobial activity of silver NPs was tested for both grams positive and negative bacteria by Agar well diffusion method. Methylene blue is used as a pollutant dye. Silver nanoparticles result in a maximum degradation efficiency of 78% at the end of 120 minutes.
M. Aravind; Awais Ahmad; Ikram Ahmad; M. Amalanathan; Khalida Naseem; Sony M. Michael Mary; C. Parvathiraja; Shahid Hussain; Tahani Saad Algarni; Muhammad Pervaiz; Muhammad Zuber. Critical green routing synthesis of silver NPs using jasmine flower extract for biological activities and photocatalytical degradation of methylene blue. Journal of Environmental Chemical Engineering 2020, 9, 104877 .
AMA StyleM. Aravind, Awais Ahmad, Ikram Ahmad, M. Amalanathan, Khalida Naseem, Sony M. Michael Mary, C. Parvathiraja, Shahid Hussain, Tahani Saad Algarni, Muhammad Pervaiz, Muhammad Zuber. Critical green routing synthesis of silver NPs using jasmine flower extract for biological activities and photocatalytical degradation of methylene blue. Journal of Environmental Chemical Engineering. 2020; 9 (1):104877.
Chicago/Turabian StyleM. Aravind; Awais Ahmad; Ikram Ahmad; M. Amalanathan; Khalida Naseem; Sony M. Michael Mary; C. Parvathiraja; Shahid Hussain; Tahani Saad Algarni; Muhammad Pervaiz; Muhammad Zuber. 2020. "Critical green routing synthesis of silver NPs using jasmine flower extract for biological activities and photocatalytical degradation of methylene blue." Journal of Environmental Chemical Engineering 9, no. 1: 104877.
This review depicts the exposure of chitin and chitosan base multifunctional nanomaterial composites for promising applications in field of biomedical science structure, synthesis as well as potential application from a colossal angle. We elaborated critically each of the chitin and chitosan base nanomaterial with its potential application toward biomedical science. For different biomedical applications it use in form of hydrogels, microsphere, nanoparticles, aerogels, microsphere and in form of scaffold. Due to this it had been blended with different polymer such as starch, cellulose, alginate, lipid, hyaluronic acid, polyvinyl alcohol and caboxymethyl cellulose. In this review article, a comprehensive overview of combination of chitin and chitosan base nanomaterial with natural as well as synthetic polymers and their biomedical applications in biomedical field involving drug delivery system All the technical scientific issues have been addressed; highlighting the recent advancements.
Awais Ahmad; N.M Mubharak; Khalida Naseem; Hina Tabassum; Muhammad Rizwan; Agnieszka Najda; M. Kashif; May Bin-Jumah; Afzal Hussain; Asma Shaheen; Mohamed M. Abdel-Daim; Shafaqat Ali; Shahid Hussain. Recent advancement and development of chitin and chitosan-based nanocomposite for drug delivery: Critical approach to clinical research. Arabian Journal of Chemistry 2020, 13, 8935 -8964.
AMA StyleAwais Ahmad, N.M Mubharak, Khalida Naseem, Hina Tabassum, Muhammad Rizwan, Agnieszka Najda, M. Kashif, May Bin-Jumah, Afzal Hussain, Asma Shaheen, Mohamed M. Abdel-Daim, Shafaqat Ali, Shahid Hussain. Recent advancement and development of chitin and chitosan-based nanocomposite for drug delivery: Critical approach to clinical research. Arabian Journal of Chemistry. 2020; 13 (12):8935-8964.
Chicago/Turabian StyleAwais Ahmad; N.M Mubharak; Khalida Naseem; Hina Tabassum; Muhammad Rizwan; Agnieszka Najda; M. Kashif; May Bin-Jumah; Afzal Hussain; Asma Shaheen; Mohamed M. Abdel-Daim; Shafaqat Ali; Shahid Hussain. 2020. "Recent advancement and development of chitin and chitosan-based nanocomposite for drug delivery: Critical approach to clinical research." Arabian Journal of Chemistry 13, no. 12: 8935-8964.
Egg shell-based activated carbon was successfully synthesized by the simple chemical activation process. Orthophosphoric acid and sodium hydroxide used as an activation agent. XRD pattern reveals the hexagonal structure of activated carbon. The functional group presents in activated carbon was identified using FT-IR spectroscopy. SEM images show irregular shapes of carbon. The photocatalytic performance of investigated activated carbon by illuminating methylene blue dye under UV-Visible irradiations. Photocatalytic activity of activated carbon results maximum degradation efficiency of 83%. Adsorption efficiency have been increased with respect of time for degradation of dye. Free radicals and superoxide’s play a significant role is decolourization of methylene blue. Photocatalytic activity of activated carbon synthesized by Orthophosphoric acid results shows the high degradation efficiency when compared to NaOH.
Awais Ahmad; D. Jini; M. Aravind; C. Parvathiraja; Rabia Ali; Maryam Zaheer Kiyani; Asma Alothman. A novel study on synthesis of egg shell based activated carbon for degradation of methylene blue via photocatalysis. Arabian Journal of Chemistry 2020, 13, 8717 -8722.
AMA StyleAwais Ahmad, D. Jini, M. Aravind, C. Parvathiraja, Rabia Ali, Maryam Zaheer Kiyani, Asma Alothman. A novel study on synthesis of egg shell based activated carbon for degradation of methylene blue via photocatalysis. Arabian Journal of Chemistry. 2020; 13 (12):8717-8722.
Chicago/Turabian StyleAwais Ahmad; D. Jini; M. Aravind; C. Parvathiraja; Rabia Ali; Maryam Zaheer Kiyani; Asma Alothman. 2020. "A novel study on synthesis of egg shell based activated carbon for degradation of methylene blue via photocatalysis." Arabian Journal of Chemistry 13, no. 12: 8717-8722.
The wettability of the metal/SiC system is not always excellent, resulting in the limitation of the widespread use of SiC ceramic. In this paper, three implantation doses of Si ions (5 × 1015, 1 × 1016, 5 × 1016 ions/cm2) were implanted into the 6H-SiC substrate. The wetting of Cu-(2.5, 5, 7.5, 10) Sn alloys on the pristine and Si-SiC were studied by the sessile drop technique, and the interfacial chemical reaction of Cu-Sn/SiC wetting couples was investigated and discussed. The Si ion can markedly enhance the wetting of Cu-Sn on 6H-SiC substrate, and those of the corresponding contact angles (θ) are raised partly, with the Si ion dose increasing due to the weakening interfacial chemical reactions among four Cu-Sn alloys and 6H-SiC ceramics. Moreover, the θ of Cu-Sn on (Si-)SiC substrate is first decreased and then increased from ~62° to ~39°, and ~70° and ~140°, with the Sn concentration increasing from 2.5%, 5% and 7.5% to 10%, which is linked to the reactivity of Cu-Sn alloys and SiC ceramic and the variation of liquid-vapor surface energy. Particularly, only a continuous graphite layer is formed at the interface of the Cu-10Sn/Si-SiC system, resulting in a higher contact angle (>40°).
Xiang Zhao Zhang; Pu Hao Xu; Gui Wu Liu; Awais Ahmad; Xiao Hui Chen; Ya Long Zhu; Asma Alothman; Shahid Hussain; Guan Jun Qiao. Synthesis, Characterization and Wettability of Cu-Sn Alloy on the Si-Implanted 6H-SiC. Coatings 2020, 10, 906 .
AMA StyleXiang Zhao Zhang, Pu Hao Xu, Gui Wu Liu, Awais Ahmad, Xiao Hui Chen, Ya Long Zhu, Asma Alothman, Shahid Hussain, Guan Jun Qiao. Synthesis, Characterization and Wettability of Cu-Sn Alloy on the Si-Implanted 6H-SiC. Coatings. 2020; 10 (9):906.
Chicago/Turabian StyleXiang Zhao Zhang; Pu Hao Xu; Gui Wu Liu; Awais Ahmad; Xiao Hui Chen; Ya Long Zhu; Asma Alothman; Shahid Hussain; Guan Jun Qiao. 2020. "Synthesis, Characterization and Wettability of Cu-Sn Alloy on the Si-Implanted 6H-SiC." Coatings 10, no. 9: 906.
Chromium (Cr) is recognized as a toxic metal that has detrimental effects on living organisms; notably, it is discharged into soil by various industries as a result of anthropogenic activities. Microbe-assisted phytoremediation is one of the most emergent and environmentally friendly methods used for the detoxification of pollutants. In this study, the alleviative role of Staphylococcus aureus strain K1 was evaluated in wheat (Triticum aestivum L.) under Cr stress. For this, various Cr concentrations (0, 25, 50 and 100 mg·kg−1) with and without peat-moss-based bacterial inoculum were applied in the soil. Results depicted that Cr stress reduced the plants’ growth by causing oxidative stress in the absence of S. aureus K1 inoculation. However, the application of S. aureus K1 regulated the plants’ growth and antioxidant enzymatic activities by reducing oxidative stress and Cr toxicity through conversion of Cr6+ to Cr3+. The Cr6+ uptake by wheat was significantly reduced in the S. aureus K1 inoculated plants. It can be concluded that the application of S. aureus K1 could be an effective approach to alleviate the Cr toxicity in wheat and probably in other cereals grown under Cr stress.
Fanrong Zeng; Munazza Zahoor; Muhammad Waseem; Alia Anayat; Muhammad Rizwan; Awais Ahmad; Tahira Yasmeen; Shafaqat Ali; Mohamed A. El-Sheikh; Mohammed Nasser Alyemeni; Leonard Wijaya. Influence of Metal-Resistant Staphylococcus aureus Strain K1 on the Alleviation of Chromium Stress in Wheat. Agronomy 2020, 10, 1354 .
AMA StyleFanrong Zeng, Munazza Zahoor, Muhammad Waseem, Alia Anayat, Muhammad Rizwan, Awais Ahmad, Tahira Yasmeen, Shafaqat Ali, Mohamed A. El-Sheikh, Mohammed Nasser Alyemeni, Leonard Wijaya. Influence of Metal-Resistant Staphylococcus aureus Strain K1 on the Alleviation of Chromium Stress in Wheat. Agronomy. 2020; 10 (9):1354.
Chicago/Turabian StyleFanrong Zeng; Munazza Zahoor; Muhammad Waseem; Alia Anayat; Muhammad Rizwan; Awais Ahmad; Tahira Yasmeen; Shafaqat Ali; Mohamed A. El-Sheikh; Mohammed Nasser Alyemeni; Leonard Wijaya. 2020. "Influence of Metal-Resistant Staphylococcus aureus Strain K1 on the Alleviation of Chromium Stress in Wheat." Agronomy 10, no. 9: 1354.
Tannery wastewater mainly comes from leather industries. It has high organic load, high salinity, and many other pollutants, including chromium (Cr). Tannery wastewater is generally used for crop irrigation in some areas of Pakistan and worldwide, due to the low availability of good quality of irrigation water. As tannery wastewater has many nutrients in it, its lower concentration benefits the plant growth, but at a higher concentration, it damages the plants. Chromium in tannery wastewater accumulates in plants, and causes stress at physiological and biochemical levels. In recent times, the role of micronutrient-amino acid chelated compounds has been found to be helpful in reducing abiotic stress in plants. In our present study, we used lysine chelated zinc (Zn-lys) as foliar application on maize (Zea mays L.), growing in different concentrations of tannery wastewater. Zinc (Zn) is required by plants for growth, and lysine is an essential amino acid. Maize plants were grown in tannery wastewater in four concentrations (0, 25%, 50%, and 100%) and Zn-lys was applied as a foliar spray in three concentrations (0 mM, 12.5 mM, and 25 mM) during plant growth. Plants were cautiously harvested right after 6 weeks of treatment. Foliar spray of Zn-lys on maize increased the biomass and improved the plant growth. Photosynthetic pigments such as total chlorophyll, chlorophyll a, chlorophyll b and contents of carotenoids also increased with Zn-lys application. In contrast to control plants, the hydrogen peroxide (H2O2) contents were increased up to 12%, 50%, and 68% in leaves, as well as 16%, 51% and 89% in roots at 25%, 50%, and 100% tannery water application, respectively, without Zn-lys treatments. Zn-lys significantly reduced the damages caused by oxidative stress in maize plant by decreasing the overproduction of H2O2 and malondialdehyde (MDA) in maize that were produced, due to the application of high amount of tannery wastewater alone. The total free amino acids and soluble protein decreased by 10%, 31% and 64% and 18%, 61% and 122% at 25%, 50% and 100% tannery water treatment. Zn-lys application increased the amino acids production and antioxidant activities in maize plants. Zn contents increased, and Cr contents decreased, in different parts of plants with Zn-lys application. Overall, a high concentration of tannery wastewater adversely affected the plant growth, but the supplementation of Zn-lys assertively affected the plant growth and enhanced the nutritional quality, by enhancing Zn and decreasing Cr levels in plants simultaneously irrigated with tannery wastewater.
Rehan Ahmad; Wajid Ishaque; Mumtaz Khan; Umair Ashraf; Muhammad Atif Riaz; Said Ghulam; Awais Ahmad; Muhammad Rizwan; Shafaqat Ali; Saad Alkahtani; Mohamed M. Abdel-Daim. Relief Role of Lysine Chelated Zinc (Zn) on 6-Week-Old Maize Plants under Tannery Wastewater Irrigation Stress. International Journal of Environmental Research and Public Health 2020, 17, 5161 .
AMA StyleRehan Ahmad, Wajid Ishaque, Mumtaz Khan, Umair Ashraf, Muhammad Atif Riaz, Said Ghulam, Awais Ahmad, Muhammad Rizwan, Shafaqat Ali, Saad Alkahtani, Mohamed M. Abdel-Daim. Relief Role of Lysine Chelated Zinc (Zn) on 6-Week-Old Maize Plants under Tannery Wastewater Irrigation Stress. International Journal of Environmental Research and Public Health. 2020; 17 (14):5161.
Chicago/Turabian StyleRehan Ahmad; Wajid Ishaque; Mumtaz Khan; Umair Ashraf; Muhammad Atif Riaz; Said Ghulam; Awais Ahmad; Muhammad Rizwan; Shafaqat Ali; Saad Alkahtani; Mohamed M. Abdel-Daim. 2020. "Relief Role of Lysine Chelated Zinc (Zn) on 6-Week-Old Maize Plants under Tannery Wastewater Irrigation Stress." International Journal of Environmental Research and Public Health 17, no. 14: 5161.
Cosmetic industry has become a much famous and interesting area of research toward gaining the outcomes and acquiring the challenges of personal care. Because of this growing interest as well as owing to their capability and effectively, they have found extensive applications for a number of skin problems like wrinkles of skin, photo-aging, damage of hair, and hyperpigmentation. It is well known that nanotechnology is being considered as an outstanding emerging technology capable of altering the world. It has greatly influenced the cosmetic world by carrying out extensive and outstanding modifications and, in the present times, has a key role in cosmetic industry for the production of cosmetic products. Cosmetic products manufactured using nanotechnology have not only increased bioavailability, but also have the ability to retain their original state for a longer period time because of gaining stability and strength.
Ikram Ahmad; Awais Ahmad; Shafia Iftekhar; Sadia Khalid; Akasha Aftab; Syed Abbas Raza. Role of Nanoparticle in Cosmetics Industries. Biological Synthesis of Nanoparticles and Their Applications 2019, 173 -204.
AMA StyleIkram Ahmad, Awais Ahmad, Shafia Iftekhar, Sadia Khalid, Akasha Aftab, Syed Abbas Raza. Role of Nanoparticle in Cosmetics Industries. Biological Synthesis of Nanoparticles and Their Applications. 2019; ():173-204.
Chicago/Turabian StyleIkram Ahmad; Awais Ahmad; Shafia Iftekhar; Sadia Khalid; Akasha Aftab; Syed Abbas Raza. 2019. "Role of Nanoparticle in Cosmetics Industries." Biological Synthesis of Nanoparticles and Their Applications , no. : 173-204.
Amino acid derivative Schiff base was synthesized by reaction of leucine with salicyldehyde in basic medium. The Schiff base was used as a ligand which was reacted with Co, Mn, Cu and Cd metals in order to form the stable complexes. The synthesized ligand and metals complexes were characterized by using different spectroscopic tools i.e. FT-IR, Mass spectrometry and NMR. The percentages of different elements present in ligand molecule and complexes was confirmed by Elemental analyzer. All compounds including ligand and complexes were also engaged with different bacterial (Escheria coli, Staphylococcus aureus, Bacillus subbtilis) and fungal strains (Alternaria alternate, Aspergillus flavus and Aspergillus niger) in order to check the inhibitory action of titled compounds. The results showed that the metal complexes have greater antimicrobial activities than ligand.
Muhammad Pervaiz; Ikram Ahmad; Muhammad Yousaf; Shamaila Kirn; Asima Munawar; Zohaib Saeed; Ahmad Adnan; Tahsin Gulzar; Tahseen Kamal; Awais Ahmad; Ayoub Rashid. Synthesis, spectral and antimicrobial studies of amino acid derivative Schiff base metal (Co, Mn, Cu, and Cd) complexes. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 2018, 206, 642 -649.
AMA StyleMuhammad Pervaiz, Ikram Ahmad, Muhammad Yousaf, Shamaila Kirn, Asima Munawar, Zohaib Saeed, Ahmad Adnan, Tahsin Gulzar, Tahseen Kamal, Awais Ahmad, Ayoub Rashid. Synthesis, spectral and antimicrobial studies of amino acid derivative Schiff base metal (Co, Mn, Cu, and Cd) complexes. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 2018; 206 ():642-649.
Chicago/Turabian StyleMuhammad Pervaiz; Ikram Ahmad; Muhammad Yousaf; Shamaila Kirn; Asima Munawar; Zohaib Saeed; Ahmad Adnan; Tahsin Gulzar; Tahseen Kamal; Awais Ahmad; Ayoub Rashid. 2018. "Synthesis, spectral and antimicrobial studies of amino acid derivative Schiff base metal (Co, Mn, Cu, and Cd) complexes." Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 206, no. : 642-649.