This page has only limited features, please log in for full access.
Natural enzymes have been used in food industry, biosensing and pharmaceuticals due to their high catalytic activity. Their catalytic potential is governed by the environmental conditions leading to their denaturation, thus increasing operational cost. Nanoparticles (NPs) as enzyme mimic is a thrust area of research. Magnesium ferrite nanoparticles (MgFe2O4 NPs) have gained focus of researchers due to good catalytic activity, stability and magnetic properties. Their catalytic activity can be enhanced by surface coating with suitable surfactant. In this work, CTAB (cetyl trimethyl ammonium bromide) coated MgFe2O4 NPs were prepared and evaluated as peroxidase mimics. The XRD pattern of MgFe2O4 NPs confirmed single-phase formation of spinel structure with cubic geometry. FT-IR studies confirmed the presence of CTAB along with MgFe2O4 NPs. Surface area, Particle size and magnetic character of the NPs were evaluated by Brunauer Emmett Teller analysis, Transmission Electron Microscope and Vibrating Sample Magnetometer respectively. CTAB coated ferrite NPs showed increased surface area and decreased particle size as compared to pristine NPs. [email protected]2O4 in w/w ratio (1:1) showed best peroxidase like activity towards o-dianisidine dihydrochloride and was influenced by pH, temperature and substrate concentration in solution. The synthesized [email protected]2O4 (1:1) based system could be used for colorimetric detection of H2O2 in the linear range of 20–300 μM with a detection limit of 10 μM and also for the detection for glucose in the range of 10–1000 μM with a detection limit of 5 μM.
Ekjot Singh; Manpreet Kaur; Sucheta Sharma. Structural tuning of [email protected] nanocomposite as peroxidase mimic for H2O2 and glucose sensing. Materials Chemistry and Physics 2021, 271, 124851 .
AMA StyleEkjot Singh, Manpreet Kaur, Sucheta Sharma. Structural tuning of [email protected] nanocomposite as peroxidase mimic for H2O2 and glucose sensing. Materials Chemistry and Physics. 2021; 271 ():124851.
Chicago/Turabian StyleEkjot Singh; Manpreet Kaur; Sucheta Sharma. 2021. "Structural tuning of [email protected] nanocomposite as peroxidase mimic for H2O2 and glucose sensing." Materials Chemistry and Physics 271, no. : 124851.
This paper reports the successful synthesis of magnetic nanocomposite of calcium ferrite with nitrogen doped graphene oxide (CaFe2O4-NGO) for the effective removal of Pb(II) ions and photocatalytic degradation of congo red and p-nitrophenol. X-ray diffraction (XRD), Fourier transform infrared (FT-IR), transmission electron microscopy (TEM), and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) techniques confirmed the presence of NGO and CaFe2O4 in the nanocomposite. The Mössbauer studies depicted the presence of paramagnetic doublet and sextet due to presence of CaFe2O4 NPs in the nanocomposite. The higher BET surface area in case of CaFe2O4-NGO (52.86 m2/g) as compared to CaFe2O4 NPs (23.45 m2/g) was ascribed to the effective modulation of surface in the presence of NGO. Adsorption followed the Langmuir model with maximum adsorption capacity of 780.5 mg/g for Pb(II) ions. Photoluminescence spectrum of nanocomposite displayed four-fold decrease in the intensity, as compared to ferrite NPs, thus confirming its high light capturing potential and enhanced photocatalytic activity. The presence of NGO in nanocomposite offered an excellent visible light driven photocatalytic performance. The quenching experiments supported ●OH and O2●− radicals as the main reactive species involved in carrying out the catalytic system. The presence of Pb(II) had synergistic effect on photocatalytic degradation of pollutants. This study highlights the synthesis of CaFe2O4-NGO nanocomposite as an efficient adsorbent and photocatalyst for remediating pollutants.
Manmeet Kaur; Manpreet Kaur; Dhanwinder Singh; Aderbal Oliveira; Vijayendra Garg; Virender Sharma. Synthesis of CaFe2O4-NGO Nanocomposite for Effective Removal of Heavy Metal Ion and Photocatalytic Degradation of Organic Pollutants. Nanomaterials 2021, 11, 1471 .
AMA StyleManmeet Kaur, Manpreet Kaur, Dhanwinder Singh, Aderbal Oliveira, Vijayendra Garg, Virender Sharma. Synthesis of CaFe2O4-NGO Nanocomposite for Effective Removal of Heavy Metal Ion and Photocatalytic Degradation of Organic Pollutants. Nanomaterials. 2021; 11 (6):1471.
Chicago/Turabian StyleManmeet Kaur; Manpreet Kaur; Dhanwinder Singh; Aderbal Oliveira; Vijayendra Garg; Virender Sharma. 2021. "Synthesis of CaFe2O4-NGO Nanocomposite for Effective Removal of Heavy Metal Ion and Photocatalytic Degradation of Organic Pollutants." Nanomaterials 11, no. 6: 1471.
Nutrient use efficiency is reported as a strong indicator of the buildup soil nutrient status for nutritional security of crops through an integrated nutrient management approach under a rice-wheat system. The data revealed that integrated application of manures and fertilizers reported maximum organic carbon (0.39%) in the treatment receiving 100% of the recommended dose of fertilizers (RDF) + farmyard manure and lowering the pH to 6.39. The maximum available N (360.8 kg ha−1) was found in 100% RDF + press mud treatment; available P (66.30 kg ha−1) was found in 75% RDF + poultry manure; and available K, Zn, Cu, and Fe (226.3 kg ha−1 and 2.220, 0.732, and 36.87 mg kg−1, respectively) in 100% RDF + farmyard manure treatments. Similarly, total macro- and micronutrient content in soil increased with the addition of organic manures alone or in combination with chemical fertilizers. The highest agronomic efficiency and utilization efficiency of nitrogen (41.83 and 102.55 kg kg−1, respectively) and phosphorous (83.57 and 204.9 kg kg−1, respectively) were recorded in the treatment receiving 75% RDF + poultry manure. This study concluded that the integrated application of manures and chemical fertilizers is a must for improving soil nutrient status and nutrient use efficiency and ultimately enhances nutritional security under a rice-wheat system.
Mehakpreet Randhawa; Salwinder Dhaliwal; Vivek Sharma; Amardeep Toor; Sandeep Sharma; Manpreet Kaur; Gayatri Verma. Nutrient Use Efficiency as a Strong Indicator of Nutritional Security and Builders of Soil Nutrient Status through Integrated Nutrient Management Technology in a Rice-Wheat System in Northwestern India. Sustainability 2021, 13, 4551 .
AMA StyleMehakpreet Randhawa, Salwinder Dhaliwal, Vivek Sharma, Amardeep Toor, Sandeep Sharma, Manpreet Kaur, Gayatri Verma. Nutrient Use Efficiency as a Strong Indicator of Nutritional Security and Builders of Soil Nutrient Status through Integrated Nutrient Management Technology in a Rice-Wheat System in Northwestern India. Sustainability. 2021; 13 (8):4551.
Chicago/Turabian StyleMehakpreet Randhawa; Salwinder Dhaliwal; Vivek Sharma; Amardeep Toor; Sandeep Sharma; Manpreet Kaur; Gayatri Verma. 2021. "Nutrient Use Efficiency as a Strong Indicator of Nutritional Security and Builders of Soil Nutrient Status through Integrated Nutrient Management Technology in a Rice-Wheat System in Northwestern India." Sustainability 13, no. 8: 4551.
In this work, the adsorptive efficiency of core shell nanocomposites (NCs) of MgFe2O4 and SiO2 was comparatively studied for the removal of Pb(II) ions from aqueous solutions. Mesoporous SiO2 nanoparticles (NPs) were obtained from rice husk as source and MgFe2O4 NPs were synthesized via sol-gel method. [email protected] NC was synthesized using surfactant assisted sonication method and core shell reversal of the NC was achieved via direct precipitation method that lead to formation of [email protected] NC. The NCs were characterized employing FTIR, XRD, BET, TEM, VSM and SEM EDS analytical tools. [email protected] NC displayed higher BET surface area (459.1 m2g−1) than [email protected] (102.2 m2g−1) NC. The saturation magnetization (Ms) was 6.60 and 4.94 emug−1 for [email protected] and [email protected] respectively revealing their magnetic nature and the variation in the magnetic properties with the core-shell reversal. Adsorption process followed pseudo-second order kinetics. Thermodynamic studies confirmed the endothermic and spontaneous nature of the adsorption process. Langmuir and Freundlich isotherm models fitted more significantly than Temkin and D-R models. Values of qmax were in the range 26.67–48.08 mgg−1 and confirmed the trend of adsorption affinity i.e. MgFe2O4 > [email protected] > [email protected] >SiO2. Adsorptive efficiency of [email protected] NC and MgFe2O4 NPs was comparable but the NC had advantage of protected magnetic core. The results signified the importance of core-shell reversal in altering the adsorptive properties of MgFe2O4-SiO2 NCs.
Shruti Tiwari; Manpreet Kaur. Mechanistic insight into structural and adsorptive properties of core shell reversal nanocomposites of rice husk silica and magnesium ferrite. Advanced Powder Technology 2020, 31, 2315 -2326.
AMA StyleShruti Tiwari, Manpreet Kaur. Mechanistic insight into structural and adsorptive properties of core shell reversal nanocomposites of rice husk silica and magnesium ferrite. Advanced Powder Technology. 2020; 31 (6):2315-2326.
Chicago/Turabian StyleShruti Tiwari; Manpreet Kaur. 2020. "Mechanistic insight into structural and adsorptive properties of core shell reversal nanocomposites of rice husk silica and magnesium ferrite." Advanced Powder Technology 31, no. 6: 2315-2326.
Synthesis of core-shell nanocomposites is an important domain due to their applications as nanoadsorbents for heavy metal ions. In the present work, rattle type [email protected] core-shell nanospheres were synthesized by surfactant assisted direct precipitation of SiO2 on Fe2O3 nanoparticles. Whereas, fused magnetic nanospheres encapsulating mesoporous silica cores i.e. [email protected] were formed by sonication method. Different techniques viz. SEM-EDX, TEM, XRD, BET and VSM were used for the confirmation of structure, crystallinity, surface morphology and magnetic properties of nanospheres. Effect of pH, contact time, adsorbent dose and temperature on Cd(II) adsorption was evaluated. The experimental data was fitted using Langmuir, Freundlich and D-R isotherm models. Monolayer adsorption efficiency (qm) for [email protected] (769.0 mgg−1) was higher than [email protected] (370.0 mgg−1) nanospheres, signifying better adsorption of [email protected] The results confirmed that the reversal of core-shell can play an important role to effectively tune the properties of Fe2O3–SiO2 nanospheres for efficient removal of heavy metal ions.
Jaskirat Kaur; Manpreet Kaur. Comparative studies on structural, magnetic and adsorptive properties of fused [email protected] SiO2and rattle [email protected] with reversal of core-shell. Materials Chemistry and Physics 2019, 242, 122548 .
AMA StyleJaskirat Kaur, Manpreet Kaur. Comparative studies on structural, magnetic and adsorptive properties of fused [email protected] SiO2and rattle [email protected] with reversal of core-shell. Materials Chemistry and Physics. 2019; 242 ():122548.
Chicago/Turabian StyleJaskirat Kaur; Manpreet Kaur. 2019. "Comparative studies on structural, magnetic and adsorptive properties of fused [email protected] SiO2and rattle [email protected] with reversal of core-shell." Materials Chemistry and Physics 242, no. : 122548.
Mesoporous nanocomposite of MgFe2O4 nanoparticles (NPs) and graphene oxide (GO) was synthesized using facile sonication method. Its potential was tested for the removal of Ni (II) and Pb (II) ions from water. The 2:1 w/w ratio of MgFe2O4:GO was optimum for the maximum removal of metal ions. Nanocomposite was characterized employing XRD, FT-IR, VSM, SEM-EDX, XPS, TEM and BET analyses. It possessed higher surface area (63.0 m2 g−1) than pristine NPs. Batch experiments were performed to study the effect of process parameters viz. pH, dose, contact time, initial metal ion concentration, co-existing ions and temperature. Statistical parameters were also determined. Langmuir, Temkin and Freundlich models were followed in perfect way. Langmuir model showed the monolayer adsorption of metal ions onto the homogeneous surface of nanocomposite with maximum adsorption capacity of 100.0 mg g−1 and 143.0 mg g−1 for Ni (II) and Pb (II) ions respectively, which was higher than the same for MgFe2O4 NPs and GO. Kinetic studies demonstrated that the pseudo-second order model well described the adsorption process. The ΔS˚ and ΔG˚ values revealed spontaneous nature of adsorption process. Positive ΔH˚ values using MgFe2O4 NPs and nanocomposite indicated endothermic removal; whereas using GO the removal was exothermic. The observed trend for coexisting ions correlated with hydrated ion radii. Efficiency of the adsorbents was also tested for realistic nickel electroplating industrial effluent. Apart from the higher adsorption potential of nanofabricated composite, its magnetic properties are advantageous in utilizing metal loaded nanocomposite for adsorption-desorption cycles for reuse.
Navneet Kaur; Manpreet Kaur; Dhanwinder Singh. Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies. Environmental Pollution 2019, 253, 111 -119.
AMA StyleNavneet Kaur, Manpreet Kaur, Dhanwinder Singh. Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies. Environmental Pollution. 2019; 253 ():111-119.
Chicago/Turabian StyleNavneet Kaur; Manpreet Kaur; Dhanwinder Singh. 2019. "Fabrication of mesoporous nanocomposite of graphene oxide with magnesium ferrite for efficient sequestration of Ni (II) and Pb (II) ions: Adsorption, thermodynamic and kinetic studies." Environmental Pollution 253, no. : 111-119.
Ternary nanocomposite of MgFe2O4 and TiO2 nanoparticles (NPs) anchored on graphene oxide (MgFe2O4- [email protected]) was synthesized by facile ultrasonication method. Formation of the nanocomposite was confirmed by XRD and FT-IR studies. SEM-EDX and TEM clearly depicted the loading of the GO nanosheets with MgFe2O4 and TiO2 NPs. BET studies confirmed greater surface area of the nanocomposite as compared to pristine NPs and GO. Nanosheets of GO prevented the agglomeration of NPs. The band gap for nanocomposite (2.27eV) was lower than TiO2 and MgFe2O4 NPs. Synergistic adsorption and photodegradation potential of the nanocomposite was studied using methylene blue as a model compound. Batch process was employed for these studies and the results were compared with pristine GO,TiO2 and MgFe2O4 NPs. Adsorption data was best fitted into Langmuir isotherm model and followed the pseudo-second-order kinetics. Ternary nanocomposite displayed excellent synergistic adsorption and photocatalytic properties under both UV and visible light irradiation. Degradation products were analyzed by mass spectrometric analysis. Ternary MgFe2O4- [email protected] nanocomposite holds immense potential in the field of synergistic adsorption and degradation of organic contaminants.
Japandeep Kaur; Manpreet Kaur. Facile fabrication of ternary nanocomposite of MgFe2O4 [email protected] for synergistic adsorption and photocatalytic degradation studies. Ceramics International 2019, 45, 8646 -8659.
AMA StyleJapandeep Kaur, Manpreet Kaur. Facile fabrication of ternary nanocomposite of MgFe2O4 [email protected] for synergistic adsorption and photocatalytic degradation studies. Ceramics International. 2019; 45 (7):8646-8659.
Chicago/Turabian StyleJapandeep Kaur; Manpreet Kaur. 2019. "Facile fabrication of ternary nanocomposite of MgFe2O4 [email protected] for synergistic adsorption and photocatalytic degradation studies." Ceramics International 45, no. 7: 8646-8659.
In the present work, pristine and cetyl trimethyl ammonium bromide (CTAB)-coated ferric oxide nanoparticles \((\hbox {[email protected]}_{2}\hbox {O}_{3} \hbox { NPs})\) were synthesized and studied as enzyme mimics. The w/w ratio of \(\hbox {Fe}_{2}\hbox {O}_{3}\) to CTAB was varied as 1:1 and 1:2. Transmission electron microscopic analysis revealed that pristine NPs had an average size of 50 nm, whereas the presence of CTAB resulted in the formation of nanorods with length of 130 nm. BET studies confirmed enhancement of surface area on CTAB coating, which was maximum for w/w ratio 1:1. The synthesized pristine NPs and CTAB-coated NPs were evaluated for their peroxidase mimic activity using o-dianisidine dihydrochloride as substrate. Optimum pH, temperature, substrate and NPs concentration for the reaction were 1, \(25^{\circ }{\mathrm{C}}\), \(0.16~\hbox {mg}~\hbox {ml}^{-1}\) and \(1~\hbox {mg}~\hbox {ml}^{-1}\), respectively. Peroxidase mimic activity of \(\hbox {[email protected]}_{2}\hbox {O}_{3}\hbox { NPs}\) (w/w 1:1) was higher than that of pristine NPs. However, further increase in CTAB coating (w/w 1:2) resulted in lowering of peroxidase mimic activity. Kinetic analysis was carried out at optimized conditions; maximum velocity (\(V_{\mathrm{max}})\) and Michaelis constant (\(K_{\mathrm{m}})\) value of \(\hbox {[email protected]}_{2}\hbox {O}_{3}\hbox { NPs}\) at 1:1 w/w ratio were 7.69 mM and \(1.12~\upmu \hbox {mol}~\hbox {s}^{-1}\), respectively.
Dikshit Garg; Manpreet Kaur; Sucheta Sharma; Vibha Verma. Effect of CTAB coating on structural, magnetic and peroxidase mimic activity of ferric oxide nanoparticles. Bulletin of Materials Science 2018, 41, 134 .
AMA StyleDikshit Garg, Manpreet Kaur, Sucheta Sharma, Vibha Verma. Effect of CTAB coating on structural, magnetic and peroxidase mimic activity of ferric oxide nanoparticles. Bulletin of Materials Science. 2018; 41 (5):134.
Chicago/Turabian StyleDikshit Garg; Manpreet Kaur; Sucheta Sharma; Vibha Verma. 2018. "Effect of CTAB coating on structural, magnetic and peroxidase mimic activity of ferric oxide nanoparticles." Bulletin of Materials Science 41, no. 5: 134.
In the present work, nanocomposite of bentonite clay with \(\hbox {MgFe}_{2}\hbox {O}_{4}\) nanoparticles (NPs) was synthesized by sol–gel route. It was studied for the sequestration of Pb(II) and Ni(II) ions from the aqueous solution. The nanocomposite was analysed using X-ray diffraction, vibrating sample magnetometry, scanning electron microscopy equipped with energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy, transmission electron microscopy and Brunauer–Emmett–Teller (BET) as analytical tools. The lower value of saturation magnetization (\(M_{\mathrm{s}}\)) of nanocomposite (5.70 emu \(\hbox {g}^{-1}\)) as compared with pristine \(\hbox {MgFe}_{2}\hbox {O}_{4}\) NPs (12.32 emu \(\hbox {g}^{-1}\)) is due to the presence of non-magnetic bentonite clay. BET studies further revealed higher surface area for nanocomposite (\(75.43~\hbox {m}^{2}\) \(\hbox {g}^{-1}\)) than \(\hbox {MgFe}_{2}\hbox {O}_{4}\) NPs (\(62.51~\hbox {m}^{2}~\hbox {g}^{-1}\)). The presence of bentonite clay during sol–gel synthesis of \(\hbox {MgFe}_{2}\hbox {O}_{4}\) NPs prevented particle growth. The adsorption data were modelled using Temkin, Freundlich, Dubinin–Radushkevitch and Langmuir adsorption isotherms. Comparative evaluation of adsorption potential of nanocomposite for Pb(II) and Ni(II) ions confirmed higher affinity of Pb(II) ions (\(q_{\mathrm{max}} = 90.90~\hbox {mg g}^{-1}\)) towards the nanocomposite as compared with Ni(II) ions (\(q_{\mathrm{max}} = 76.92~\hbox {mg g}^{-1}\)). The results were explained on the basis of their hydration enthalpy. Thermodynamic analysis confirmed endothermic and spontaneous nature of adsorption process with \(\Delta H^\mathrm{o}\) values of 48.67 and \(21.54~\hbox {kJ}~\hbox {mol}^{-1}\) for Pb(II) and Ni(II) ions, respectively. Kinetic studies confirmed that a pseudo-second-order kinetic model was followed. The obtained results suggested that adsorption capacity of nanofabricated composite for Pb(II) and Ni(II) ions was higher than that of pristine \(\hbox {MgFe}_{2}\hbox {O}_{4}\) NPs and bentonite clay. The saturated adsorbent was magnetically retrievable and easily regenerated with 0.1 M HCl solutions. It can serve as a potential composite adsorbent for the remediation of heavy metal ions.
Manpreet Kaur; Manpreet Kaur Ubhi; Dhanwinder Singh. Magnetically retrievable nanocomposite of magnesium ferrite and bentonite clay for sequestration of Pb(II) and Ni(II) ions: a comparative study. Bulletin of Materials Science 2018, 41, 132 .
AMA StyleManpreet Kaur, Manpreet Kaur Ubhi, Dhanwinder Singh. Magnetically retrievable nanocomposite of magnesium ferrite and bentonite clay for sequestration of Pb(II) and Ni(II) ions: a comparative study. Bulletin of Materials Science. 2018; 41 (5):132.
Chicago/Turabian StyleManpreet Kaur; Manpreet Kaur Ubhi; Dhanwinder Singh. 2018. "Magnetically retrievable nanocomposite of magnesium ferrite and bentonite clay for sequestration of Pb(II) and Ni(II) ions: a comparative study." Bulletin of Materials Science 41, no. 5: 132.
Doping of nitrogen is a promising strategy to modulate chemical, electronic, and structural functionalities of graphene (G)and graphene quantum dots (GQDs) for their outstanding properties in energy and environmental applications.This paper reviews various synthesis approaches of nitrogen-doped graphene (N-G) and nitrogen-doped graphene quantum dots (N-GQDs).;Thermal, ultrasonic, solvothermal, hydrothermal, and electron-beam methods have been applied to synthesize N-G and N-GQDs.These nitrogen-doped carbon materials are characterized to obtain their structural configurations in order to achieve better performance in their applications compared to only either graphene or graphene quantum dots.Both N-G and N-GQDs may be converted into functional materials by integrating with other compounds such as metal oxides/nitrides, polymers, and semiconductors.These functional materials demonstrate superior performance over N-G and N-GQDs materials.Examples of applications of N-G and N-GQDs include supercapacitors, batteries, sensors, fuel cells, solar cells, and photocatalyst.
Manpreet Kaur; Manmeet Kaur; Virender K. Sharma. Nitrogen-doped graphene and graphene quantum dots: A review onsynthesis and applications in energy, sensors and environment. Advances in Colloid and Interface Science 2018, 259, 44 -64.
AMA StyleManpreet Kaur, Manmeet Kaur, Virender K. Sharma. Nitrogen-doped graphene and graphene quantum dots: A review onsynthesis and applications in energy, sensors and environment. Advances in Colloid and Interface Science. 2018; 259 ():44-64.
Chicago/Turabian StyleManpreet Kaur; Manmeet Kaur; Virender K. Sharma. 2018. "Nitrogen-doped graphene and graphene quantum dots: A review onsynthesis and applications in energy, sensors and environment." Advances in Colloid and Interface Science 259, no. : 44-64.
The present investigation reports the effects of different doses of sodium selenate and sodium selenite on its uptake, carbohydrate composition, and sucrose and starch metabolizing enzymes in flag leaf and developing grains of wheat grown under greenhouse conditions. Selenium (Se) concentration increased significantly in leaves and developing grains of Se-treated plants compared to control at different intervals post-anthesis. Total soluble sugars and sucrose concentrations in developing grains increased due to various Se treatments. Different selenite treatments increased sucrose synthase activity from 10 to 20 days post-anthesis and increased starch accumulation compared to control plants. Lower starch accumulation in selenate than control and selenite treatments was observed. The activities of α, β and total amylase, invertase and sucrose synthase increased whereas sucrose phosphate synthase declined. Results indicated that Se accumulation causes disturbances in carbohydrate metabolism that is dependent on Se concentration, form and the development stage of the plant.
Manpreet Kaur; Sucheta Sharma; Dhanwinder Singh. Influence of selenium on carbohydrate accumulation in developing wheat grains. Communications in Soil Science and Plant Analysis 2018, 49, 1650 -1659.
AMA StyleManpreet Kaur, Sucheta Sharma, Dhanwinder Singh. Influence of selenium on carbohydrate accumulation in developing wheat grains. Communications in Soil Science and Plant Analysis. 2018; 49 (13):1650-1659.
Chicago/Turabian StyleManpreet Kaur; Sucheta Sharma; Dhanwinder Singh. 2018. "Influence of selenium on carbohydrate accumulation in developing wheat grains." Communications in Soil Science and Plant Analysis 49, no. 13: 1650-1659.
Navneet Kaur; Manpreet Kaur. Envisioning the composition effect on structural, magnetic, thermal and optical properties of mesoporous MgFe2O4-GO nanocomposites. Ceramics International 2018, 44, 4158 -4168.
AMA StyleNavneet Kaur, Manpreet Kaur. Envisioning the composition effect on structural, magnetic, thermal and optical properties of mesoporous MgFe2O4-GO nanocomposites. Ceramics International. 2018; 44 (4):4158-4168.
Chicago/Turabian StyleNavneet Kaur; Manpreet Kaur. 2018. "Envisioning the composition effect on structural, magnetic, thermal and optical properties of mesoporous MgFe2O4-GO nanocomposites." Ceramics International 44, no. 4: 4158-4168.
Jaspreet Kaur Grewal; Manpreet Kaur. Effect of core-shell reversal on the structural, magnetic and adsorptive properties of Fe2O3-GO nanocomposites. Ceramics International 2017, 43, 16611 -16621.
AMA StyleJaspreet Kaur Grewal, Manpreet Kaur. Effect of core-shell reversal on the structural, magnetic and adsorptive properties of Fe2O3-GO nanocomposites. Ceramics International. 2017; 43 (18):16611-16621.
Chicago/Turabian StyleJaspreet Kaur Grewal; Manpreet Kaur. 2017. "Effect of core-shell reversal on the structural, magnetic and adsorptive properties of Fe2O3-GO nanocomposites." Ceramics International 43, no. 18: 16611-16621.
Paviter Singh; Manpreet Kaur; Gurpreet Kaur; Bikramjeet Singh; Kulwinder Singh; Harpreet Kaur; Mandeep Singh; Manjeet Kumar; Rajni Bala; Ramovatar Meena; Akshay Kumar. Effect of processing parameters on synthesis of nanostructured boron carbide. Advanced Materials Proceedings 2017, 2, 128 -131.
AMA StylePaviter Singh, Manpreet Kaur, Gurpreet Kaur, Bikramjeet Singh, Kulwinder Singh, Harpreet Kaur, Mandeep Singh, Manjeet Kumar, Rajni Bala, Ramovatar Meena, Akshay Kumar. Effect of processing parameters on synthesis of nanostructured boron carbide. Advanced Materials Proceedings. 2017; 2 (2):128-131.
Chicago/Turabian StylePaviter Singh; Manpreet Kaur; Gurpreet Kaur; Bikramjeet Singh; Kulwinder Singh; Harpreet Kaur; Mandeep Singh; Manjeet Kumar; Rajni Bala; Ramovatar Meena; Akshay Kumar. 2017. "Effect of processing parameters on synthesis of nanostructured boron carbide." Advanced Materials Proceedings 2, no. 2: 128-131.
Navneet Kaur; Manpreet Kaur. Adsorption behaviour of magnesium ferrite nanoparticles synthesized by co-precipitation and combustion methods. Agricultural Research Journal 2017, 54, 98 .
AMA StyleNavneet Kaur, Manpreet Kaur. Adsorption behaviour of magnesium ferrite nanoparticles synthesized by co-precipitation and combustion methods. Agricultural Research Journal. 2017; 54 (1):98.
Chicago/Turabian StyleNavneet Kaur; Manpreet Kaur. 2017. "Adsorption behaviour of magnesium ferrite nanoparticles synthesized by co-precipitation and combustion methods." Agricultural Research Journal 54, no. 1: 98.
Facile sonication method was used to immobilize ?-Fe2O3 nanoparticles (NPs) on graphene oxide (GO) to obtain environmentally stable ?-Fe2O3-GO nanocomposite (NC). Structure, surface morphology and composition of NC were thoroughly studied. M?ssbauer analysis confirmed the presence of maghemite (?-Fe2O3) as dominant phase of iron oxide. TEM images of NC revealed homogeneous distribution of ?-Fe2O3 NPs over the GO nanosheet. A comparative analysis of GO, ?-Fe2O3 NPs and NC for the removal of Ni(II) ions from water was carried out by batch method and adsorption kinetics, thermodynamics and isotherms were also studied. The adsorption data fitted better to Langmuir and Freundlich adsorption isotherms as compared to Dubinin Radushkevich (D-R) and Temkin adsorption isotherms. NC showed higher qmax value (615.0mg/g) as compared to the pristine GO (403.7mg/g) and ?-Fe2O3 NPs (572.4mg/g). The adsorption kinetics followed pseudo-second-order model. NC displayed greater affinity for Ni(II) ions in comparison to pristine GO and ?-Fe2O3 NPs. The results suggested that the synthesized ?-Fe2O3-GO nanocomposite can be used as a promising novel material for the removal of Ni(II) from water due to its higher adsorption capacity, stability, convenient magnetic separation and regeneration.
Ubhi Manpreet Kaur; Manpreet Kaur; Dhanwinder Singh; Jean-Marc Greneche. Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - kinetics, isotherm and thermodynamics studies. Processing and Application of Ceramics 2017, 11, 247 -257.
AMA StyleUbhi Manpreet Kaur, Manpreet Kaur, Dhanwinder Singh, Jean-Marc Greneche. Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - kinetics, isotherm and thermodynamics studies. Processing and Application of Ceramics. 2017; 11 (4):247-257.
Chicago/Turabian StyleUbhi Manpreet Kaur; Manpreet Kaur; Dhanwinder Singh; Jean-Marc Greneche. 2017. "Nanocomposite of γ-Fe2O3 immobilized on graphene oxide for remediation of Ni(II) ions - kinetics, isotherm and thermodynamics studies." Processing and Application of Ceramics 11, no. 4: 247-257.
The study delineates the investigation to determine the adsorption and desorption behaviour of Pretilachlor in three soils of Punjab with varying physicochemical characteristics using batch equilibration techniques. Kinetics of adsorption followed a pseudo-second-order model (R2 > 0.99) and adsorption–desorption data fitted well to the Freundlich equation for the three soils. L-type isotherms were obtained for the adsorption process, which indicated high affinity between Pretilachlor and adsorption sites. The magnitude of logKFads values for the three soils ranged from 0.887–1.226 μg1−1/n g−1 mL1/n and the order of adsorption was clay loam > sandy loam > loamy sand. Desorption of Pretilachlor was concentration dependent and in three desorption cycles ranged from 5.04 to 56.03 % in loamy sand, 3.14 to 23.12 % in sandy loam and 1.63 to 18.64 % in clay loam soil indicative of difficulty in the release of strongly adsorbed Pretilachlor. The removal of organic matter by hydrogen peroxide (H2O2) oxidation increased the adsorption of Pretilachlor in three Punjab soils. Pretilachlor desorption was hysteretic in the original as well as H2O2-treated soils. It could therefore be concluded that the adsorption was controlled by clay minerals and desorption of Pretilachlor in soils was controlled by the organic matter.
Paawan Kaur; Pervinder Kaur; Kuldip Singh; Manpreet Kaur. Adsorption and Desorption Characteristics of Pretilachlor in Three Soils of Punjab. Water, Air, & Soil Pollution 2016, 227, 376 .
AMA StylePaawan Kaur, Pervinder Kaur, Kuldip Singh, Manpreet Kaur. Adsorption and Desorption Characteristics of Pretilachlor in Three Soils of Punjab. Water, Air, & Soil Pollution. 2016; 227 (10):376.
Chicago/Turabian StylePaawan Kaur; Pervinder Kaur; Kuldip Singh; Manpreet Kaur. 2016. "Adsorption and Desorption Characteristics of Pretilachlor in Three Soils of Punjab." Water, Air, & Soil Pollution 227, no. 10: 376.
Ferrite materials are being widely used in magnetic, electronic and microwave devices. They have high resistivity and low eddy current losses which makes them better choice over metals. Apart from their promising magnetic properties, ferrites have now been explored for their adsorptive and catalytic properties. This chapter presents applications of ferrite nanoparticles in the diverse fields from magnetic devices to the adsorbents for remediation of heavy metals and organic contaminants. Their role in facile synthesis of organic compounds as catalysts where they can replace conventional processes is also discussed. Environmental remediation is the most recently explored area. Magnetic separation of nanoparticles facilitates their reuse age. The works reported on lab scale can be explored at large scale for environmental remediation.
Manpreet Kaur; Navneet Kaur. Ferrites: Synthesis and Applications for Environmental Remediation. ACS Symposium Series 2016, 113 -136.
AMA StyleManpreet Kaur, Navneet Kaur. Ferrites: Synthesis and Applications for Environmental Remediation. ACS Symposium Series. 2016; ():113-136.
Chicago/Turabian StyleManpreet Kaur; Navneet Kaur. 2016. "Ferrites: Synthesis and Applications for Environmental Remediation." ACS Symposium Series , no. : 113-136.
Divya Utreja; Bentham Science Publisher Vibha; Sarbjit Singh; Manpreet Kaur. Schiff Bases and their Metal Complexes as Anti-Cancer Agents: A Review. Current Bioactive Compounds 2015, 11, 215 -230.
AMA StyleDivya Utreja, Bentham Science Publisher Vibha, Sarbjit Singh, Manpreet Kaur. Schiff Bases and their Metal Complexes as Anti-Cancer Agents: A Review. Current Bioactive Compounds. 2015; 11 (4):215-230.
Chicago/Turabian StyleDivya Utreja; Bentham Science Publisher Vibha; Sarbjit Singh; Manpreet Kaur. 2015. "Schiff Bases and their Metal Complexes as Anti-Cancer Agents: A Review." Current Bioactive Compounds 11, no. 4: 215-230.
Nano ferrite bentonite clay composite (NFBC) of magnesium ferrite nanoparticles (MgFe2O4 NPs) and bentonite is synthesized by sol–gel method and characterized by employing transmission electron microscope (TEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), FT-IR spectroscopy and BET analysis. NFBC displayed higher porosity and surface area as compared to the pristine MgFe2O4 NPs. We explored the effectiveness of NFBC for the removal of Cr (VI) from aqueous solution and the results were compared with the pristine MgFe2O4 NPs. Adsorption data was modelled using Langmuir, Freudlich and Tempkin isotherms. NFBC displayed higher Qm value along with advantageous magnetic properties of MgFe2O4 NPs. Cr (VI) loaded NFBC could be easily regenerated by washing with 0.1 N NaOH and magnetically separated from the solution. Moreover the adsorption effectiveness of 100% was maintained after five adsorption–desorption cycles.
Manpreet Kaur; Mandeep Singh; Siddharth Shankar Mukhopadhyay; Dhanwinder Singh; Munish Gupta. Structural, magnetic and adsorptive properties of clay ferrite nanocomposite and its use for effective removal of Cr (VI) from water. Journal of Alloys and Compounds 2015, 653, 202 -211.
AMA StyleManpreet Kaur, Mandeep Singh, Siddharth Shankar Mukhopadhyay, Dhanwinder Singh, Munish Gupta. Structural, magnetic and adsorptive properties of clay ferrite nanocomposite and its use for effective removal of Cr (VI) from water. Journal of Alloys and Compounds. 2015; 653 ():202-211.
Chicago/Turabian StyleManpreet Kaur; Mandeep Singh; Siddharth Shankar Mukhopadhyay; Dhanwinder Singh; Munish Gupta. 2015. "Structural, magnetic and adsorptive properties of clay ferrite nanocomposite and its use for effective removal of Cr (VI) from water." Journal of Alloys and Compounds 653, no. : 202-211.