An innovative approach for green synthesis of iron oxide nanoparticles: Characterization and its photocatalytic activity

Arularasu, M.V.; Devakumar, J.; Rajendran, T.V.

doi:10.1016/j.poly.2018.09.036

Cited by 95 publications

(25 citation statements)

References 46 publications

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“…Arularasu et al 2018 studied the production of Fe 3 O 4 NPs using aqueous Kappaphycus alvarezii (red seaweed). The degradation of textile waste by catalytic activity was effective using NPs formed by a reduction reaction and also exhibited antibacterial activity 16 . Lakshmi Pravallika et al, 2019 synthesized iron oxide nanoparticles using ethanolic extract of Centella asiatica (CAIONPs) by reducing ferrous and ferric chlorides which were administered to Swiss albino mice with a dosage of 2000 mg/kg body weight.…”

Section: Introductionmentioning

confidence: 99%

One-pot green synthesis of iron oxide nanoparticles from Bauhinia tomentosa: Characterization and application towards synthesis of 1, 3 diolein

Lakshminarayanan

Shereen

Niraimathi

et al. 2021

Sci Rep

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The green synthesis of NPs through plant extracts can be a modest, one-pot alternative synthesis to the conventional physical or chemical method. The prime focus of this study is to produce MNPs by the reducing effect of Bauhinia tomentosa leaf extract, and it was immobilized in porcine pancreatic lipase (PPL). Synthesized NPs were characterized by field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and Raman spectroscopy, UV–Vis Spectrometry, Thermogravimetry, and Differential Scanning Calorimeter (DSC), Zeta potential test, VSM, BET and Fourier Transform Infrared Spectroscopy (FTIR). The effect of process parameters was studied, about the efficiency of immobilization are enzyme stability, the extent of enzyme reusability, its separation from products, the activity of immobilized enzyme, recovery, and its loss. Finally, the immobilized lipase was used for the synthesis of 1,3-diolein using enzyme-mediated esterification of oleic acid and glycerol. Under optimized condition (reaction temp-55 $$^\circ $$ ∘ C; molar ratio-2.5:1; pH-7) diolein yield was achieved to be 94%. Therefore, this work was further used for the industrial production of 1,3-diacylglycerol since a perfect enzyme-catalyzed process was observed.

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Section: Introductionmentioning

confidence: 99%

One-pot green synthesis of iron oxide nanoparticles from Bauhinia tomentosa: Characterization and application towards synthesis of 1, 3 diolein

Lakshminarayanan

Shereen

Niraimathi

et al. 2021

Sci Rep

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“…Green Synthesis. Green synthesis of metal oxide nanoparticles is carried out using various extracts [244,245].…”

Section: Hydrothermal (Solvothermal)mentioning

confidence: 99%

Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

Dontsova

Nahirniak

Астрелін

2019

Journal of Nanomaterials

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The features of the properties and creation of nanocomposite metal oxide materials, especially TiO2, ZnO, SnO2, ZrO2, and Fe3O4, and their applications for ecology are considered in the article. It is shown that nanomaterials based on them are very promising for use in the ecological direction, especially as sorbents, photocatalysts, and sensitive layers of gas sensors. The crystallochemical characteristics, surface structure, and surface phenomena that occur when they enter the water and air environment are given for these metal oxides, and it is shown that they play a significant role in obtaining the sorption and catalytic characteristics of these nanomaterials. Particular attention is paid to the dispersion and morphology of metal oxide particles by which their physical and chemical properties can be controlled. Synthesis methods of metal oxide nanomaterials and ways for creating of nanocomposites based on them are characterized, and it is noted that there are many methods for obtaining individual nanoparticles of metal oxides with certain properties. The main task is the correct selection and testing of parameters. The prospects for the production of metal oxide nanocomposites and their application for environmental applications are noted, which will lead to a fundamentally new class of materials and new environmental technologies with their participation.

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“…The fast recombination of free electron (e − ) and the hole pairs (h + ) slow down the degradation process. In the higher photo-degradation of the TiO 2 nanoparticle capped with PVA (anatase phase) sample with a mixed dye solution, increase the density of free charge carriers by effective delay in the recombination time of photogenerated free electron (e − ) and the hole pairs (h + ) and decrease in band gap energy which improve the electron-hole recombination [46,47]. Under the irradiation of TiO 2 nanoparticle, additional charge carriers further react with superoxide species and prevent the electron-hole recombination, and thus relatively increase degradation efficiency.…”

Section: Photocatalytic Studiesmentioning

confidence: 99%

Effect of organic capping agents on the optical and photocatalytic activity of mesoporous TiO2 nanoparticles by sol–gel method

Arularasu¹

2019

SN Appl. Sci.

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In this work, the effect of capping agent effects on the structural, morphological, optical properties and photocatalytic removal of Rhodamine B (RhB) dye has been investigated. TiO 2 nanoparticles were synthesized by a simple, fast and ecofriendly sol-gel method, in the presence of various capping agents, including ethylenediamine, polyvinyl alcohol (PVA), ethylene glycol, glucose and valine. The obtained TiO 2 nanoparticles have been characterized by X-ray diffraction (XRD), energy dispersive X-ray analysis, high resolution scanning electron microscopy and transmission electron microscopy, UV-visible absorption and photoluminescence (PL) spectroscopy. XRD pattern reveals the polycrystalline nature of TiO 2 with anatase structure. The results revealed that the optical absorption band of TiO 2 nanoparticles varied by capping agents. PL spectra exhibited visible emissions due to the formation of defects in the band gap region of TiO 2 nanoparticles. The photocatalytic degradation of RhB dye by synthesized TiO 2 nanoparticles using different capping agents was investigated under UV irradiation and the results demonstrated that TiO 2 nanoparticles have appreciable photocatalytic activity for decomposing RhB dye when PVA was used as a capping agent. The results explained that the preparation of TiO 2 nanoparticles showed a high efficiency in the removal of organic dyes.

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An innovative approach for green synthesis of iron oxide nanoparticles: Characterization and its photocatalytic activity

Cited by 95 publications

References 46 publications

One-pot green synthesis of iron oxide nanoparticles from Bauhinia tomentosa: Characterization and application towards synthesis of 1, 3 diolein

One-pot green synthesis of iron oxide nanoparticles from Bauhinia tomentosa: Characterization and application towards synthesis of 1, 3 diolein

Metaloxide Nanomaterials and Nanocomposites of Ecological Purpose

Effect of organic capping agents on the optical and photocatalytic activity of mesoporous TiO2 nanoparticles by sol–gel method

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