Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study

This article reports a simple, cost-effective, and eco-friendly biosynthesis of ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves’ water extract. For the first time, we used a green synthetic route via C. viminalis leaves’ extract to prepare ZnO/Fe3O4 nanocomposites (NCs) using zinc acetat...

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Autores principales:	Dwivedi Poonam, Jatrana Indu, Khan Azhar U., Khan Azmat Ali, Satiya Honey, Khan Masudulla, Moon Il Soo, Alam Mahboob
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	zno/fe3o4 nanocomposites callistemon viminalis xps photodegradation methylene blue Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
Acceso en línea:	https://doaj.org/article/4cc7ae543c7b41a39933484e81229e0e
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spelling	oai:doaj.org-article:4cc7ae543c7b41a39933484e81229e0e2021-12-05T14:10:58ZPhotoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study2191-909710.1515/ntrev-2021-0117https://doaj.org/article/4cc7ae543c7b41a39933484e81229e0e2021-11-01T00:00:00Zhttps://doi.org/10.1515/ntrev-2021-0117https://doaj.org/toc/2191-9097This article reports a simple, cost-effective, and eco-friendly biosynthesis of ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves’ water extract. For the first time, we used a green synthetic route via C. viminalis leaves’ extract to prepare ZnO/Fe3O4 nanocomposites (NCs) using zinc acetate and ferric chloride as precursor materials. Fourier transform infrared (FTIR) spectroscopic results revealed polyphenolic compounds mainly phenolic acids present in the plant extract acted as both reducing and stabilizing agents to synthesize ZnO/Fe3O4 NCs. Outcomes of XRD and X-ray photoelectron spectroscopy confirmed the formation of ZnO–Fe3O4 heterojunction in ZnO/Fe3O4 NCs, with crystallite sizes of 45, 35, and 60 nm, respectively, according to Debye–Scherrer’s formula. EDX confirmed Zn, Fe, and O in the ZnO/Fe3O4 nanocomposite. Scanning electron microscopy and transmission electron microscopy (TEM) analyses revealed the existence of both ZnO and Fe3O4 in the NCs with some agglomeration. The thermal stability of NCs was evaluated using thermogravimetric analysis (TGA) and differential thermal analysis (DTA) in a nitrogen atmosphere. In addition, as-prepared ZnO/Fe3O4 NCs along with biosynthesized ZnO and Fe3O4 (prepared by C. viminalis extract) nanoparticles were examined for photodegradation of methylene blue under visible light irradiation for 150 min. The result reveals that the photodegradation efficiency of ZnO/Fe3O4 NCs (99.09%) was higher compared to that of monometallic ZnO (84.7%) and Fe3O4 (37.1%) nanoparticles.Dwivedi PoonamJatrana InduKhan Azhar U.Khan Azmat AliSatiya HoneyKhan MasudullaMoon Il SooAlam MahboobDe Gruyterarticlezno/fe3o4 nanocompositescallistemon viminalisxpsphotodegradationmethylene blueTechnologyTChemical technologyTP1-1185Physical and theoretical chemistryQD450-801ENNanotechnology Reviews, Vol 10, Iss 1, Pp 1912-1925 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	zno/fe3o4 nanocomposites callistemon viminalis xps photodegradation methylene blue Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801
spellingShingle	zno/fe3o4 nanocomposites callistemon viminalis xps photodegradation methylene blue Technology T Chemical technology TP1-1185 Physical and theoretical chemistry QD450-801 Dwivedi Poonam Jatrana Indu Khan Azhar U. Khan Azmat Ali Satiya Honey Khan Masudulla Moon Il Soo Alam Mahboob Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
description	This article reports a simple, cost-effective, and eco-friendly biosynthesis of ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves’ water extract. For the first time, we used a green synthetic route via C. viminalis leaves’ extract to prepare ZnO/Fe3O4 nanocomposites (NCs) using zinc acetate and ferric chloride as precursor materials. Fourier transform infrared (FTIR) spectroscopic results revealed polyphenolic compounds mainly phenolic acids present in the plant extract acted as both reducing and stabilizing agents to synthesize ZnO/Fe3O4 NCs. Outcomes of XRD and X-ray photoelectron spectroscopy confirmed the formation of ZnO–Fe3O4 heterojunction in ZnO/Fe3O4 NCs, with crystallite sizes of 45, 35, and 60 nm, respectively, according to Debye–Scherrer’s formula. EDX confirmed Zn, Fe, and O in the ZnO/Fe3O4 nanocomposite. Scanning electron microscopy and transmission electron microscopy (TEM) analyses revealed the existence of both ZnO and Fe3O4 in the NCs with some agglomeration. The thermal stability of NCs was evaluated using thermogravimetric analysis (TGA) and differential thermal analysis (DTA) in a nitrogen atmosphere. In addition, as-prepared ZnO/Fe3O4 NCs along with biosynthesized ZnO and Fe3O4 (prepared by C. viminalis extract) nanoparticles were examined for photodegradation of methylene blue under visible light irradiation for 150 min. The result reveals that the photodegradation efficiency of ZnO/Fe3O4 NCs (99.09%) was higher compared to that of monometallic ZnO (84.7%) and Fe3O4 (37.1%) nanoparticles.
format	article
author	Dwivedi Poonam Jatrana Indu Khan Azhar U. Khan Azmat Ali Satiya Honey Khan Masudulla Moon Il Soo Alam Mahboob
author_facet	Dwivedi Poonam Jatrana Indu Khan Azhar U. Khan Azmat Ali Satiya Honey Khan Masudulla Moon Il Soo Alam Mahboob
author_sort	Dwivedi Poonam
title	Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
title_short	Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
title_full	Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
title_fullStr	Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
title_full_unstemmed	Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study
title_sort	photoremediation of methylene blue by biosynthesized zno/fe3o4 nanocomposites using callistemon viminalis leaves aqueous extract: a comparative study
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/4cc7ae543c7b41a39933484e81229e0e
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Photoremediation of methylene blue by biosynthesized ZnO/Fe3O4 nanocomposites using Callistemon viminalis leaves aqueous extract: A comparative study

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