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Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation

[Image: see text] Employing a visible-light-driven direct Z-scheme photocatalytic system for the abatement of organic pollutants has become the key scientific approach in the area of photocatalysis. In this study, a highly efficient Z-scheme ZnIn(2)S(4)/MoO(3) heterojunction was prepared through the...

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Autores principales: Khan, Azam, Danish, Mohtaram, Alam, Umair, Zafar, Saad, Muneer, Mohammad
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161029/
https://www.ncbi.nlm.nih.gov/pubmed/32309729
http://dx.doi.org/10.1021/acsomega.0c00446
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author Khan, Azam
Danish, Mohtaram
Alam, Umair
Zafar, Saad
Muneer, Mohammad
author_facet Khan, Azam
Danish, Mohtaram
Alam, Umair
Zafar, Saad
Muneer, Mohammad
author_sort Khan, Azam
collection PubMed
description [Image: see text] Employing a visible-light-driven direct Z-scheme photocatalytic system for the abatement of organic pollutants has become the key scientific approach in the area of photocatalysis. In this study, a highly efficient Z-scheme ZnIn(2)S(4)/MoO(3) heterojunction was prepared through the hydrothermal method, followed by the impregnation technique that facilitates the formation of an interface between the two phases for efficient photocatalysis. The structural, optical, and surface elemental composition and morphology of the prepared samples were characterized in detail through X-ray diffraction, UV–vis diffuse reflectance spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The results indicate that the composite materials have a strong intimate contact between the two phases, which is beneficial for the effective separation of photoinduced charge carriers. The visible-light-mediated photocatalytic activity of the samples was tested by studying the degradation of methyl orange (MO), rhodamine B (RhB), and paracetamol in aqueous suspension. An optimum loading content of 40 wt % ZnIn(2)S(4)/MoO(3) exhibits the best degradation efficiency toward the above pollutants compared to bare MoO(3) and ZnIn(2)S(4). The improved photocatalytic activity could be ascribed to the efficient light-harvesting property and prolonged charge separation ability of the Z-scheme ZnIn(2)S(4)/MoO(3) catalyst. Based on reactive species determination results, the Z-scheme charge transfer mechanism of ZnIn(2)S(4)/MoO(3) was discussed and proposed. This study paves the way toward the development of highly efficient direct Z-scheme structures for a multitude of applications.
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spelling pubmed-71610292020-04-17 Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation Khan, Azam Danish, Mohtaram Alam, Umair Zafar, Saad Muneer, Mohammad ACS Omega [Image: see text] Employing a visible-light-driven direct Z-scheme photocatalytic system for the abatement of organic pollutants has become the key scientific approach in the area of photocatalysis. In this study, a highly efficient Z-scheme ZnIn(2)S(4)/MoO(3) heterojunction was prepared through the hydrothermal method, followed by the impregnation technique that facilitates the formation of an interface between the two phases for efficient photocatalysis. The structural, optical, and surface elemental composition and morphology of the prepared samples were characterized in detail through X-ray diffraction, UV–vis diffuse reflectance spectra, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. The results indicate that the composite materials have a strong intimate contact between the two phases, which is beneficial for the effective separation of photoinduced charge carriers. The visible-light-mediated photocatalytic activity of the samples was tested by studying the degradation of methyl orange (MO), rhodamine B (RhB), and paracetamol in aqueous suspension. An optimum loading content of 40 wt % ZnIn(2)S(4)/MoO(3) exhibits the best degradation efficiency toward the above pollutants compared to bare MoO(3) and ZnIn(2)S(4). The improved photocatalytic activity could be ascribed to the efficient light-harvesting property and prolonged charge separation ability of the Z-scheme ZnIn(2)S(4)/MoO(3) catalyst. Based on reactive species determination results, the Z-scheme charge transfer mechanism of ZnIn(2)S(4)/MoO(3) was discussed and proposed. This study paves the way toward the development of highly efficient direct Z-scheme structures for a multitude of applications. American Chemical Society 2020-04-01 /pmc/articles/PMC7161029/ /pubmed/32309729 http://dx.doi.org/10.1021/acsomega.0c00446 Text en Copyright © 2020 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Khan, Azam
Danish, Mohtaram
Alam, Umair
Zafar, Saad
Muneer, Mohammad
Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title_full Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title_fullStr Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title_full_unstemmed Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title_short Facile Synthesis of a Z-Scheme ZnIn(2)S(4)/MoO(3) Heterojunction with Enhanced Photocatalytic Activity under Visible Light Irradiation
title_sort facile synthesis of a z-scheme znin(2)s(4)/moo(3) heterojunction with enhanced photocatalytic activity under visible light irradiation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7161029/
https://www.ncbi.nlm.nih.gov/pubmed/32309729
http://dx.doi.org/10.1021/acsomega.0c00446
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