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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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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. |
format | Online Article Text |
id | pubmed-7161029 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
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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