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Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance
Photocatalytic elimination of antibiotics from the environment and drinking water is of great significance for human health. However, the efficiency of photoremoval of antibiotics such as tetracycline is severely limited by the prompt recombination of electron holes and slow charge migration efficac...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254501/ https://www.ncbi.nlm.nih.gov/pubmed/37299701 http://dx.doi.org/10.3390/nano13111798 |
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author | Wang, Wenjie Yang, Decai Mou, Yifan Liao, Lijun Wang, Shijie Guo, Liping Wang, Xuepeng Li, Zhenzi Zhou, Wei |
author_facet | Wang, Wenjie Yang, Decai Mou, Yifan Liao, Lijun Wang, Shijie Guo, Liping Wang, Xuepeng Li, Zhenzi Zhou, Wei |
author_sort | Wang, Wenjie |
collection | PubMed |
description | Photocatalytic elimination of antibiotics from the environment and drinking water is of great significance for human health. However, the efficiency of photoremoval of antibiotics such as tetracycline is severely limited by the prompt recombination of electron holes and slow charge migration efficacy. Fabrication of low-dimensional heterojunction composites is an efficient method for shortening charge carrier migration distance and enhancing charge transfer efficiency. Herein, 2D/2D mesoporous WO(3)/CeO(2) laminated Z-scheme heterojunctions were successfully prepared using a two-step hydrothermal process. The mesoporous structure of the composites was proved by nitrogen sorption isotherms, in which sorption-desorption hysteresis was observed. The intimate contact and charge transfer mechanism between WO(3) nanoplates and CeO(2) nanosheets was investigated using high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy measurements, respectively. Photocatalytic tetracycline degradation efficiency was noticeably promoted by the formation of 2D/2D laminated heterojunctions. The improved photocatalytic activity could be attributed to the formation of Z-scheme laminated heterostructure and 2D morphology favoring spatial charge separation, confirmed by various characterizations. The optimized 5WO(3)/CeO(2) (5 wt.% WO(3)) composites can degrade more than 99% of tetracycline in 80 min, achieving a peak TC photodegradation efficiency of 0.0482 min(−1), which is approximately 3.4 times that of pristine CeO(2). A Z-scheme mechanism is proposed for photocatalytic tetracycline by from WO(3)/CeO(2) Z-scheme laminated heterojunctions based on the experimental results. |
format | Online Article Text |
id | pubmed-10254501 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-102545012023-06-10 Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance Wang, Wenjie Yang, Decai Mou, Yifan Liao, Lijun Wang, Shijie Guo, Liping Wang, Xuepeng Li, Zhenzi Zhou, Wei Nanomaterials (Basel) Article Photocatalytic elimination of antibiotics from the environment and drinking water is of great significance for human health. However, the efficiency of photoremoval of antibiotics such as tetracycline is severely limited by the prompt recombination of electron holes and slow charge migration efficacy. Fabrication of low-dimensional heterojunction composites is an efficient method for shortening charge carrier migration distance and enhancing charge transfer efficiency. Herein, 2D/2D mesoporous WO(3)/CeO(2) laminated Z-scheme heterojunctions were successfully prepared using a two-step hydrothermal process. The mesoporous structure of the composites was proved by nitrogen sorption isotherms, in which sorption-desorption hysteresis was observed. The intimate contact and charge transfer mechanism between WO(3) nanoplates and CeO(2) nanosheets was investigated using high-resolution transmission electron microscopy and X-ray photoelectron spectroscopy measurements, respectively. Photocatalytic tetracycline degradation efficiency was noticeably promoted by the formation of 2D/2D laminated heterojunctions. The improved photocatalytic activity could be attributed to the formation of Z-scheme laminated heterostructure and 2D morphology favoring spatial charge separation, confirmed by various characterizations. The optimized 5WO(3)/CeO(2) (5 wt.% WO(3)) composites can degrade more than 99% of tetracycline in 80 min, achieving a peak TC photodegradation efficiency of 0.0482 min(−1), which is approximately 3.4 times that of pristine CeO(2). A Z-scheme mechanism is proposed for photocatalytic tetracycline by from WO(3)/CeO(2) Z-scheme laminated heterojunctions based on the experimental results. MDPI 2023-06-04 /pmc/articles/PMC10254501/ /pubmed/37299701 http://dx.doi.org/10.3390/nano13111798 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Wenjie Yang, Decai Mou, Yifan Liao, Lijun Wang, Shijie Guo, Liping Wang, Xuepeng Li, Zhenzi Zhou, Wei Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title | Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title_full | Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title_fullStr | Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title_full_unstemmed | Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title_short | Construction of 2D/2D Mesoporous WO(3)/CeO(2) Laminated Heterojunctions for Optimized Photocatalytic Performance |
title_sort | construction of 2d/2d mesoporous wo(3)/ceo(2) laminated heterojunctions for optimized photocatalytic performance |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10254501/ https://www.ncbi.nlm.nih.gov/pubmed/37299701 http://dx.doi.org/10.3390/nano13111798 |
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