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Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance
The surfactant modification of catalyst morphology is considered as an effective method to improve photocatalytic performance. In this work, the visible-light-driven composite photocatalyst was obtained by growing CdS nanoparticles in the cubic crystal structure of CdCO(3), which, after surfactant m...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657923/ https://www.ncbi.nlm.nih.gov/pubmed/36364699 http://dx.doi.org/10.3390/nano12213923 |
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author | Wang, Wen-Yi Sang, Tian Zhong, Yan Hu, Chao-Hao Wang, Dian-Hui Ye, Jun-Chen Wei, Ni-Ni Liu, Hao |
author_facet | Wang, Wen-Yi Sang, Tian Zhong, Yan Hu, Chao-Hao Wang, Dian-Hui Ye, Jun-Chen Wei, Ni-Ni Liu, Hao |
author_sort | Wang, Wen-Yi |
collection | PubMed |
description | The surfactant modification of catalyst morphology is considered as an effective method to improve photocatalytic performance. In this work, the visible-light-driven composite photocatalyst was obtained by growing CdS nanoparticles in the cubic crystal structure of CdCO(3), which, after surfactant modification, led to the formation of CdCO(3) elliptical spheres. This reasonable composite-structure-modification design effectively increased the specific surface area, fully exposing the catalytic-activity check point. Cd(2+) from CdCO(3) can enter the CdS crystal structure to generate lattice distortion and form hole traps, which productively promoted the separation and transfer of CdS photogenerated electron-hole pairs. The prepared 5-CdS/CdCO(3)@SDS exhibited excellent Cr(VI) photocatalytic activity with a reduction efficiency of 86.9% within 30 min, and the reduction rate was 0.0675 min(−1), which was 15.57 and 14.46 times that of CdS and CdCO(3), respectively. Finally, the main active substances during the reduction process, the photogenerated charge transfer pathways related to heterojunctions and the catalytic mechanism were proposed and analyzed. |
format | Online Article Text |
id | pubmed-9657923 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96579232022-11-15 Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance Wang, Wen-Yi Sang, Tian Zhong, Yan Hu, Chao-Hao Wang, Dian-Hui Ye, Jun-Chen Wei, Ni-Ni Liu, Hao Nanomaterials (Basel) Article The surfactant modification of catalyst morphology is considered as an effective method to improve photocatalytic performance. In this work, the visible-light-driven composite photocatalyst was obtained by growing CdS nanoparticles in the cubic crystal structure of CdCO(3), which, after surfactant modification, led to the formation of CdCO(3) elliptical spheres. This reasonable composite-structure-modification design effectively increased the specific surface area, fully exposing the catalytic-activity check point. Cd(2+) from CdCO(3) can enter the CdS crystal structure to generate lattice distortion and form hole traps, which productively promoted the separation and transfer of CdS photogenerated electron-hole pairs. The prepared 5-CdS/CdCO(3)@SDS exhibited excellent Cr(VI) photocatalytic activity with a reduction efficiency of 86.9% within 30 min, and the reduction rate was 0.0675 min(−1), which was 15.57 and 14.46 times that of CdS and CdCO(3), respectively. Finally, the main active substances during the reduction process, the photogenerated charge transfer pathways related to heterojunctions and the catalytic mechanism were proposed and analyzed. MDPI 2022-11-07 /pmc/articles/PMC9657923/ /pubmed/36364699 http://dx.doi.org/10.3390/nano12213923 Text en © 2022 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, Wen-Yi Sang, Tian Zhong, Yan Hu, Chao-Hao Wang, Dian-Hui Ye, Jun-Chen Wei, Ni-Ni Liu, Hao Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title | Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title_full | Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title_fullStr | Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title_full_unstemmed | Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title_short | Surfactant-Modified CdS/CdCO(3) Composite Photocatalyst Morphology Enhances Visible-Light-Driven Cr(VI) Reduction Performance |
title_sort | surfactant-modified cds/cdco(3) composite photocatalyst morphology enhances visible-light-driven cr(vi) reduction performance |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657923/ https://www.ncbi.nlm.nih.gov/pubmed/36364699 http://dx.doi.org/10.3390/nano12213923 |
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