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Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets
Herein, defect intrinsic hexagonal boron nitride (h-BN) quantum sheets (QS) and bismuth oxide (Bi(2)O(3)) QS were prepared from bulk materials by ball milling and solvent stripping, respectively. The h-BN/Bi(2)O(3) heterostructure was fabricated via a facile self-assembly method. The structure and p...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9067371/ https://www.ncbi.nlm.nih.gov/pubmed/35520133 http://dx.doi.org/10.1039/d2ra02115c |
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author | Zhou, Jianwei Duo, Fangfang Wang, Chubei Chu, Liangliang Zhang, Mingliang Yan, Donglei |
author_facet | Zhou, Jianwei Duo, Fangfang Wang, Chubei Chu, Liangliang Zhang, Mingliang Yan, Donglei |
author_sort | Zhou, Jianwei |
collection | PubMed |
description | Herein, defect intrinsic hexagonal boron nitride (h-BN) quantum sheets (QS) and bismuth oxide (Bi(2)O(3)) QS were prepared from bulk materials by ball milling and solvent stripping, respectively. The h-BN/Bi(2)O(3) heterostructure was fabricated via a facile self-assembly method. The structure and performance of samples were systematically characterized. As expected, the layered h-BN QS is tightly coated on the surface of Bi(2)O(3) QS in a face-to-face stacking structure and interconnected by strong interface interactions. The introduction of h-BN QS can significantly enhance the separation efficiency of the photogenerated carriers of h-BN/Bi(2)O(3). The experimental results show that the photocatalytic activity of h-BN/Bi(2)O(3) is markedly improved. The first-order reaction rate constant of the 3wt%-BN/Bi(2)O(3) sample is 3.2 × 10(−2) min(−1), about 4.5 times that of Bi(2)O(3) QS. By means of the active species capture test, it is found that the main oxidation species are holes (h(+)), followed by hydroxyl radicals (˙OH). Based on the surface charge transfer characteristics, the photogenerated carrier transfer and separation efficiency can be improved by coupling h-BN and a Bi(2)O(3) semiconductor to the Schottky heterojunction, and the strong interaction between heterogeneous interfaces also enhances the surface catalytic reaction efficiency, which improves dramatically the photocatalytic performance. |
format | Online Article Text |
id | pubmed-9067371 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90673712022-05-04 Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets Zhou, Jianwei Duo, Fangfang Wang, Chubei Chu, Liangliang Zhang, Mingliang Yan, Donglei RSC Adv Chemistry Herein, defect intrinsic hexagonal boron nitride (h-BN) quantum sheets (QS) and bismuth oxide (Bi(2)O(3)) QS were prepared from bulk materials by ball milling and solvent stripping, respectively. The h-BN/Bi(2)O(3) heterostructure was fabricated via a facile self-assembly method. The structure and performance of samples were systematically characterized. As expected, the layered h-BN QS is tightly coated on the surface of Bi(2)O(3) QS in a face-to-face stacking structure and interconnected by strong interface interactions. The introduction of h-BN QS can significantly enhance the separation efficiency of the photogenerated carriers of h-BN/Bi(2)O(3). The experimental results show that the photocatalytic activity of h-BN/Bi(2)O(3) is markedly improved. The first-order reaction rate constant of the 3wt%-BN/Bi(2)O(3) sample is 3.2 × 10(−2) min(−1), about 4.5 times that of Bi(2)O(3) QS. By means of the active species capture test, it is found that the main oxidation species are holes (h(+)), followed by hydroxyl radicals (˙OH). Based on the surface charge transfer characteristics, the photogenerated carrier transfer and separation efficiency can be improved by coupling h-BN and a Bi(2)O(3) semiconductor to the Schottky heterojunction, and the strong interaction between heterogeneous interfaces also enhances the surface catalytic reaction efficiency, which improves dramatically the photocatalytic performance. The Royal Society of Chemistry 2022-05-04 /pmc/articles/PMC9067371/ /pubmed/35520133 http://dx.doi.org/10.1039/d2ra02115c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zhou, Jianwei Duo, Fangfang Wang, Chubei Chu, Liangliang Zhang, Mingliang Yan, Donglei Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title | Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title_full | Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title_fullStr | Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title_full_unstemmed | Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title_short | Robust photocatalytic activity of two-dimensional h-BN/Bi(2)O(3) heterostructure quantum sheets |
title_sort | robust photocatalytic activity of two-dimensional h-bn/bi(2)o(3) heterostructure quantum sheets |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9067371/ https://www.ncbi.nlm.nih.gov/pubmed/35520133 http://dx.doi.org/10.1039/d2ra02115c |
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