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Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity
In this paper, an efficient method to produce a ZnO/BiOI nano-heterojunction is developed by a facile solution method followed by calcination. By tuning the ratio of Zn/Bi, the morphology varies from nanoplates, flowers to nanoparticles. The heterojunction formed between ZnO and BiOI decreases the r...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852526/ https://www.ncbi.nlm.nih.gov/pubmed/29600140 http://dx.doi.org/10.3762/bjnano.9.72 |
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author | Zhang, Mengyuan Qin, Jiaqian Yu, Pengfei Zhang, Bing Ma, Mingzhen Zhang, Xinyu Liu, Riping |
author_facet | Zhang, Mengyuan Qin, Jiaqian Yu, Pengfei Zhang, Bing Ma, Mingzhen Zhang, Xinyu Liu, Riping |
author_sort | Zhang, Mengyuan |
collection | PubMed |
description | In this paper, an efficient method to produce a ZnO/BiOI nano-heterojunction is developed by a facile solution method followed by calcination. By tuning the ratio of Zn/Bi, the morphology varies from nanoplates, flowers to nanoparticles. The heterojunction formed between ZnO and BiOI decreases the recombination rate of photogenerated carriers and enhances the photocatalytic activity of ZnO/BiOI composites. The obtained ZnO/BiOI heterostructured nanocomposites exhibit a significant improvement in the photodegradation of rhodamine B under visible light (λ ≥ 420 nm) irradiation as compared to single-phase ZnO and BiOI. A sample with a Zn/Bi ratio of 3:1 showed the highest photocatalytic activity (≈99.3% after 100 min irradiation). The photodegradation tests indicated that the ZnO/BiOI heterostructured nanocomposites not only exhibit remarkably enhanced and sustainable photocatalytic activity, but also show good recyclability. The excellent photocatalytic activity could be attributed to the high separation efficiency of the photoinduced electron–hole pairs as well as the high specific area. |
format | Online Article Text |
id | pubmed-5852526 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-58525262018-03-29 Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity Zhang, Mengyuan Qin, Jiaqian Yu, Pengfei Zhang, Bing Ma, Mingzhen Zhang, Xinyu Liu, Riping Beilstein J Nanotechnol Full Research Paper In this paper, an efficient method to produce a ZnO/BiOI nano-heterojunction is developed by a facile solution method followed by calcination. By tuning the ratio of Zn/Bi, the morphology varies from nanoplates, flowers to nanoparticles. The heterojunction formed between ZnO and BiOI decreases the recombination rate of photogenerated carriers and enhances the photocatalytic activity of ZnO/BiOI composites. The obtained ZnO/BiOI heterostructured nanocomposites exhibit a significant improvement in the photodegradation of rhodamine B under visible light (λ ≥ 420 nm) irradiation as compared to single-phase ZnO and BiOI. A sample with a Zn/Bi ratio of 3:1 showed the highest photocatalytic activity (≈99.3% after 100 min irradiation). The photodegradation tests indicated that the ZnO/BiOI heterostructured nanocomposites not only exhibit remarkably enhanced and sustainable photocatalytic activity, but also show good recyclability. The excellent photocatalytic activity could be attributed to the high separation efficiency of the photoinduced electron–hole pairs as well as the high specific area. Beilstein-Institut 2018-03-05 /pmc/articles/PMC5852526/ /pubmed/29600140 http://dx.doi.org/10.3762/bjnano.9.72 Text en Copyright © 2018, Zhang et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Zhang, Mengyuan Qin, Jiaqian Yu, Pengfei Zhang, Bing Ma, Mingzhen Zhang, Xinyu Liu, Riping Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title | Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title_full | Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title_fullStr | Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title_full_unstemmed | Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title_short | Facile synthesis of a ZnO–BiOI p–n nano-heterojunction with excellent visible-light photocatalytic activity |
title_sort | facile synthesis of a zno–bioi p–n nano-heterojunction with excellent visible-light photocatalytic activity |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5852526/ https://www.ncbi.nlm.nih.gov/pubmed/29600140 http://dx.doi.org/10.3762/bjnano.9.72 |
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