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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...

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Autores principales: Zhang, Mengyuan, Qin, Jiaqian, Yu, Pengfei, Zhang, Bing, Ma, Mingzhen, Zhang, Xinyu, Liu, Riping
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Beilstein-Institut 2018
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.
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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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