Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61156
Title: In situ fabrication of α-Bi2O3/(BiO)2CO3 nanoplate heterojunctions with tunable optical property and photocatalytic activity
Authors: Huang, Y
Wang, W
Zhang, Q
Cao, JJ
Huang, RJ
Ho, W
Lee, SC 
Issue Date: 2016
Source: Scientific reports, 21 2016, v. 6, no. , p. 1-9
Abstract: Exploring the full potential use of heterojunction photocatalysts containing bismuth has attracted considerable interest in recent years. Fabrication of well-defined heterojunction photocatalysts with precise modulation of their chemical composition is crucial for tuning their optical properties and photocatalytic activity. In this study, we fabricated nanoplate α-Bi2O3/(BiO)2CO3 heterojunctions through in situ thermal treatment of (BiO)2CO3 nanoplates synthesized using a facile hydrothermal process. Characterization results showed that the as-prepared Bi2O3/(BiO)2CO3 heterojunctions possessed distinct crystal interface and exhibited pronounced structural and optical modulation, resulting in significant improvement of their photocatalytic activity for NO removal under simulated solar light irradiation compared with pristine (BiO)2CO3. Electron spin resonance spectroscopy showed that OH radicals were the major reactive species involved in NO degradation, which is consistent with the theoretical analysis. The heterojunction formation can not only broaden the light absorption range but also improve the charge separation of photo-induced electron-hole pairs. This study is an important advancement in the development of semiconductor heterojunctions towards achieving functional photocatalysts.
Publisher: Nature Publishing Group
Journal: Scientific reports 
EISSN: 2045-2322
DOI: 10.1038/srep23435
Rights: This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
The following publication Huang, Y. et al. In situ Fabrication of α-Bi2O3/(BiO)2CO3 Nanoplate Heterojunctions with Tunable Optical Property and Photocatalytic Activity. Sci. Rep. 6, 23435 (2016) is available at https://dx.doi.org/10.1038/srep23435
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