Defect engineering in atomically-thin bismuth oxychloride towards photocatalytic oxygen evolution
Abstract
Photocatalytic solar energy conversion is a clean technology for producing renewable energy sources, but its efficiency is greatly hindered by the kinetically sluggish oxygen evolution reaction. Herein, confined defects in atomically-thin BiOCl nanosheets were created to serve as a remarkable platform to explore the relationship between defects and photocatalytic activity. Surface defects can be clearly observed on atomically-thin BiOCl nanosheets from scanning transmission electron microscopy images. Theoretical/experimental results suggest that defect engineering increased states of density and narrowed the band gap. With combined effects from defect induced shortened hole migratory paths and creation of coordination-unsaturated active atoms with dangling bonds, defect-rich BiOCl nanosheets displayed 3 and 8 times higher photocatalytic activity towards oxygen evolution compared with atomically-thin BiOCl nanosheets and bulk BiOCl, respectively. As a result, this successful application of defect engineering will pave a new pathway for improving photocatalytic oxygen evolution activity of other materials.
- Authors:
-
[1];
[3];
[4];
[4];
[2];
[2]
- Jiangsu Univ., Zhenjiang (People's Republic of China); Nanyang Technological Univ. (Singapore)
- Nanyang Technological Univ. (Singapore)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Jiangsu Univ., Zhenjiang (People's Republic of China)
- East China University of Science and Technology, Shanghai (People's Republic of China)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1394603
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Materials Chemistry. A
- Additional Journal Information:
- Journal Volume: 5; Journal Issue: 27; Journal ID: ISSN 2050-7488
- Publisher:
- Royal Society of Chemistry
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
Citation Formats
Di, Jun, Chen, Chao, Yang, Shi -Ze, Ji, Mengxia, Yan, Cheng, Gu, Kaizhi, Xia, Jiexiang, Li, Huaming, Li, Shuzhou, and Liu, Zheng. Defect engineering in atomically-thin bismuth oxychloride towards photocatalytic oxygen evolution. United States: N. p., 2017.
Web. doi:10.1039/c7ta03624h.
Di, Jun, Chen, Chao, Yang, Shi -Ze, Ji, Mengxia, Yan, Cheng, Gu, Kaizhi, Xia, Jiexiang, Li, Huaming, Li, Shuzhou, & Liu, Zheng. Defect engineering in atomically-thin bismuth oxychloride towards photocatalytic oxygen evolution. United States. https://doi.org/10.1039/c7ta03624h
Di, Jun, Chen, Chao, Yang, Shi -Ze, Ji, Mengxia, Yan, Cheng, Gu, Kaizhi, Xia, Jiexiang, Li, Huaming, Li, Shuzhou, and Liu, Zheng. Mon .
"Defect engineering in atomically-thin bismuth oxychloride towards photocatalytic oxygen evolution". United States. https://doi.org/10.1039/c7ta03624h. https://www.osti.gov/servlets/purl/1394603.
@article{osti_1394603,
title = {Defect engineering in atomically-thin bismuth oxychloride towards photocatalytic oxygen evolution},
author = {Di, Jun and Chen, Chao and Yang, Shi -Ze and Ji, Mengxia and Yan, Cheng and Gu, Kaizhi and Xia, Jiexiang and Li, Huaming and Li, Shuzhou and Liu, Zheng},
abstractNote = {Photocatalytic solar energy conversion is a clean technology for producing renewable energy sources, but its efficiency is greatly hindered by the kinetically sluggish oxygen evolution reaction. Herein, confined defects in atomically-thin BiOCl nanosheets were created to serve as a remarkable platform to explore the relationship between defects and photocatalytic activity. Surface defects can be clearly observed on atomically-thin BiOCl nanosheets from scanning transmission electron microscopy images. Theoretical/experimental results suggest that defect engineering increased states of density and narrowed the band gap. With combined effects from defect induced shortened hole migratory paths and creation of coordination-unsaturated active atoms with dangling bonds, defect-rich BiOCl nanosheets displayed 3 and 8 times higher photocatalytic activity towards oxygen evolution compared with atomically-thin BiOCl nanosheets and bulk BiOCl, respectively. As a result, this successful application of defect engineering will pave a new pathway for improving photocatalytic oxygen evolution activity of other materials.},
doi = {10.1039/c7ta03624h},
journal = {Journal of Materials Chemistry. A},
number = 27,
volume = 5,
place = {United States},
year = {Mon Jun 26 00:00:00 EDT 2017},
month = {Mon Jun 26 00:00:00 EDT 2017}
}
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