skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [2];  [5]; ORCiD logo [4]; ORCiD logo [4]; ORCiD logo [2]; ORCiD logo [2]
  1. Jiangsu Univ., Zhenjiang (People's Republic of China); Nanyang Technological Univ. (Singapore)
  2. Nanyang Technological Univ. (Singapore)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Jiangsu Univ., Zhenjiang (People's Republic of China)
  5. 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) (SC-22)
OSTI Identifier:
1394603
Grant/Contract Number:
AC05-00OR22725
Resource Type:
Journal Article: 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. doi: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. doi:10.1039/c7ta03624h.
@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}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on June 26, 2018
Publisher's Version of Record

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

Save / Share: