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Title: Liquid-Phase Exfoliation into Monolayered BiOBr Nanosheets for Photocatalytic Oxidation and Reduction

Abstract

Monolayered photocatalytic materials have attracted huge research interests in terms of their large specific surface area and ample active sites. Sillén-structured layered BiOX (X = Cl, Br, I) casts great prospects owing to their strong photo-oxidation ability and high stability. Fabrication of monolayered BiOX by a facile, low-cost, and scalable approach is highly challenging and anticipated. Herein, we describe the large-scale preparation of monolayered BiOBr nanosheets with a thickness of ~0.85 nm via a readily achievable liquid-phase exfoliation strategy with assistance of formamide at ambient conditions. The as-obtained monolayered BiOBr nanosheets are allowed diverse superiorities, such as enhanced specific surface area, promoted band structure, and strengthened charge separation. Profiting from these benefits, the advanced BiOBr monolayers not only show excellent adsorption and photodegradation performance for treating contaminants, but also demonstrate a greatly promoted photocatalytic activity for CO2 reduction into CO and CH4. Additionally, monolayered BiOI nanosheets have also been obtained by the same synthetic approach. Our work offers a mild and general approach for preparation of monolayered BiOX, and may have huge potential to be extended to the synthesis of other single-layer two-dimensional materials.

Authors:
 [1]; ORCiD logo [1];  [2]; ORCiD logo [2];  [1];  [1];  [1];  [1]; ORCiD logo [1]
  1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, China
  2. Center of Materials Physics and Chemistry and Department of Physics, Beihang University, Beijing 100191, China
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
DOE - BASIC ENERGY SCIENCESDOE-NNSAFOREIGN
OSTI Identifier:
1409088
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Sustainable Chemistry & Engineering; Journal Volume: 5; Journal Issue: 11
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Yu, Hongjian, Huang, Hongwei, Xu, Kang, Hao, Weichang, Guo, Yuxi, Wang, Shuobo, Shen, Xiulin, Pan, Shaofeng, and Zhang, Yihe. Liquid-Phase Exfoliation into Monolayered BiOBr Nanosheets for Photocatalytic Oxidation and Reduction. United States: N. p., 2017. Web. doi:10.1021/acssuschemeng.7b02508.
Yu, Hongjian, Huang, Hongwei, Xu, Kang, Hao, Weichang, Guo, Yuxi, Wang, Shuobo, Shen, Xiulin, Pan, Shaofeng, & Zhang, Yihe. Liquid-Phase Exfoliation into Monolayered BiOBr Nanosheets for Photocatalytic Oxidation and Reduction. United States. doi:10.1021/acssuschemeng.7b02508.
Yu, Hongjian, Huang, Hongwei, Xu, Kang, Hao, Weichang, Guo, Yuxi, Wang, Shuobo, Shen, Xiulin, Pan, Shaofeng, and Zhang, Yihe. Tue . "Liquid-Phase Exfoliation into Monolayered BiOBr Nanosheets for Photocatalytic Oxidation and Reduction". United States. doi:10.1021/acssuschemeng.7b02508.
@article{osti_1409088,
title = {Liquid-Phase Exfoliation into Monolayered BiOBr Nanosheets for Photocatalytic Oxidation and Reduction},
author = {Yu, Hongjian and Huang, Hongwei and Xu, Kang and Hao, Weichang and Guo, Yuxi and Wang, Shuobo and Shen, Xiulin and Pan, Shaofeng and Zhang, Yihe},
abstractNote = {Monolayered photocatalytic materials have attracted huge research interests in terms of their large specific surface area and ample active sites. Sillén-structured layered BiOX (X = Cl, Br, I) casts great prospects owing to their strong photo-oxidation ability and high stability. Fabrication of monolayered BiOX by a facile, low-cost, and scalable approach is highly challenging and anticipated. Herein, we describe the large-scale preparation of monolayered BiOBr nanosheets with a thickness of ~0.85 nm via a readily achievable liquid-phase exfoliation strategy with assistance of formamide at ambient conditions. The as-obtained monolayered BiOBr nanosheets are allowed diverse superiorities, such as enhanced specific surface area, promoted band structure, and strengthened charge separation. Profiting from these benefits, the advanced BiOBr monolayers not only show excellent adsorption and photodegradation performance for treating contaminants, but also demonstrate a greatly promoted photocatalytic activity for CO2 reduction into CO and CH4. Additionally, monolayered BiOI nanosheets have also been obtained by the same synthetic approach. Our work offers a mild and general approach for preparation of monolayered BiOX, and may have huge potential to be extended to the synthesis of other single-layer two-dimensional materials.},
doi = {10.1021/acssuschemeng.7b02508},
journal = {ACS Sustainable Chemistry & Engineering},
number = 11,
volume = 5,
place = {United States},
year = {Tue Sep 26 00:00:00 EDT 2017},
month = {Tue Sep 26 00:00:00 EDT 2017}
}