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Title: Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting

Abstract

Here, we report hydrogen generation from the direct splitting of water by photocatalysis is regarded as a promising and renewable solution for the energy crisis. The key to realize this reaction is to find an efficient and robust photocatalyst that ideally makes use of the energy from sunlight. Recently, due to the attractive properties such as appropriate band structure, ultrahigh specific surface area, and more exposed active sites, two-dimensional (2D) photocatalysts have attracted significant attention for photocatalytic water splitting. This Review attempts to summarize recent progress in the fabrication and applications of 2D photocatalysts including graphene-based photocatalysts, 2D oxides, 2D chalcogenides, 2D carbon nitride, and some other emerging 2D materials for water splitting. The construction strategies and characterization techniques for 2D/2D photocatalysts are summarized. Particular attention has been paid to the role of 2D/2D interfaces in these 2D photocatalysts as the interfaces and heterojunctions are critical for facilitating charge separation and improving photocatalysis efficiency. We also critically discuss their stability as photocatalysts for water splitting. Lastly, we highlight the ongoing challenges and opportunities for the future development of 2D photocatalysts in this exciting and still emerging area of research.

Authors:
 [1];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Guangxi University, Nanning (China). School of Chemistry and Chemical Engineering; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS); Univ. of Tennessee, Knoxville, TN (United States). Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering
  2. Shandong University of Science and Technology, Qingdao (China). College of Chemical and Environmental Engineering; Univ. of Tennessee, Knoxville, TN (United States). Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering
  3. Guangxi University, Nanning (China). School of Chemistry and Chemical Engineering
  4. Univ. of Tennessee, Knoxville, TN (United States). Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
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:
1468083
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
ACS Catalysis
Additional Journal Information:
Journal Volume: 8; Journal Issue: 3; Journal ID: ISSN 2155-5435
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 08 HYDROGEN; hydrogen; interface; photocatalyst; two-dimensional; water splitting

Citation Formats

Su, Tongming, Shao, Qian, Qin, Zuzeng, Guo, Zhanhu, and Wu, Zili. Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting. United States: N. p., 2018. Web. doi:10.1021/acscatal.7b03437.
Su, Tongming, Shao, Qian, Qin, Zuzeng, Guo, Zhanhu, & Wu, Zili. Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting. United States. doi:10.1021/acscatal.7b03437.
Su, Tongming, Shao, Qian, Qin, Zuzeng, Guo, Zhanhu, and Wu, Zili. Tue . "Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting". United States. doi:10.1021/acscatal.7b03437. https://www.osti.gov/servlets/purl/1468083.
@article{osti_1468083,
title = {Role of Interfaces in Two-Dimensional Photocatalyst for Water Splitting},
author = {Su, Tongming and Shao, Qian and Qin, Zuzeng and Guo, Zhanhu and Wu, Zili},
abstractNote = {Here, we report hydrogen generation from the direct splitting of water by photocatalysis is regarded as a promising and renewable solution for the energy crisis. The key to realize this reaction is to find an efficient and robust photocatalyst that ideally makes use of the energy from sunlight. Recently, due to the attractive properties such as appropriate band structure, ultrahigh specific surface area, and more exposed active sites, two-dimensional (2D) photocatalysts have attracted significant attention for photocatalytic water splitting. This Review attempts to summarize recent progress in the fabrication and applications of 2D photocatalysts including graphene-based photocatalysts, 2D oxides, 2D chalcogenides, 2D carbon nitride, and some other emerging 2D materials for water splitting. The construction strategies and characterization techniques for 2D/2D photocatalysts are summarized. Particular attention has been paid to the role of 2D/2D interfaces in these 2D photocatalysts as the interfaces and heterojunctions are critical for facilitating charge separation and improving photocatalysis efficiency. We also critically discuss their stability as photocatalysts for water splitting. Lastly, we highlight the ongoing challenges and opportunities for the future development of 2D photocatalysts in this exciting and still emerging area of research.},
doi = {10.1021/acscatal.7b03437},
journal = {ACS Catalysis},
number = 3,
volume = 8,
place = {United States},
year = {2018},
month = {1}
}

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