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Title: Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution

Abstract

In order to further enhance the performance of photocatalysts, cocatalysts are used to accelerate the photocatalytic reactions. Herein, ultrafine cobalt oxide (CoO) nanoparticles are synthesized through a novel bottom-up strategy and explored as an efficient non-noble cocatalyst to dramatically promote the photocatalytic hydrogen evolution rate of CdS nanorods. CdS/CoO heterostructures, consisting of highly dispersed 3–5 nm CoO nanoparticles anchored on the CdS nanorods, can provide a high photocatalytic hydrogen evolution rate of 6.45 mmol g-1 h-1 (~36 times higher than that of bare CdS nanorods) in the visible-light region (>420 nm). Combined X-ray photoelectron spectroscopy and X-ray absorption near edge spectroscopy analyses suggest Co–S bond formation between CoO and CdS, which guarantees efficient migration and separation of photogenerated charge carriers. This work provides a new avenue for adopting CoO as an effective cocatalyst for enhanced photocatalytic hydrogen production in the visible-light region.

Authors:
 [1];  [2];  [1];  [3]; ORCiD logo [1];  [4]; ORCiD logo [4];  [4]; ORCiD logo [1]; ORCiD logo [5]; ORCiD logo [1]
  1. Harbin Inst. of Technology, Harbin (China). MIIT Key Lab. of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering
  2. Harbin Inst. of Technology, Shenzhen (China). Shenzhen Graduate School, State Key Lab. of Advanced Welding and Joining
  3. Peking Univ., Beijing (China). School of Advanced Materials
  4. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
  5. Harbin Inst. of Technology, Harbin (China). Academy of Fundamental and Interdisciplinary Sciences
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1570663
Alternate Identifier(s):
OSTI ID: 1557019
Report Number(s):
BNL-212143-2019-JAAM
Journal ID: ISSN 2040-3364; NANOHL
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 11; Journal Issue: 33; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Chu, Jiayu, Sun, Guoji, Han, Xijiang, Chen, Xin, Wang, Jiajun, Hu, Wen, Waluyo, Iradwikanari, Hunt, Adrian, Du, Yunchen, Song, Bo, and Xu, Ping. Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution. United States: N. p., 2019. Web. doi:10.1039/C9NR05086H.
Chu, Jiayu, Sun, Guoji, Han, Xijiang, Chen, Xin, Wang, Jiajun, Hu, Wen, Waluyo, Iradwikanari, Hunt, Adrian, Du, Yunchen, Song, Bo, & Xu, Ping. Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution. United States. doi:10.1039/C9NR05086H.
Chu, Jiayu, Sun, Guoji, Han, Xijiang, Chen, Xin, Wang, Jiajun, Hu, Wen, Waluyo, Iradwikanari, Hunt, Adrian, Du, Yunchen, Song, Bo, and Xu, Ping. Mon . "Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution". United States. doi:10.1039/C9NR05086H. https://www.osti.gov/servlets/purl/1570663.
@article{osti_1570663,
title = {Ultrafine CoO nanoparticles as an efficient cocatalyst for enhanced photocatalytic hydrogen evolution},
author = {Chu, Jiayu and Sun, Guoji and Han, Xijiang and Chen, Xin and Wang, Jiajun and Hu, Wen and Waluyo, Iradwikanari and Hunt, Adrian and Du, Yunchen and Song, Bo and Xu, Ping},
abstractNote = {In order to further enhance the performance of photocatalysts, cocatalysts are used to accelerate the photocatalytic reactions. Herein, ultrafine cobalt oxide (CoO) nanoparticles are synthesized through a novel bottom-up strategy and explored as an efficient non-noble cocatalyst to dramatically promote the photocatalytic hydrogen evolution rate of CdS nanorods. CdS/CoO heterostructures, consisting of highly dispersed 3–5 nm CoO nanoparticles anchored on the CdS nanorods, can provide a high photocatalytic hydrogen evolution rate of 6.45 mmol g-1 h-1 (~36 times higher than that of bare CdS nanorods) in the visible-light region (>420 nm). Combined X-ray photoelectron spectroscopy and X-ray absorption near edge spectroscopy analyses suggest Co–S bond formation between CoO and CdS, which guarantees efficient migration and separation of photogenerated charge carriers. This work provides a new avenue for adopting CoO as an effective cocatalyst for enhanced photocatalytic hydrogen production in the visible-light region.},
doi = {10.1039/C9NR05086H},
journal = {Nanoscale},
number = 33,
volume = 11,
place = {United States},
year = {2019},
month = {8}
}

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    Works referencing / citing this record:

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