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];
[4];
[1];
[5];
[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
- Harbin Inst. of Technology, Shenzhen (China). Shenzhen Graduate School, State Key Lab. of Advanced Welding and Joining
- Peking Univ., Beijing (China). School of Advanced Materials
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source II (NSLS-II)
- 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. https://doi.org/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. https://doi.org/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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Figures / Tables:
Scheme 1: Schematic illustration of the preparation of CdS/CoO heterostructures. Hydrolysis of 2MIM in the presence of water produces a strong local alkaline environment at the CdS surface, and hierarchical Co(OH)2 nanosheets can be produced with the addition of Co 2+ ions. Subsequent calcination of the CdS/Co(OH)2 nanocomposites leads tomore »
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Works referencing / citing this record:
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