Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 688, Issue -, Pages 37-43Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.06.260
Keywords
Graphene foam; CdS nanowires; Photo-electrochemical; Photo-corrosion
Categories
Funding
- Visiting Scholar Foundation of Key Laboratory of Optoelectronic Technology & Systems (Chongqing University)
- National High Technology Research and Development Program of China [2015AA034801]
- National Natural Science Foundation of China [11404329, 61504148, 5140229, 61405021]
- Specialized Research Fund for the Doctoral Program of Higher Education [20120191120021]
- Natural Science Foundation of Chongqing, China [cstc2014jcyjA40045, CSTC2014jcyjjq50004]
- CAS Western Light Program
- Ministry of Education
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A photo-electrochemical photo-anode of CdS-modified graphene foam (GF) was prepared by chemical vapor deposition method. The interconnected 3D scaffold network of the as-prepared CdS-modified GF composite not only facilitates the separation of photo-generated charge carrier, but also provides a direct pathway for charge transport in the conductive network, resulting in the enhanced photo-current response. Experimental results confirm that the deposition of the CdS nanowires (NWs) makes a major contribution to improving the photo-current density of as-prepared CdS NWs/GF photo-anode, which reaches a high value of 55 mA/cm(2) with clear light-on and - off. Meanwhile, the PEC reaction leads to the photo-corrosion of CdS NWs/GF photo-anode, resulting in the prominent decrease of photo-current density during the photo-electrochemical reactions. Such a CdS-modified 3D GF photo-anode with impressive photovoltaic properties provides a promising platform for photo-electrochemical applications. (C) 2016 Elsevier B.V. All rights reserved.
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