期刊
CATALYSIS TODAY
卷 335, 期 -, 页码 423-428出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2019.01.034
关键词
Graphitic carbon nitride; Solvothermal process; Layered double hydroxides; Co-catalyst; Photoelectrochemical water oxidation
资金
- National Natural Science Foundation of China [51602153, 11575084, 21703065]
- Natural Science Foundation of Jiangsu Province [BK20160795]
- Fundamental Research Funds for the Central Universities [NE2018104]
- Jiangsu University of Science and Technology Doctoral Fund [635061308]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- China Scholarship Council
In the present work, we investigate the graphic carbon nitride (g-CN) film as photoanode to catalyze the photoelectrochemical (PEC) water oxidation and study the influence of NiCo layered double hydroxides (NiCo-LDH) layer on the performance. The g-CN film with good quality and intimate contact with substrate was in-situ prepared via solvothermal process and subsequent calcination. NiCo-LDH is further decorated on the g-CN film through cathodic electrochemical deposition to work as co-catalyst. The g-CN/NiCo-LDH composite with optimized NiCo-LDH loading amount exhibits a photocurrent of 11.8 mu A cm(-2) at 0.6 V vs. SCE, which is 2.8 times of bare g-CN. Characterizations and performance tests demonstrate that NiCo-LDH promoted reaction kinetics and charge separation. The results provide an effective strategy to improve the photoelectrochemical water oxidation performance of g-CN through NiCo-LDH co-catalyst. This work to investigate the photoelectrochemical water oxidation is of great significance toward explore the overall water splitting on the g-CN film.
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