期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 9, 页码 8632-8639出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c01300
关键词
CO2 reduction; nanoscale noble metal; semiconductor; H-2 evolution; polyol reduction
资金
- National Natural Science Foundation of China [51902357]
- Start-up Funds for High-Level Talents of Sun Yat-sen University [3800018841209]
- Fundamental Research Funds for the Central Universities, Sun Yat-sen University [19lgpy153]
- Natural Science Foundation of Guangdong Province, China [2019A1515012143]
It is important to effectively use nanoscale noble metal cocatalysts for photocatalysis. A polyol reduction method is a promising method to prepare nanoscale noble metal nanoparticles, but only a few studies about synthesis of noble metal/semiconductor nanoparticle photocatalysts are reported. Its influence on the photocatalytic reaction has not yet been fully studied, especially on electron/hole-induced reactions. Also, the key point to fully realize the potential of the polyol reduction method is unclear. Herein, we systematically studied the effect of polyol reduction from the viewpoint of photocatalysis in different kinds of photocatalytic reactions including electron-induced CO2 reduction, H-2 evolution, and hole-induced pollutant degradation. We find that samples obtained by the polyol method are better than those obtained by the traditional photoreduction method. The reason for enhancement and the chemistry in the formation of nanosized noble metal deposition are fully analyzed. We also discover that in situ deposition is of great significance to obtain a high-efficiency nanoscale noble metal/semiconductor system.
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