期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 46, 页码 20313-20319出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp54304h
关键词
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资金
- Nippon Sheet Glass Foundation for Materials Science and Engineering
- Sumitomo Foundation
- [24550239]
- Grants-in-Aid for Scientific Research [24550239] Funding Source: KAKEN
This study first presents a TiO2-based eco-catalyst working in the dark and under visible-light irradiation for the degradation of environmental organic pollutants. Molecular scale cobalt(III) oxide clusters are formed on the surface of highly active anatase TiO2 nanoparticles (Co2O3-TiO2) by the chemisorption-calcination cycle method. Co2O3-TiO2 exhibits very high visible-light activities for the degradation of 2-naphthol and formic acid used as model organic pollutants. Unprecedented thermocatalytic activity is concomitantly endowed on TiO2 by the surface modification. Prolonging reaction time in the Co2O3-TiO2 photo-and thermo-catalyzed reactions leads to the decomposition of 2-naphthol and formic acid to CO2. The essential action mechanisms of the Co2O3 clusters in the photocatalysis and thermocatalysis of Co2O3-TiO2 were discussed on the basis of spectroscopic and electrochemical data.
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