期刊
ACS APPLIED MATERIALS & INTERFACES
卷 3, 期 5, 页码 1757-1764出版社
AMER CHEMICAL SOC
DOI: 10.1021/am200248q
关键词
TiO2; carbon modified; vanadium doped; photocatalytic activity
资金
- National Nature Science Foundation of China [20773039, 20977030]
- National Basic Research Program of China (973 Program) [2007CB613301, 2010CB732306]
- Science and Technology Commission of Shanghai Municipality [10520709900, 10JC1403900]
- Fundamental Research Funds for the Central Universities
Carbon-modified vanadium-doped TiO2 was successfully prepared with the intention of enhancing the visible-light photocatalytic performance by expanding the absorption in the visible-light region and improving the quantum efficiency of the photocatalytic reaction. The physicochemical properties of the catalysts were characterized by XRD, Raman, TEM, XPS, UV-vis diffuse reflectance spectra. The result indicated that some vanadium ions substituted for Ti4+ in the lattice of TiO2, whereas all the carbon was modified on the surface of catalysts in the form of stable graphite-like carbonaceous species. Compared with vanadium doped TiO2 sample and carbon modified TiO2 sample, the 0.32C-0.5%V-TiO2 photocatalyst exhibited excellent visible light activity and the synergistic effects of vanadium and carbon was responsible for improving the photocatalytic activity.
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