A New Approach toward Carbon-Modified Vanadium-Doped Titanium Dioxide Photocatalysts

被引：128
作者：
Liu, Haibei
Wu, Yongmei
Zhang, Jinlong [1 ]
机构：
[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China
来源：
ACS APPLIED MATERIALS & INTERFACES | 2011年 / 3卷 / 05期
关键词：
TiO2; carbon modified; vanadium doped; photocatalytic activity; MODIFIED TIO2 PHOTOCATALYST; VISIBLE-LIGHT; LOW-TEMPERATURE; DEGRADATION; NITROGEN; NANOPARTICLES; PERFORMANCE; OXIDATION; WATER; DECOMPOSITION;
D O I：
10.1021/am200248q
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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.
引用
收藏
页码：1757 / 1764
页数：8
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