Preparation of C doped TiO2 photocatalysts and their photocataiytic reduction of carbon dioxide
TiO2 doped with C was obtained by way of immersion and calcinations method by using citric acid (CA) as dopant material., and characterized by using XPS、XRD, UV-Vis, FT-IR and SPS. The results of analysis and characterization showed that C substituted partial Ti atoms in the lattice of TiO2 and formed Ti-O-C structure. The photocataiytic properties of C-TiO2 photocatalysts had been evidently improved as a result of a noticeable shift to visible region and the enhancement of the charge separation efficiency. The doped carbon lowers the band gap and expends the absorption of visible light region. CO2 was photocatalytically reduced to form HCOOH by the best C-TiO2-3/l-600nanoparticles under the irradiation of the simulated daylight lamp. Methanoic acid yield may achieve 2633.98umol/g-Cat when irradiation time is six hours.
Li-mei Xue Feng-hua Zhang Hui-juan Fan Xue-feng Bai
College of Materials Science and chemical engineering, Harbin Engineering University,harbin 150027, School of Resource and Environment, Heilongjiang Science and Technology University,harbin 150027, Ch Institute of Petrochemistry, Heilongjiang Academy og Sciences, harbin 150040, China College of Materials Science and chemical engineering, Harbin Engineering University,harbin 150027,
国际会议
哈尔滨
英文
1842-1846
2011-03-26（万方平台首次上网日期，不代表论文的发表时间）