Prepared CoSPc/TiO2/float Pearls at Low Temperature and Its Photocatalytic Activity under Visible Light
1.Introduction Presently, titanium dioxide is the most extensively used photocatalyst, as it is easily available, stable to chemic corrosion and photo corrosion, cheap, nontoxic, and high photocatalytic activity. It has been widely employed in the treatment of waste water and air1. However, the width of the band gap of TiO2 (3.2eV), for the photocatalytic activation of TiO2 (anatase), only the radiation having wavelengths shorter than 400 nm can be absorbed by TiO2 giving rise to the generation of electron-hole pairs, during photocatalytic processes photoinduced electrons and holes can easily reduce. In order to overcome this disadvantage, the approaches of compound semiconductor, doping ion, and photosensitive dye were employed to improve absorbency of modifying photocatalyst and extending the range of visible iight2-4, it was important means to use photosensitize for extending the excitated wavelength.
sol-gel method low temperature hydrothermal method CoSPc/TiO2/float pearls
Pengwei Huo Yongsheng Yan Jinan Yang Jingbo Wang
School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China
国际会议
江苏镇江
英文
346-347
2008-10-15（万方平台首次上网日期，不代表论文的发表时间）