Preparation Conditions and Properties of Porous SiO2-doped TiO2 Photocatalyst

摘要：

A porous SiO2-doped TiO2 photocatalyst was prepared through co-sol-gel method used for photocatalytic degradation of methyl orange. PEG 1000 was used as a template. Photocatalytic degradation was conducted after adsorption equilibrium to identify the contribution of both adsorption and photocatalytic degradation. While PEG addition ranged from 0.25 g to 1.0 g, the optimum addition amount was at 0.5 g. The degradation rate increased with increasing calcination temperature in the range from 400 to 500 ° C, and then it decreased with still increasing temperature. The photocatalyst calcinated at 500 °C for 4 h could degrade 29.2％ of the initial methyl orange in 30 min. Nearly 96.5％ of decoloration of the initial methyl orange was removed in 100 min under UV light irradiation with the existence of the porous SiO2-doped TiO2.

关键词： TiO2 SiO2 Photocatalysis Composite

作者: Hong Li Qian Li Wenjie Zhang

作者单位: School of Environmental and Chemical Engineering,Shenyang Ligong University,Shenyang 110159,China

会议类型: 国际会议

会议名称: the 2011 International Conference on Key Engineering Materials(ICKEM 2011)(2011关键工程材料国际会议)

会议地点: 三亚

会议语种:英文

页码: 40-44

在线出版日期: 2011-03-25（万方平台首次上网日期，不代表论文的发表时间）