Effect of Samarium Dopant on Photocatalytic Activity of TiO2 Nano-particle for the Degradation of Reactive Orange 4

摘要：

TiO2 is an ideal material for catalytic technology due to its unique properties.In this paper,Sm3+ doped TiO2 photo-catalyst was developed to improve the efficiency of TiO2 and to use the natural light as irradiation source,which was made from Titanium Tetrabutoxide and Samarium Oxide with the Sol-Gel process.The Sm3+-TiO2 photocatalyst was used to degrade reactive orange 4 (RO4) in Azo Dyes.The effects of solution pH,Sm3+ concentration and catalytic time on the degradation rate of RO4 were studied.The characteristics of the catalyst were analyzed with XRD and TEM.The experimental results show that the catalyst has high activity in the degradation of RO4.The Azo bonds of RO4 are active and easily broken by oxidation.The catalytic activity of the Sm3+ doped catalyst greatly depends on the pH of solution.The catalyst has high photo-catalytic activity at both neutral and alkaline conditions.The degradation mechanism of the Sm3+ doped TiO2 photo-catalyst was also discussed.

关键词： TiO2 Orange 4 Samarium dopant

作者: B.Q.Xiao

作者单位: Civil & Envirement Engineering School,University of Science and Technology,Beijing,China

会议类型: 国际会议

会议名称: XXIV International Mineral Processing Congress(第24届国际矿物加工大会)

会议地点: 北京

会议语种:英文

页码: 4301-4305

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）