不同金属离子掺杂对TiO_2选择性氧化光催化活性的影响  

Study on Selective Oxidation of TiO_2 Photocatalytic Activity

作　　者：于新婕[1] 陈前林[1] 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550003

出　　处：《广州化工》2011年第19期53-55,共3页GuangZhou Chemical Industry

摘　　要：采用溶胶-凝胶法制备二氧化钛光催化剂,通过在基材中加入金属离子,对TiO2进行改性,研究以30 mg/L甲基橙与100 mg/L重铬酸钾为降解模型,掺杂不同价态离子对催化剂选择性氧化光催化性能的影响。实验结果表明:掺入低价离子的催化剂的氧化性提高并且还原性得到有效的抑制,有较强的选择性氧化光催化活性。Using sol-gel method for preparation of titanium dioxide photocatalyst by adding metal ion in the base material,TiO2 was modified,and in 30 mg/L methyl orange and 100 mg/L potassium dichromate for degradation model,doped with different valence ions on catalytic performance of catalysts for selective oxidation of light that were studied.Experimental results showed that the oxidation of mixed catalyst with low ions was increased there the reduction was effectively inhibited,with strong selective oxide photocatalytic activity.

关 键 词：二氧化钛 选择性 光催化氧化 掺杂 

分 类 号：O643.36[理学—物理化学]