S掺杂形式对TiO_2基光催化剂结构和性能的影响  

The Effect of S-Doping Methods on Structure and Activity of TiO_2 Based Photocatalysts

作　　者：王玉萍[1] 曹金丽[1] 彭盘英[1] 

机构地区：[1]南京师范大学化学与环境科学学院,南京210097

出　　处：《无机化学学报》2009年第11期2010-2015,共6页Chinese Journal of Inorganic Chemistry

基　　金：江苏省自然科学基金项目(No.BK2009409);南京师范大学"211工程"三期重点学科建设项目

摘　　要：采用改进的Sol-gel法制备了S-TiO2和TiO2,用1 mol·L^-1的H2SO4对TiO2进行表面修饰制成的SO4^2-/TiO2。采用XRD、IR、UV-Vis、SEM和EDS等技术对催化剂的结构进行了表征,以L酸（1-萘酚-5-磺酸）为目标物,考察了所制备的催化剂的性能.结果表明：S-TiO2的禁带宽度明显降低,并且对400～650 nm区域的可见光都有一定的吸收,其可见光活性和紫外光活性均高于SO4^2-/TiO2和纯TiO2。The S-TiO2 and TiO2 were prepared by the improved sol-gel method, the SO4^2-,/TiO2 was prepared by impregnation of TiO2 with H2SO4 solution（1 mol ·L^-1）. The photocatalysts were characterized by XRD, IR, UV-Vis, SEM, EDS and the photocatalytic activities were evaluated by photodegradation of L-acid（1-naphthol-5-sulfonic acid） under ultraviolet and visible light radiation. The results showed that the band gap of S-TiO2 was reduced obviously, the visible light absorption was extended to 400-650 nm, and the photocatalytic activities were higher than both SO4^2-/TiO2 and pure TiO2 under either ultraviolet radiation or visible light radiation.

关 键 词：硫掺杂 SO42-表面修饰 光催化活性 

分 类 号：O613.51[理学—无机化学] O614.411[理学—化学]