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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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
