摘要
以钛酸四正丁酯、硝酸钆、硫脲为原料,采用溶胶-凝胶法制备了Gd、S掺杂TiO2光催化剂。实验结果表明:少量Gd的掺杂能提高TiO2的光催化效率,掺杂过多Gd对光催化剂有抑制作用。当煅烧温度为650℃,钆、硫的掺杂比分别为0.2%、1.0%时,TiO2光催化剂效果最好,而且其光响应范围也明显拓展。XRD表征表明,当TiO2锐钛矿晶型中掺杂少量金红石相时,Gd、S共掺杂TiO2光催化性能最好。
Gd/S co-doped TiO2 photocatalysts have been prepared with Ti（OC4H9）4,Gd NO3,H2NCSNH2 as raw materials by sol-gel method. The experimental results show that a small amount of Gd doping can improve the photo-catalysis effect of TiO2,but excessive Gd doping will inhibit the photo-catalysis effect. When the calcination temperature is 650 ℃,and gadolinium and sulfur doping ratios are 0.2% and 1%,respectively,the TiO2 photocatalysts have the best effect,and its light response range expands significantly. X-ray diffraction characterization shows that Gd/S co-doped TiO2 has the highest photocatalytic capacity when TiO2 anatase crystal formation is doped with a small amount of rutile
出处
《工业水处理》
CAS
CSCD
北大核心
2015年第7期27-30,共4页
Industrial Water Treatment
基金
国家自然科学基金(51272189)
