摘要
采用溶胶凝胶法制备了不同浓度、不同煅烧温度下Pr3+掺杂TiO2光催化剂。对所制样品进行XRD、FT-IR、SEM表征,通过降解碱性品红溶液来测试样品的光催化性能。结果表明稀土Pr3+掺杂TiO2能细化晶粒,提高热稳定性;在400℃下煅烧,n(Pr3+)/n(TiO2)=0.2%的催化剂,加入氧化剂1mL30%的双氧水,可以抑制电子和空穴复合,提高催化性能,在无灯源照射条件下,催化时间120min,降解率达到100%。
The Pr^3＋/TiO2 photocatalyst with different amounts of doped Pr3＋and calcination temperatures are synthesized by sol-gel method and characterized by XRD,FT-IR and SEM.Basic fuchsin experiment is chosen to evaluate photocatalyst activity.The results show that the synthesized samples are anatase TiO2 with the Pr^3＋doped.While it has been found that rare earth interrupts the transformation from anatase to rutile.Photocatlytic experiment results show when the sample is calcined at 400 ℃,containing 0.2%Pr^3＋/TiO2 and 1mL 30%H2O2,without lighting,and t=120min,the degradation rate is 100%
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第3期149-153,共5页
Journal of Chongqing University
基金
国家自然科学基金资助项目(21364007)~~
