复合纳米微粒Rh^(3+)/TiO_2/SnO_2的合成、表征及光催化降解4-(2-吡啶偶氮)间苯二酚的研究  

SYNTHESIS,CHARACTERIZATION AND APPLICATION OF COMPLEX NANOMETER PARTICLES OF Rh^(3+)/TiO_2/SnO_2 IN PHOTOCATALYTIC DEGRADATION OF PAR

作　　者：崔玉民[1] 范少华[1] 

机构地区：[1]阜阳师范学院化学系

出　　处：《感光科学与光化学》2003年第3期161-168,共8页Photographic Science and Photochemistry

基　　金：安徽省教育厅自然科学基金资助项目(2002kj235)

摘　　要：采用溶胶 凝胶法制备复合纳米微粒Rh3+/TiO2/SnO2作系列光催化剂,运用BET、XRD等技术对样品进行了表征.讨论了影响污染物4 (2 吡啶偶氮)间苯二酚(PAR)光催化降解率的主要因素,实验结果表明:以Rh3+/TiO2/SnO2为复合光催化剂,当m(TiO2)∶m(SnO2)=56∶44,ω(Rh3+)=2 0%,催化剂用量为1 0g,通入空气的流量为10 0L/min,试液的质量分数为2 0×10-6,pH=7 0时,光照2h,PAR的降解率达到96 2%.Rh3+/TiO2/SnO2 complex nanometer particles with series of photocatalyst were prepared by the solgel process.BET and XRD etc.techniques were used for the characterization of samples.The primary factors which influence the photocatalytic degradation of 4(2pyridinediazoyl)resorcinol were discussed.The results show that the photodegradation rate of 4(2pyridinediazoyl)resorcinol can be reached to 96.2% by using Rh3+/TiO2/SnO2 as complex photocatalyst,with m(TiO2)∶m(SnO2)=56∶44,quantity of Rh3+/TiO2/SnO2=1.0 g,ω(Rh3+)=20%,the rate of flow of air =100 L/min,pH=7.0,mass fraction of 4(2pyridinediazoyl)resorcinol=2.0×10-6,illumination time=2 h.

关 键 词：溶胶-凝胶法 纳米微粒 Rh3+/TiO2/SnO2 4-(2-吡啶偶氮)间苯二酚 光催化降解 铑离子 

分 类 号：O643.3[理学—物理化学]