CS/La_(0.7)Ca_(0.3)Fe_(0.25)Co_(0.75)O_3复合纳米颗粒的制备及光催化性能研究  

Preparation and photocatalytic activity of La_(0.7)Ca_(0.3)Fe_(0.25)Co_(0.75)O_3/CS composite nanoparticles

作　　者：储艳文[1] 林生岭[1] 何金芳[1] 郭寅丹[1] 龙丹[1] 万勇[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,镇江212003

出　　处：《化学研究与应用》2011年第4期408-412,共5页Chemical Research and Application

基　　金：国家自然科学基金(20704020)资助;江苏科技大学博士启动基金(2006CL0035)资助

摘　　要：采用甘氨酸-硝酸盐燃烧法成功的制备了La0.7Ca0.3Fe0.25Co0.75O3钙钛矿型复合氧化物,将钙钛矿La0.7Ca0.3Fe0.25Co0.75O3与壳聚糖(CS)共混交联制备出一种新型的光催化剂,通过XRD、SEM、FT-IR对催化剂的结构进行了表征。以酸性橙为对象,高压汞灯紫外光为光源,研究了一些影响因素,如染料的初始浓度以及催化剂的投放量的改变对光催化剂光降解酸性橙的效率的影响。结果表明:制得的光催化剂能够显著地降解酸性橙,脱色率高达99%。The composite oxide of La0.7Ca0.3Fe0.25Co0.75O3 nanocrystalline has been synthesized by glycine-nitrate combustion method,La0.7Ca0.3Fe0.25Co0.75O3 nanoparticles were immobilized on CS（chitosan） using cross-linking processing.The resulting materials were characterized by XRD,SEM,FT-IR techniques respectively.The effects of some factors such as the initial concentration of dye and catalyst content were studied by the degradation of acid orange dye under UV high pressure mercury lamp irradiation.The results showed that the catalyst could degrade acid orange dye effectively,and the decolorization rate can reach 99%.

关 键 词：La0.7Ca0.3Fe0.25Co0.75O3 壳聚糖 光催化 酸性橙 

分 类 号：O643.3[理学—物理化学]