溶胶-凝胶法制备ZnFe_2O_4纳米薄膜及其光电催化性能研究  

Preparation of ZnFe_2O_4 nanometer films by sol-gel method and study of its photoelectrocatalytic properties

作　　者：张文丽[1] 侯桂芹[1] 李中秋[1] 

机构地区：[1]河北理工大学材料学院,唐山063009

出　　处：《化工新型材料》2006年第5期25-27,共3页New Chemical Materials

基　　金：河北省自然科学基金资助(502270)

摘　　要：用溶胶-凝胶工艺在导电玻璃上制备出纳米ZnFe2O4薄膜,用X射线衍射仪、扫描电镜对膜的粒径、物相进行了表征,对不同层数的薄膜进行了光电催化性能测试。薄膜对甲基橙溶液的降解结果表明:随着ZnFe2O4薄膜层数的增多,对甲基橙的降解率先增大后减小,且以3层的ZnFe2O4膜片效果最好。当外加正向偏压时,薄膜的光催化性能有一定提高,且随着偏压增大而呈波动性增强。同时,薄膜与极板间的距离对薄膜的光电催化活性也有较大影响。The nano-sized ZnFe2O4 films have been prepared by Sol-gel process on the conducting electricity glass, The structural and surface morphologies of the films were examined by X-ray diffraction, scanning electronic microscopy （SEM） respectively, carried on the photoelectrocatalytic performance test to the film with different layer. The results of methyl orange solution degradation by films indicated that , As the ZnFe2O4 film layer increasing, higher photocatalytic activities can be obtained, and the result of 3 layers was best. When an anodic voltage applied, the photocatalytic activities of the ZnFe204 films become stronger, and as the anodic voltage increasing the degradation present to undulate increasing. At the same time, the distance from films to pole plank also had the effects on the photocatalytic activities of films.

关 键 词：ZnFe2O4薄膜 光催化 光电催化 溶胶-凝胶法 

分 类 号：TB383.1[一般工业技术—材料科学与工程]