Characterization and Photocatalytic Activity of KSr_2Nb_5O_(15) with Tungsten Bronze Structure  

作　　者：张高科 

机构地区：[1]School of Resources and Environmental Engineering,Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2009年第5期742-746,共5页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.50472017);Program for New Century Excellent Talents in University(No.NCET05-0662);Wuhan University of Technology

摘　　要：Tungsten bronze （TB） type potassium strontium niobate KSr2Nb5O15 was prepared by solid-state reaction method, and was characterized by X-ray diffraction （XRD）,scanning electron microscopy （SEM） and UV-vis diffuse spectrum. The photocatalyst shows high photocatalytic activity of photodegrading acid red G. The effects of photocatalyst dosage and initial concentration of acid red G on the photodegradation process were studied. The kinetics of photocatalytic degradation of acid red G by KSr2Nb5O15 catalyst follows the first order reaction.Tungsten bronze （TB） type potassium strontium niobate KSr2Nb5O15 was prepared by solid-state reaction method, and was characterized by X-ray diffraction （XRD）,scanning electron microscopy （SEM） and UV-vis diffuse spectrum. The photocatalyst shows high photocatalytic activity of photodegrading acid red G. The effects of photocatalyst dosage and initial concentration of acid red G on the photodegradation process were studied. The kinetics of photocatalytic degradation of acid red G by KSr2Nb5O15 catalyst follows the first order reaction.

关 键 词：potassium strontium niobate PHOTOCATALYST solid state reaction tungsten bronze acid red G 

分 类 号：X791[环境科学与工程—环境工程]