低温固相反应合成Bi_2WO_6粉体及其可见光光催化性能  

Low-temperature Solid-state Synthesis of Bi_2WO_6 Powders and Its Visible-light Photocatalytic Activity

作　　者：周林[1] 晋传贵[1] 余意[1] 池方丽 吕耀辉[1] 冉松林[1] ZHOU Lin JIN Chuan-gui YU Yi CHI Fang-li LV Yao-hui RAN Song-lin(School of Materials Science and Engineering, Anhui University of Technology, Ma＇anshan, Anhui 243002, Chin)

机构地区：[1]安徽工业大学材料科学与工程学院,安徽马鞍山243002

出　　处：《过程工程学报》2016年第5期895-900,共6页The Chinese Journal of Process Engineering

基　　金：安徽省教育厅自然科学研究重点基金资助项目(编号:KJ2015A085);安徽省大学生创新创业训练计划资助项目(编号:201510360144)

摘　　要：以Bi(NO3)3·5H2O和Na2WO4·2H2O为原料,采用固相法直接合成Bi2WO6粉体,研究了反应温度和保温时间对产物物相、形貌及可见光光催化性能的影响.结果表明,350℃下保温2 h所得粉体含少量Bi2O3和Na2W4O13杂质,但光催化性能最好,可见光照射90 min对0.01 mmol/L Rh B溶液的降解率达95%,且经5次循环后光催化活性和化学稳定性良好.Bi2WO6 powders were synthesized by a direct solid-state reaction between Bi（NO3）3·5H2O and Na2WO4·2H2O. The effects of calcining temperature and time on the phase composition, morphology and photocatalytic activity under the visible light irradiation were investigated. The results indicated that the powders synthesized at 350 ℃ for 2 h contained small amount of Bi2O3 and Na2W4O13 phase as impurities, but exhibited the highest photocatalytic activity. The as-synthesized powders could degrade 0.01 mmol/L RhB solution by 95% after irradiation under visible light for 90 rain. In addition, the as-synthesized powders still remained excellent photocatalytic activitv and chemical stabilitv even after 5 times eveling tests

关 键 词：固相法 Bi2WO6 光催化 罗丹明B 

分 类 号：TG174[金属学及工艺—金属表面处理]