化工环保2017，Vol.37Issue(3)：294-299,6.DOI:10.3969/j.issn.1006-1878.2017.03.007
CeO2/三维石墨烯催化臭氧氧化降解刚果红
Degradation of Congo Red by catalytic ozonation on CeO2/3D graphene
摘要
Abstract
The three-dimensional graphene supported CeO2 catalyst (CeO2/3D GN)was prepared by in-situ oxidationreduction method and characterized by XRD,FT-IR,SEM,specific surface area determination and zero charge point measurement.The factors affecting the CeO2/3D GN heterogeneous catalytic ozonation degradation of Congo Red dye in water were studied.The characterization results showed that:The structure of CeO2/3D GN exhibits a interconnected threedimensional network;CeO2 nanoparticles were well dispersed between the graphene sheets;The specific area and near neutral zero charge point (pHzpc)of CeO2/3D GN were 190.89 m2/g and 7.36,respectively.The experimental results showed that:The decolorizaiton rate of Congo Red solution by the CeO2/3D GN catalytic ozonation systyem was 60.56 percentage points higher than that by the ozonation system;During 5 times of CeO2/3D GN reuse,the decolorizaiton rate of Congo Red solution was 96.50％-98.00％;Under the optimum process conditions of ozone flux 20 mg/min,catalyst amount 1.5 g/L,initial solution pH 7.00 and reaction time 15 min,the decolorizaiton rate of Congo Red solution was up to 94.65％.关键词
非均相催化臭氧氧化/三维石墨烯/二氧化铈/原位氧化还原法/刚果红/染料/脱色Key words
heterogeneous catalytic ozonation/three-dimensional graphene/cerium dioxide/in-situ oxidation-reduction method/Congo Red/dye/decolorization分类
资源环境引用本文复制引用
李丽华,马明明,任庆军,陶永康,郭岩..CeO2/三维石墨烯催化臭氧氧化降解刚果红[J].化工环保,2017,37(3):294-299,6.基金项目
国家自然科学基金项目(51308276). （51308276）
