削角双六棱锥多面体氧化铁晶面调控制备及其可见光催化性能(英文)  

Facet-tunable synthesis of truncated hexagonal bipyramid iron oxide microcrystals and their photodegrading activities

作　　者：窦智峰[1] 曹昌燕[2] 陈永[1] 万耿平[1] 王桂振[1] 宋卫国[2] 

机构地区：[1]海南大学材料与化工学院,热带岛屿资源先进材料教育部重点实验室,海南海口570228 [2]中国科学院化学研究所分子纳米结构与纳米技术院重点实验室,北京分子科学国家实验室,北京100190

出　　处：《电子显微学报》2014年第1期25-33,共9页Journal of Chinese Electron Microscopy Society

基　　金：The Project was supported by the State Key Development Program for Basic Research of China(No.2009CB930400);the National Natural Science Foundation of China(Nos.21121063,51362009,51362010)

摘　　要：采用氟离子辅助的乙醇和水混合溶剂热法制备得到了形貌均一的削角双六棱锥氧化铁多面体微米晶体。调节混合溶剂中乙醇的体积分数可实现对该削角双六棱锥多面体氧化铁暴露晶面的精细调控。通过可见光催化降解RhB染料实验发现,利用该法所得的各多面体氧化铁对RhB表现出了良好的可见光催化活性,且各削角双六棱锥多面体氧化铁的光催化活性与其形貌之间表现出典型的性质与结构的依赖构效关系。Uniform truncated hexagonal bipyramid iron oxide microcrystals were successfully synthesized by simple fluoride anion-assisted mixed solvothermal method. Exposed crystal planes of truncated hexagonal bipyramid iron oxide can be regulated finely by varying the volume fraction of ethanol in mixed solvent. The well-defined truncated hexagonal bipyramid micocrystals exhibit excellent and typically morphology-dependent photocatalytic properties on visible-light-induced RhB degradation.

关 键 词：Α-FE2O3 溶剂热合成 削角多面体 晶面调控 光催化 

分 类 号：O614.811[理学—无机化学]