分级结构的α-FeOOH立方形催化剂的制备及光降解性能研究  

Preparation of Hierarchicalα-FeOOH Cube Catalysts for Photocatalytic Degradation

作　　者：刘世君 苏秋成[1] LIU Shijun;SU Qiucheng(Guangzhou Institute of Energy Conversion,People s Republic of China,Guangzhou 510640,China)

机构地区：[1]中国科学院广州能源研究所,广州510640

出　　处：《材料导报》2022年第S02期29-31,共3页Materials Reports

基　　金：中国科学院广州生命科学大型仪器区域中心开放课题(GZQY2020)。

摘　　要：本工作采用水热法通过调控反应时间制备了不同形貌和结构的催化剂,并探讨了催化剂的形成机理。研究发现由纺锤形结构自组装而成的立方形α-FeOOH呈现出较稳定和较高的光降解甲基橙效率,但是由于立方形和汉堡形Fe_(2)O_(3)催化剂呈现出较大的尺寸,进而呈现出较少的活性位,影响光生载流子的传递,促使电子-空穴复合严重,导致Fe_(2)O_(3)呈现出较差的光降解效果。In this work,catalysts with different morphologies and structures were synthesized by hydrothermal method by adjusting the reaction time,and the formation mechanism of catalysts was discussed.It was found that the cubeα-FeOOH was self-assembled from the spindles,and it showed relatively stable and high photocatalytic degradation efficiency of methyl orange.However,cube Fe_(2)O_(3)and burger Fe_(2)O_(3)catalysts displayed fewer active sites because of the large size,thus cannot facilitate the transmission of photo carriers,and then promote the recombination between electrons and holes.It resulted in a poor photo degradation effect through Fe_(2)O_(3)catalysts.

关 键 词：水热法 光催化降解 立方形α-FeOOH 催化剂 

分 类 号：TB321[一般工业技术—材料科学与工程] O643.3[理学—物理化学]