光催化剂g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO的制备及其可见光催化性能研究  

Preparation of g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO composite and its photocatalytic property under visible light

作　　者：顾明敏 罗驹华[2] 孙新凯 江陈烨 陈晓雯 Gu Mingmin;Luo Juhua;Sun Xinkai;Jiang Chenye;Chen Xiaowen(School of Materials Science and Engineering,Changzhou University,Changzhou 213100;School of Materials Science and Engineering,Yancheng Institute of Technology,Yancheng 224051;School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013)

机构地区：[1]常州大学材料科学与工程学院,常州213100 [2]盐城工学院材料科学与工程学院,盐城224051 [3]江苏大学材料学院,镇江212013

出　　处：《化工新型材料》2021年第7期116-121,共6页New Chemical Materials

基　　金：江苏省研究生科研实践创新项目(SJCX18-0886)。

摘　　要：以石墨相氮化碳(g-C_(3)N_(4))为主要催化剂,α-Fe_(2)O_(3)为助催化剂,还原氧化石墨烯(RGO)为电子通道,通过高温煅烧法、水热法和机械搅拌法构筑了g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO三元复合光催化剂,探讨了不同RGO含量时光催化剂在可见光下对有机染料罗丹明B的光催化降解活性,并对催化剂的结构、形貌进行了表征。结果表明,六角柱状的α-Fe_(2)O_(3)负载在片层状的g-C_(3)N_(4)上,周围分散着絮状RGO。降解实验表明,当RGO的含量为5%时,g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO的光催化性能最佳,这主要是由于α-Fe_(2)O_(3)的加入拓宽了材料的光响应范围,另外RGO的加入提供了一个电子通道,促进了材料内光生电子-空穴对的迁移与分离。Using g-C_(3)N_(4) as the main catalyst,α-Fe_(2)O_(3) as the catalyst and RGO as the electron channel,the g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO ternary photocatalyst was constructed by high-temperature calcining,hydrothermal and mechanical stirring methods.The photocatalytic degradation of rhodamine B by photocatalyst with different RGO contents under visible light was investigated,and the structure and morphology of the catalyst were characterized.The results shown that the hexagonal columnarα-Fe_(2)O_(3) was loaded on the lamellar g-C_(3)N_(4),surrounded by floccus RGO.Degradation experiments showed that the catalytic activity of g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO was better than that of g-C_(3)N_(4)/α-Fe_(2)O_(3).When the content of RGO was 5%,the photocatalytic performance of g-C_(3)N_(4)/α-Fe_(2)O_(3)/RGO was the best.This was mainly due to the addition ofα-Fe_(2)O_(3) to broaden the optical response range of the material,in addition,the addition of RGO provided an electronic channel,promoting the migration and separation of photogenerated electronholes in the material.

关 键 词：石墨相氮化碳 还原氧化石墨烯 光催化 罗丹明B 

分 类 号：TQ426[化学工程] TQ599