Fe_(2)O_(3)/g-C_(3)N_(4)光催化降解罗丹明B性能研究  

Study on Fe_(2)O_(3)/g-C3N4 photocatalytic degradation of Rhodamine B

作　　者：席清华 黄宜强 陈加祥 聂耳 孙卓[1] XI Qinghua;HUANG Yiqiang;CHEN Jiaxiang;NIE Er;SUN Zhuo(Engineering Research Center for Nanophotonics&Advanced Instruments(Ministry of Education),School of Physics and Electronic Science,Shanghai 200241;East China Normal University-University of Alberta Joint Institute of Advanced Science and Technology,East China Normal University,Shanghai 200241)

机构地区：[1]华东师范大学物理与电子科学学院纳光电集成与先进装备教育部工程研究中心,上海200241 [2]华东师范大学-阿尔伯塔大学先进科学与技术联合研究院,上海200241

出　　处：《华东师范大学学报（自然科学版）》2021年第3期151-160,共10页Journal of East China Normal University(Natural Science)

摘　　要：为了改善g-C_(3)N_(4)比表面积低等缺点,通过高温热聚合法制备了三维(3D)多孔g-C_(3)N_(4),并通过与Fe_(2)O_(3)复合得到Fe_(2)O_(3)/g-C_(3)N_(4)催化剂,提高其可见光响应.Fe_(2)O_(3)/g-C_(3)N_(4)在g-C_(3)N_(4)含量为900 mg、罗丹明B(Rhodamine B,RhB)浓度为20 mg·L^(–1)、H_(2)O_(2)为15 mmol时脱色速率最快,30 min可达到100%.同时Fe_(2)O_(3)/g-C_(3)N_(4)对其他有机物也表现出较好的降解性能,在30 min内对甲基橙(Methyl orange,MO)、四环素(Tetracycline,TC)的降解率分别达到80%和90%.通过活性基团捕获实验探究Fe_(2)O_(3)/g-C_(3)N_(4)的光催化降解机制,实验结果表明h+和·OH在Fe_(2)O_(3)/g-C_(3)N_(4)光催化降解有机物过程中起到主要作用.In order to improve the low specific surface area of g-C_(3)N_(4),three-dimensional(3D)porous g-C_(3)N_(4)was prepared using high temperature thermal polymerization.Fe_(2)O_(3)/g-C_(3)N_(4)catalyst was prepared by compositing the g-C_(3)N_(4)with Fe_(2)O_(3)to improve its visible light response.The decolorization rate of the Fe_(2)O_(3)/g-C_(3)N_(4)catalyst reached 100%in 30 minutes with a g-C_(3)N_(4)content of 900 mg,Rhodamine B(RhB)concentration of 20 mg·L^(–1),and H_(2)O_(2)content of 15 mmol.The Fe_(2)O_(3)/g-C_(3)N_(4)catalyst also demonstrated good performance in degrading other organics;the degradation rates of Methyl orange(MO)and Tetracycline(TC)reached 80%and 90%,respectively,in 30 minutes.This photocatalytic mechanism was explored by active group capture experiments,and the results show that h+and·OH play an important role in the progress of photocatalysis.

关 键 词：g-C_(3)N_(4) 氧化铁 罗丹明B 光催化 

分 类 号：O469[理学—凝聚态物理]