华东师范大学学报（自然科学版） >

2021 , Vol. 2021 >Issue 3: 151 - 160

DOI: https://doi.org/10.3969/j.issn.1000-5641.2021.03.015

化学化工

Fe2O3/g-C3N4光催化降解罗丹明B性能研究

  • 席清华 ,
  • 黄宜强 ,
  • 陈加祥 ,
  • 聂耳 ,
  • 孙卓
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  • 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

收稿日期: 2020-08-28

  网络出版日期: 2021-05-26

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Study on Fe2O3/g-C3N4 photocatalytic degradation of Rhodamine B

  • Qinghua XI ,
  • Yiqiang HUANG ,
  • Jiaxiang CHEN ,
  • Er NIE ,
  • Zhuo SUN
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  • 1. Engineering Research Center for Nanophotonics & Advanced Instruments (Ministry of Education), School of Physics and Electronic Science, Shanghai　200241
    2. East China Normal University-University of Alberta Joint Institute of Advanced Science and Technology, East China Normal University, Shanghai　200241

Received date: 2020-08-28

  Online published: 2021-05-26

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摘要

为了改善g-C3N4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-C3N4, 并通过与Fe2O3复合得到Fe2O3/g-C3N4催化剂, 提高其可见光响应. Fe2O3/g-C3N4在g-C3N4含量为900 mg、罗丹明B(Rhodamine B, RhB)浓度为20 mg·L–1、H2O2为15 mmol时脱色速率最快, 30 min可达到100%. 同时Fe2O3/g-C3N4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Fe2O3/g-C3N4的光催化降解机制, 实验结果表明h+和·OH在Fe2O3/g-C3N4光催化降解有机物过程中起到主要作用.

关键词： g-C3N4; 氧化铁; 罗丹明B; 光催化

本文引用格式

席清华 , 黄宜强 , 陈加祥 , 聂耳 , 孙卓 . Fe2O3/g-C3N4光催化降解罗丹明B性能研究[J]. 华东师范大学学报（自然科学版）, 2021 , 2021(3) : 151 -160 . DOI: 10.3969/j.issn.1000-5641.2021.03.015

Abstract

In order to improve the low specific surface area of g-C3N4, three-dimensional (3D) porous g-C3N4 was prepared using high temperature thermal polymerization. Fe2O3/g-C3N4 catalyst was prepared by compositing the g-C3N4 with Fe2O3 to improve its visible light response. The decolorization rate of the Fe2O3/g-C3N4 catalyst reached 100% in 30 minutes with a g-C3N4 content of 900 mg, Rhodamine B (RhB) concentration of 20 mg·L–1, and H2O2 content of 15 mmol. The Fe2O3/g-C3N4 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.

Key words： g-C3N4; Fe2O3; Rhodamine B(RhB); photocatalytic

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