The efficient degradation of organic pollutants in an aqueous environment under visible light irradiation by persulfate catalytically activated with kaolin-Fe2O3

被引:19
|
作者
He, Qianqian [1 ]
Xie, Chunsheng [2 ]
Gan, Dexin [1 ]
Xiao, Chun [2 ]
机构
[1] Hunan Agr Univ, Sch Landscape Architecture & Art, Changsha 410000, Hunan, Peoples R China
[2] Zhaoqing Univ, Coll Environm & Chem Engn, Zhaoqing 526061, Peoples R China
关键词
HETEROGENEOUS CATALYSTS; PHOTOCATALYTIC ACTIVITY; RHODAMINE-B; FENTON; OXIDATION; MECHANISM; NANOSHEETS; KINETICS; SULFADIAZINE; CONTAMINANTS;
D O I
10.1039/c9ra09253f
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In recent years, persulfate (PS) has been widely studied as a promising oxidant. In this work, a new K-Fe2O3 catalyst was synthesized via a facile impregnation method. K-Fe2O3 samples were utilized as heterogeneous photocatalysts for the degradation of aquatic organic pollutants (rhodamine, RhB, and ciprofloxacin, CIP). The catalysts showed excellent catalytic activity in the presence of PS under the irradiation of visible light, owing to the generation of SO4- and .OH active radicals. The degradation ratio and COD removal ratio for RhB were 99.8% and 88.3%. More importantly, the system retained a high degradation activity for RhB within a wide operating pH range of 2.9-10. The results of cycling degradation experiments confirmed that the K-Fe2O3 catalyst was stable and recoverable. Large-scale experiments for treating dye wastewater under irradiation by natural sunlight were carried out, showing that this study can provide a new perspective for the treatment of wastewater.
引用
收藏
页码:43 / 52
页数:10
相关论文
共 50 条
  • [31] Efficient H2O2 oxidation of organic pollutants catalyzed by supported iron sulfophenylporphyrin under visible light irradiation
    Huang, YP
    Li, J
    Ma, WH
    Cheng, MM
    Zhao, JC
    Yu, JC
    JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (22): : 7263 - 7270
  • [32] Visible light activation of persulfate by α-Fe2O3/PDINH photocatalyst for sulfamethoxazole degradation
    Jia, Yanyan
    Duan, Liang
    Li, Haisheng
    Zhang, Chang
    Gao, Qiusheng
    Zhang, Hengliang
    Li, Shilong
    Li, Mingyue
    SEPARATION AND PURIFICATION TECHNOLOGY, 2025, 354
  • [33] Evaluation of activated persulfate under real solar light for degradation of organic pollutants: Kinetics, mechanism, and ecotoxicity
    Gupta, Smita
    Raikar, Laxman G.
    Kokate, Santosh
    Gandhi, Jemi
    Prakash, Halan
    JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2023, 11 (05):
  • [34] New BiOXs/TiO2 heterojunction photocatalyst towards efficient degradation of organic pollutants under visible-light irradiation
    Li Lun
    Song Jinling
    Wang Baoying
    Duan Chenglin
    Wang Ruifen
    Zhang Bangwen
    MICRO & NANO LETTERS, 2019, 14 (08) : 911 - 914
  • [35] Efficient degradation of organic pollutants with a sewage sludge support and in situ doped TiO2 under visible light irradiation conditions
    Yuan, Shi-Jie
    Li, Xiao-Wei
    Dai, Xiao-Hu
    RSC ADVANCES, 2014, 4 (105): : 61036 - 61044
  • [36] High flux Fe/activated carbon membranes for efficient degradation of organic pollutants in water by activating sodium persulfate
    Chen, Long
    Ren, Xiaomin
    Li, Yanxiang
    Hu, Dan
    Feng, Xudong
    Liu, Ye
    Zhao, Juanjuan
    SEPARATION AND PURIFICATION TECHNOLOGY, 2022, 285
  • [37] Mg doped CuO-Fe2O3 composites activated by persulfate as highly active heterogeneous catalysts for the degradation of organic pollutants
    Sun, Mengying
    Lei, Yu
    Cheng, Hao
    Ma, Jianfeng
    Qin, Yong
    Kong, Yong
    Komarneni, Sridhar
    JOURNAL OF ALLOYS AND COMPOUNDS, 2020, 825
  • [38] Efficient degradation of organic pollutants by using dioxygen activated by resin-exchanged Iron(II) bipyridine under visible irradiation
    Ma, WH
    Li, J
    Tao, X
    He, J
    Xu, YM
    Yu, JC
    Zhao, JC
    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (09) : 1029 - +
  • [39] Photocatalytic Degradation of Organic Pollutants by Co-Doped TiO2 Under Visible Light Irradiation
    Chen, Chuncheng
    Ma, Wanhong
    Zhao, Jincai
    CURRENT ORGANIC CHEMISTRY, 2010, 14 (07) : 630 - 644
  • [40] Fe2O3/ZnO/ZnFe2O4 composites for the efficient photocatalytic degradation of organic dyes under visible light
    Li, Xiaojuan
    Jin, Bo
    Huang, Jingwen
    Zhang, Qingchun
    Peng, Rufang
    Chu, Shijin
    SOLID STATE SCIENCES, 2018, 80 : 6 - 14