A novel Ag-BiOBr-rGO photocatalyst for enhanced ketoprofen degradation: Kinetics and mechanisms

被引：51
作者：
Xu, Guanghui [1 ,2 ]
Li, Ming [1 ,2 ]
Wang, Yang [1 ]
Zheng, Na [1 ]
Yang, Li [1 ]
Yu, Hongwen [1 ]
Yu, Yong [1 ]
机构：
[1] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Jilin, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2019年 / 678卷
基金：
中国国家自然科学基金;
关键词：
Photocatalysis; BiOBr; Ag; Reduced graphene oxide; Ketoprofen; MUNICIPAL WASTE-WATER; CO-MODIFIED BIOBR; GRAPHENE OXIDE; HETEROGENEOUS PHOTOCATALYSIS; NANOCOMPOSITES; HYBRID; PHARMACEUTICALS; HETEROJUNCTION; TRANSFORMATION; MICROSPHERES;
D O I：
10.1016/j.scitotenv.2019.04.418
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Ag-BiOBr-reduced graphene oxide (rGO) was synthesized for the first time and used to promote photocatalytic activity under visible-light irradiation. The Ag-BiOBr-rGO showed an excellent photocatalytic activity to degrade ketoprofen compared with other photocatalysts. The composites were comprehensively characterized to explore the mechanisms of the enhancement. Electron Paramagnetic Resonance and scavenger experiments demonstrated that the superoxide radical was the active species. Ketoprofen was completely removed in 120 min. The high photocatalytic activity and stability of the catalyst indicated that the Ag-BiOBr-rGO may have broad application prospects for eliminating pharmaceuticals from wastewater. Four reaction intermediates of ketoprofen were detected by LC-MS/MS and degradation routes were proposed. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：173 / 180
页数：8
相关论文
共 47 条
  • [1] Graphene-based photocatalytic composites
    An, Xiaoqiang
    Yu, Jimmy C.
    [J]. RSC ADVANCES, 2011, 1 (08) : 1426 - 1434
  • [2] Photocatalytic degradation of ibuprofen over BiOCl nanosheets with identification of intermediates
    Arthur, Robert B.
    Bonin, Jesse L.
    Ardill, Luke P.
    Rourk, Ellery J.
    Patterson, Howard H.
    Stemmler, Elizabeth A.
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2018, 358 : 1 - 9
  • [3] Graphene-inorganic nanocomposites
    Bai, Song
    Shen, Xiaoping
    [J]. RSC ADVANCES, 2012, 2 (01) : 64 - 98
  • [4] Contamination of the southern Baltic Sea waters by the residues of selected pharmaceuticals: Method development and field studies
    Borecka, Marta
    Siedlewicz, Grzegorz
    Halinski, Lukasz P.
    Sikora, Kinga
    Pazdro, Ksenia
    Stepnowski, Piotr
    Bialk-Bielinska, Anna
    [J]. MARINE POLLUTION BULLETIN, 2015, 94 (1-2) : 62 - 71
  • [5] Combined use of radiocarbon and stable carbon isotope to constrain the sources and cycling of particulate organic carbon in a large freshwater lake, China
    Chen, Jingan
    Yang, Haiquan
    Zeng, Yan
    Guo, Jianyang
    Song, Yilong
    Ding, Wei
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2018, 625 : 27 - 38
  • [6] Degradation of aqueous ketoprofen by heterogeneous photocatalysis using Bi2S3/TiO2-Montmorillonite nanocomposites under simulated solar irradiation
    Djouadi, Lila
    Khalaf, Hussein
    Boukhatem, Horiya
    Boutoumi, Hocine
    Kezzime, Amina
    Arturo Santaballa, J.
    Canle, Moises
    [J]. APPLIED CLAY SCIENCE, 2018, 166 : 27 - 37
  • [7] Photocatalytic removal of tetrabromobisphenol A by magnetically separable flower-like BiOBr/BiOI/Fe3O4 hybrid nanocomposites under visible-light irradiation
    Gao, Shengwang
    Guo, Changsheng
    Hou, Song
    Wan, Li
    Wang, Qiang
    Lv, Jiapei
    Zhang, Yuan
    Gao, Jianfeng
    Meng, Wei
    Xu, Jian
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2017, 331 : 1 - 12
  • [8] Assessing the photocatalytic transformation of norfloxacin by BiOBr/iron oxides hybrid photocatalyst: Kinetics, intermediates, and influencing factors
    Guo, Changsheng
    Gao, Shengwang
    Lv, Jiapei
    Hou, Song
    Zhang, Yuan
    Xu, Jian
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 205 : 68 - 77
  • [9] Photocatalytic degradation of levofloxacin in aqueous phase using Ag/AgBr/BiOBr microplates under visible light
    Gupta, Girish
    Kaur, Amandeep
    Sinha, A. S. K.
    Kansal, Sushil Kumar
    [J]. MATERIALS RESEARCH BULLETIN, 2017, 88 : 148 - 155
  • [10] Coupling system of Ag/BiOBr photocatalysis and direct contact membrane distillation for complete purification of N-containing dye wastewater
    Hou, Rujing
    Gao, Yuan
    Zhu, Huijuan
    Yang, Guoxiang
    Liu, Wenhua
    Huo, Yuning
    Xie, Zongli
    Li, Hexing
    [J]. CHEMICAL ENGINEERING JOURNAL, 2017, 317 : 386 - 393
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