Low-temperature synthesis of graphene/Bi2Fe4O9 composite for synergistic adsorption-photocatalytic degradation of hydrophobic pollutant under solar irradiation

被引:111
|
作者
Hu, Zhong-Ting [1 ]
Liu, Jincheng [2 ]
Yan, Xiaoli [1 ,2 ]
Oh, Wen-Da [1 ,2 ]
Lim, Teik-Thye [1 ,2 ]
机构
[1] Nanyang Technol Univ, Sch Civil & Environm Engn, Div Environm & Water Resources Engn, Singapore 639798, Singapore
[2] Nanyang Technol Univ, Nanyang Environm & Water Res Inst, Singapore 637141, Singapore
关键词
Bismuth ferrite; Graphene; Low-temperature; Photocatalysis; Solar simulator; MICROWAVE HYDROTHERMAL SYNTHESIS; BISPHENOL-A; LIGHT; TIO2; OXIDE; WATER; REDUCTION; FILMS; MICROSTRUCTURE; NANOCOMPOSITES;
D O I
10.1016/j.cej.2014.10.037
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
A graphene-supported bismuth ferrite (BF0249/rG04.5) that exhibits a highly effective solar photocatalysis was synthesized via a facile co-precipitation method at a low temperature of 95 C. BF0249/rG04.5 has a 2D composite structure and the deposited bismuth ferrite (BF0249) nanoparticles have an average size of 5 nm. Fourier transform-infrared (FT-IR) analysis shows that the resulting BF0249/rG04.5 catalysts are chemically bonded composites possibly with Fe-O-C and/or Bi-O-C bonds. Photoluminescence evaluation indicates that rGO can effectively suppress the recombination of e(-)/h(+) pairs in BF0249. The adsorption and photocatalytic performance was evaluated using a hydrophobic pollutant (bisphenol A). The adsorption capacity of BPA on BF0249/rG04.5 is 4 mg g(-1), which is ca. 5.5 times higher than that of pristine BF0249. Under visible-light region of full solar spectrum, BF0249/rG04.5 shows a great synergistic adsorption-photocatalytic degradation efficiency of 62% after 3 h (similar to 2 times higher than that of BF0249) and the corresponding mineralization is 47%. The predominant reactive oxygen species (ROS) for BPA degradation was identified to be the O-2(center dot-). When BPA solution containing BF0249/rG04.5 was exposed to the full solar spectrum, 76% and 80% of BPA can be removed at pH 6.5 and 5, respectively, in 3 h. The presence of bicarbonate induces moderate inhibitory effect on the photocatalytic degradation (PCD) of BPA by BF0249/rG04.5 while sulfate, chloride or nitrate exhibit only minor effect. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:1022 / 1032
页数:11
相关论文
共 50 条
  • [31] Preparation and Characterization of Bi2Fe4O9/Ag3PO4 Composite Photocatalyst for Degradation of EE2
    Ma, Min
    Wu, Shenglan
    Liu, Jie
    Chen, Yu
    Jiang, Xiaomei
    Pi, Xiaolin
    Li, Huiying
    Li, Xiaomei
    Jiang, Fengzhi
    CHEMISTRYSELECT, 2021, 6 (45): : 12590 - 12603
  • [32] Study on the Photocatalytic Degradation of Rhodamine B by g-C3N4/Bi2Fe4O9 Heterojunction Photocatalyst
    Shuyan Qi
    Ling Guan
    Ruiyan Zhang
    Shanqiang Wu
    Kaiyao Zhang
    Journal of Inorganic and Organometallic Polymers and Materials, 2023, 33 : 3675 - 3683
  • [33] Synergistic degradation and ecotoxicology assessment of tetracycline by II-scheme Cu3BiS3/Bi2Fe4O9 photocatalytic activation of peroxymonosulfate
    Liu, Jie
    Ma, Junjie
    Ding, Ning
    Liu, Hong
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2025, 705
  • [34] Study on the Photocatalytic Degradation of Rhodamine B by g-C3N4/Bi2Fe4O9 Heterojunction Photocatalyst
    Qi, Shuyan
    Guan, Ling
    Zhang, Ruiyan
    Wu, Shanqiang
    Zhang, Kaiyao
    JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS, 2023, 33 (11) : 3675 - 3683
  • [35] Synthesis and Photocatalytic Property of Preferred-oriented Bi2Fe4O9 Crystals by Using Different Organic Additives
    Tong, Tong
    Cai, Dengrong
    Jin, Dengren
    Cheng, Jinrong
    FERROELECTRICS, 2013, 453 (01) : 93 - 99
  • [36] Single-crystalline Bi2Fe4O9 synthesized by low-temperature co-precipitation: performance as photo- and Fenton catalysts
    Hu, Zhong-Ting
    Chen, Bo
    Lim, Teik-Thye
    RSC ADVANCES, 2014, 4 (53): : 27820 - 27829
  • [37] Molecular structure-dependent contribution of reactive species to organic pollutant degradation using nanosheet Bi2Fe4O9 activated peroxymonosulfate
    Rao, Yongfang
    Zhou, Chuanyi
    Wu, Puqiu
    Fan, Jiahui
    Zhang, Yuanyuan
    Yang, Honghui
    Pu, Shengyan
    JOURNAL OF HAZARDOUS MATERIALS, 2023, 452
  • [38] Hydrothermal Synthesis of Single-Crystalline Bi2Fe4O9 Photocatalyst with Enhanced Visible-Light Photocatalytic Activity
    Ma, Huan
    Liu, Qiyong
    Zhang, Bo
    Zhang, Renjie
    Chen, Zhiyong
    Li, Yanqiang
    Shao, Weiquan
    Wu, Xinyan
    Zhang, Yongcheng
    Ye, Wanneng
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2019, 19 (12) : 7859 - 7865
  • [39] Facile synthesis of magnetic framework composite MgFe2O4@UiO-66(Zr) and its applications in the adsorption-photocatalytic degradation of tetracycline
    Vo, The Ky
    Kim, Jinsoo
    ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2021, 28 (48) : 68261 - 68275
  • [40] Novel heterojunction magnetic composite MIL-53 (Fe)/ZnFe2O4: Synthesis and photocatalytic pollutant degradation
    Mahnaz Mohebali Nejadian
    Niyaz Mohammad Mahmoodi
    Cyrus Ghotbi
    Farhad Khorasheh
    Korean Journal of Chemical Engineering, 2022, 39 : 2713 - 2724