SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (3): 667-674.DOI: 10.1016/j.cjche.2017.09.007

• Materials and Product Engineering • 上一篇    

Synthesis of butterfly-like BiVO4/RGO nanocomposites and their photocatalytic activities

Liangliang Zhang1,2, Aolan Wang1, Nan Zhu1, Baochang Sun1,2, Yan Liang3, Wei Wu1,2   

  1. 1 State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
    2 Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    3 Beijing Urban Drainage Monitoring Center Co., Ltd., Beijing 100061, China
  • 收稿日期:2017-08-21 修回日期:2017-09-11 出版日期:2018-03-28 发布日期:2018-04-18
  • 通讯作者: Baochang Sun
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21676023, 21376025).

Synthesis of butterfly-like BiVO4/RGO nanocomposites and their photocatalytic activities

Liangliang Zhang1,2, Aolan Wang1, Nan Zhu1, Baochang Sun1,2, Yan Liang3, Wei Wu1,2   

  1. 1 State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China;
    2 Research Center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, Beijing 100029, China;
    3 Beijing Urban Drainage Monitoring Center Co., Ltd., Beijing 100061, China
  • Received:2017-08-21 Revised:2017-09-11 Online:2018-03-28 Published:2018-04-18
  • Contact: Baochang Sun
  • Supported by:

    Supported by the National Natural Science Foundation of China (21676023, 21376025).

摘要: A simple and high efficient method was proposed for the synthesis of uniform three dimensional (3D) BiVO4/reduced graphene oxide (RGO) nanocomposite photocatalyst by adopting the microwave assistant and using Bi (NO3)3·5H2O, graphene oxide (GO) and NH4VO3 as precursor. The as-obtained composites were well characterized with the aid of various techniques to study the morphology, structure, composition, optimal and electrical property. In the as-obtained composites, the GO sheets were fully reduced into RGO, and monoclinic structure BiVO4 crystallized completely into butterfly-like BiVO4 lamellas and well bonded with the RGO lamellas. The length and the width of the butterfly-like BiVO4 particle were about 1.5 μm, and the thickness of the flake was about 20 nm. Photocatalytic performances of BiVO4/RGO composite and pure BiVO4 particle have been evaluated by investigating the reduction of Cr(VI) ion-contained wastewater under simulated solar light irradiation, where the BiVO4/RGO composite displayed enhanced photocatalytic activity. It is found that the pseudo-first-order rate constants (k) for the photocatalytic reduction of Cr (VI) by BiVO4/RGO composite was about 4 times as high as that of the pure BiVO4. The present work suggested that the combination of BiVO4 and RGO displayed a remarkable synergistic effect, which led to enhanced photo-catalytic activity on Cr(VI) reduction.

关键词: Reduced graphene oxide, Bismuth vanadate, Nanocomposites, Microwave, Photo-reduction

Abstract: A simple and high efficient method was proposed for the synthesis of uniform three dimensional (3D) BiVO4/reduced graphene oxide (RGO) nanocomposite photocatalyst by adopting the microwave assistant and using Bi (NO3)3·5H2O, graphene oxide (GO) and NH4VO3 as precursor. The as-obtained composites were well characterized with the aid of various techniques to study the morphology, structure, composition, optimal and electrical property. In the as-obtained composites, the GO sheets were fully reduced into RGO, and monoclinic structure BiVO4 crystallized completely into butterfly-like BiVO4 lamellas and well bonded with the RGO lamellas. The length and the width of the butterfly-like BiVO4 particle were about 1.5 μm, and the thickness of the flake was about 20 nm. Photocatalytic performances of BiVO4/RGO composite and pure BiVO4 particle have been evaluated by investigating the reduction of Cr(VI) ion-contained wastewater under simulated solar light irradiation, where the BiVO4/RGO composite displayed enhanced photocatalytic activity. It is found that the pseudo-first-order rate constants (k) for the photocatalytic reduction of Cr (VI) by BiVO4/RGO composite was about 4 times as high as that of the pure BiVO4. The present work suggested that the combination of BiVO4 and RGO displayed a remarkable synergistic effect, which led to enhanced photo-catalytic activity on Cr(VI) reduction.

Key words: Reduced graphene oxide, Bismuth vanadate, Nanocomposites, Microwave, Photo-reduction