Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (5): 744-754.DOI: 10.1016/S1872-2067(19)63272-9

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Improved visible light photocatalytic activity of mesoporous FeVO4 nanorods synthesized using a reactable ionic liquid

Hanxiang Chenb, Jie Zengc, Mindong Chenb, Zhigang Chenc, Mengxia Jia, Junze Zhaoa, Jiexiang Xiaa, Huaming Lia   

  1. a School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, China;
    b School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, Jiangsu, China;
    c School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
  • Received:2018-11-03 Revised:2018-11-24 Online:2019-05-18 Published:2019-03-30
  • Contact: S1872-2067(19)63272-9
  • Supported by:

    This work was financially supported by the National Natural Science Foundation of China (21471069, 21476098, and 21576123) and Jiangsu University Scientific Research Funding (11JDG0146).

Abstract:

Mesoporous FeVO4 nanorods were successfully synthesized by calcining the precursor FeVO4·1.1H2O nanorods, which were obtained via a simple hydrothermal method in the presence of a reactable metal-ion-containing ionic liquid, 1-octyl-3-methylimidazolium tetrachloride ferrate(Ⅲ) ([Omim]FeCl4). The structure and morphology of the prepared samples were examined using various characterization techniques. During the synthetic process,[Omim]FeCl4 acted as the solvent, reactant, and capping agent simultaneously. Moreover, the porous FeVO4 nanorods as the heterogeneous photo-Fenton-like semiconductor catalyst for the degradation of tetracycline and rhodamine B under visible light irradiation exhibited excellent photocatalytic activity. This excellent photocatalytic activity of the porous FeVO4 nanorods can be attributed to the synergistic effect of their high electron-hole pair separation rate, suitable band gap structure, and large specific surface area. The possible photocatalytic degradation mechanism of FeVO4/H2O2 photocatalytic systems was also discussed in detail.

Key words: FeVO4, Visible light, Photodegradation, Ionic liquid