Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (9): 949-955.doi: 10.15541/jim20170586

Special Issue: 环境材料

• Orginal Article • Previous Articles     Next Articles

Preparation and Visible-light-driven Photocatalytic Performance of Porous Rod-like FeVO4

Hai-Yan JIANG1(), Yun-Sheng XIA2, Yu-Zhen LI3()   

  1. 1. College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China
    2. College of Chemistry and Chemical Engineering, Bohai University, Jinzhou 121013, China
    3. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
  • Received:2017-12-07 Revised:2018-02-05 Online:2018-09-20 Published:2018-08-14
  • About author:JIANG Hai-Yan. E-mail: hyjiang@qau.edu.cn
  • Supported by:
    Scientific Research Foundation of Qingdao Agricultural University (663/1113317);Shanxi Provincial Key Research and Development Plan (general) Social Development Project (201703D321009-5);National Natural Science Foundation of China (21676028);College Students Innovations Special Project Funded by Taiyuan University of Technology (8003-02030381)

Abstract:

Pure triclinic porous FeVO4 with multiple morphologies were fabricated by adopting hydrothermal strategy using Fe(NO3)3 and NH4VO3 as inorganic source and NH3 solution as pH adjuster. The samples were characterized by means of techniques such as X-ray diffraction, scanning electron microscopy, and ultraviolet-visible diffuse reflectance spectroscopy. It was found that hydrothermal temperature and pH of the precursor solution exerted a great effect on the crystalline structure and the particle morphology of the product. Porous triclinic FeVO4 nanorods were generated hydrothermally at 180℃ and pH of 4 or 7, sheet-like FeVO4 was obtained at pH 4.0 and hydrothermal temperature of 120℃. However, the mixture of Fe2O3 (in majority) and FeVO4 (in minority) was prepared when pH of the precursor solution was raised to 10 at 180℃ or the hydrothermal temperature was raised to 240℃ at pH 4.0. Among the FeVO4 samples, porous FeVO4 nanorods with the highest surface area of 10.4 m2/g exhibited the best visible-light-driven photocatalytic performance for the degradation of MO. It is concluded that such an excellent photocatalytic performance is attributed to its higher crystallinity, surface area, and surface oxygen vacancy density, porous structure, and lower bandgap energy.

Key words: porous nanorods, FeVO4, hydrothermal method, photocatalytic performance

CLC Number: 

  • TQ174