Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (3): 320-325.DOI: 10.1016/S1872-2067(18)63169-9

• Communication • Previous Articles     Next Articles

3D flower-like heterostructured TiO2@Ni(OH)2 microspheres for solar photocatalytic hydrogen production

Wei Zhanga,b, Hongwen Zhangb, Jianzhong Xua, Huaqiang Zhuangc, Jinlin Longb   

  1. a College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei, China;
    b State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, Fujian, China;
    c College of Chemical Engineering and Materials, Quanzhou Normal University, Quanzhou 362000, Fujian, China
  • Received:2018-07-25 Revised:2018-09-20 Online:2019-03-18 Published:2019-02-22
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21773031), the Natural Science Foundation of Fujian Province (2018J01686), and the State Key Laboratory of Photocatalysis on Energy and Environment (SKLPEE-2017A01 and SKLPEE-2017B02).

Abstract:

TiO2@Ni(OH)2 core-shell microspheres were synthesized by a facile strategy to obtain a perfect 3D flower-like nanostructure with well-arranged Ni(OH)2 nanoflakes on the surfaces of TiO2 microspheres; this arrangement led to a six-fold enhancement in photocatalytic hydrogen evolution. The unique p-n type heterostructure not only promotes the separation and transfer of photogenerated charge carriers significantly, but also offers more active sites for photocatalytic hydrogen production. A photocatalytic mechanism is proposed based on the results of electrochemical measurements and X-ray photoelectron spectroscopy.

Key words: 3D flower-like core-shell microspheres, TiO2, Ni(OH)2, Photocatalytic hydrogen production