Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (12): 2039-2047.DOI: 10.1016/S1872-2067(17)62953-X

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Synthesis and photocatalytic hydrogen production activity of the Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 hybrid layered perovskite

Bing Zhanga,c, Danping Huib, Yingxuan Lia,b, He Zhaoa,c, Chuanyi Wanga,b   

  1. a Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, Xinjiang, China;
    b School of Environmental Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, Shanxi, China;
    c University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-09-21 Revised:2017-10-30 Online:2017-12-18 Published:2017-12-29
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (U1403193, 21643012).

Abstract:

The nickel-based complex Ni-CH3CH2NH2-intercalated niobate layered perovskite Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 was synthesized via a facile in situ chemical reaction method. Using ultrathin H1.78Sr0.78Bi0.22Nb2O7 nanosheets and nickel acetate as precursors. The composition, structure, photophysical properties, and photocatalytic activity for H2 production of Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 were studied systematically. The photocatalyst loaded with 0.5 wt% Ni exhibited the highest H2 evolution rate of 372.67 μmo/h. This was 0.54 times higher than the activity of the H1.78Sr0.78Bi0.22Nb2O7 nanosheets. The activity of the optimized Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 was comparable to that of the Pt-loaded sample under the same reaction conditions. The photocatalytic activity of the Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7 was mainly attributed to the excellent separation of photogenerated carriers, after formation of the intercalated complex Ni-CH3CH2NH2. This study provides a facile strategy to synthesize a non-precious metal-loaded photocatalyst for H2 production.

Key words: Ni-CH3CH2NH2/H1.78Sr0.78Bi0.22Nb2O7, Intercalation, Photocatalysis, Hydrogen evolution, Nanosheets