Chinese Journal of Catalysis ›› 2022, Vol. 43 ›› Issue (2): 536-545.DOI: 10.1016/S1872-2067(21)63865-2

• Article • Previous Articles    

Monodisperse Ni-clusters anchored on carbon nitride for efficient photocatalytic hydrogen evolution

Liang Jiana, Huizhen Zhanga, Bing Liua, Chengsi Pana, Yuming Donga,*(), Guangli Wanga, Jun Zhongb, Yongjie Zhengc, Yongfa Zhua,d,#()   

  1. aInternational Joint Research Center for Photo-responsive Molecules and Materials, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu, China
    bInstitute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, Jiangsu, China
    cQingdao Geological Exploration Institute of China Metallurgical Geology Bureau, Qingdao 266109, Shandong, China
    dDepartment of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2021-05-10 Accepted:2021-06-16 Online:2022-02-18 Published:2021-06-28
  • Contact: Yuming Dong, Yongfa Zhu
  • Supported by:
    This work was supported by the National Natural Science Foundation of China(21676123);This work was supported by the National Natural Science Foundation of China(21575052);the Natural Science Foundation of Jiangsu Province(BK20161127);the Natural Science Foundation of Jiangsu Province(BK20201345);the National First-class Discipline Program of Food Science and Technology(JUFSTR20180301);MOE & SAFEA for the 111 Project(B13025);Central Laboratory, School of Chemical and Material Engineering, Jiangnan University

Abstract:

The active sites of monodisperse transition metal Ni-clusters were anchored on carbon nitride (CN) by an in situ photoreduction deposition method to promote the efficient separation of photogenerated charges and achieve high-efficiency photocatalytic activity for hydrogen evolution. The Ni-cluster/CN exhibited a photocatalytic hydrogen production rate of 16.5 mmol·h -1·g -1 and a total turnover frequency (TOF (H2)) value of 461.14 h -1. X-ray absorption spectroscopy based on synchrotron radiation indicated that CN had two reaction centers to form stable interface interactions with monodispersed Ni-clusters, in which carbon can act as an electron acceptor, while nitrogen can act as an electron donor. Meanwhile, the hybrid electronic structure of the Ni-cluster/CN system was constructed, which was favorable for photocatalytic activity for hydrogen production. An in-depth understanding of the interfacial interaction between CN and Ni-clusters will have important reference significance on the mechanistic study of development based on the cocatalyst.

Key words: Monodisperse Ni-clusters, Carbon nitride, Interface interaction, Photocatalytic hydrogen evolution