Hydrogen evolution from photocatalytic water splitting by LaMnO3 modified with amorphous CoSx

  • Min Mao
  • Jing XuEmail author
  • Yanru Li
  • Zeying Liu
Energy materials


The expansion of the optical response range and the high photoelectron holes separation and the transfer efficiency are prerequisites for the excellent hydrogen evolution performance of the catalyst. In this paper, amorphous CoSx is combined with rare-earth complex LaMnO3 and under the characterization of SEM, TEM, XRD and XPS, the successful synthesis of the composite catalyst was demonstrated; characterization results by UV–Vis, BET and electrochemical workstations show that the composite material exposes more active sites, and the close contact interface formed between the two effectively improves the separation and transmission of photogenerated carriers, and the ability of the composite material to sense light is also significantly enhanced. After optimizing the hydrogen production conditions of the composite catalyst, the hydrogen production under visible light (≥ 420 nm) for 5 h reached 458.8 μmol, which was about 6.8 and 4.5 times that of pure LaMnO3 and CoSx, and the hydrogen evolution stability of the material is very good. Studies have shown that amorphous CoSx is a good material that can replace precious metals for hydrogen production.



This work was supported by Natural Science Foundation of Ningxia Province (NZ17262); Foundation of Key Laboratory of Electrochemical Energy Conversion Technology Application at North Minzu University (2018KLEA02); Open Project of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University (2019-KF-36); and New Catalytic Process in Clean Energy Production (ZDZX201803).

Compliance with ethical standards

Conflict of interest

There are no conflicts of interest in this research article.

Supplementary material

10853_2019_4205_MOESM1_ESM.doc (31 kb)
Supplementary material 1 (DOC 31 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringNorth Minzu UniversityYinchuanPeople’s Republic of China
  2. 2.State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical EngineeringNingxia UniversityYinchuanPeople’s Republic of China
  3. 3.Key Laboratory of Chemical Engineering and Technology (North Minzu University)State Ethnic Affairs CommissionYinchuanPeople’s Republic of China
  4. 4.Ningxia Key Laboratory of Solar Chemical Conversion Technology Autonomous RegionNorth Minzu UniversityYinchuanPeople’s Republic of China

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