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Noble-Metal-Free Visible Light Driven Hetero-structural Ni/ZnxCd1−xS Photocatalyst for Efficient Hydrogen Production

  • Yang Liu
  • Guorong WangEmail author
  • Youlin Ma
  • Zhiliang JinEmail author
Article
  • 33 Downloads

Abstract

Ni/ZnxCd1−xS composite photocatalyst was successfully synthesized by hydrothermal method and in situ photodeposition method, and certain hydrogen evolution results were obtained in acidic, neutral and alkaline sacrificial reagents. Among them, hydrogen evolution amount reached 11.993 mmol h−1 g−1 in alkaline Na2S/Na2SO3 solution. According to SEM, TEM and Mapping, two solid solutions of ZnxCd1−xS were formed under specific reaction conditions, which provided a large specific surface area and increased the contact area between metal Ni and ZnxCd1−xS, leading to more electron transfer. The UV–Vis diffuse reflectance spectra indicates that, due to the interface interaction between Ni and ZnxCd1−xS, the photodeposition of Ni leads to the reduction of the band gap of the photocatalyst, the expansion of visible light absorption range, and the generation of more photogenerated electrons. The excellent electron transport ability of Ni leads to the rapid separation of electron–hole pairs, inhibits the recombination of electron–hole pairs, and greatly improves the photocatalytic activity. This work describes the effective synergistic effect of Ni/ZnxCd1−xS photocatalysis, showing good hydrogen evolution effect, and emphasizes the excellent electronic conductivity without noble metal synergistic catalyst.

Graphical Abstract

Keywords

Ni/ZnxCd1−xHydrogen production Noble-metal-free Hetero-structural 

Notes

Acknowledgments

This work was financially supported by the Chinese National Natural Science Foundation (41663012 and 21862002), The new technology and system for clean energy catalytic production, Major scientific project of North Minzu University (ZDZX201803).The Ningxia low-grade resource high value utilization and environmental chemical integration technology innovation team project, North Minzu University and the Key Laboratory for the development and application of electrochemical energy conversion technology, North Minzu University.

Author Contributions

YL conceived and designed the experiments; ZJ and GW contributed reagents/materials; YM assisted in the testing of the experiment.

Compliance with Ethical Standards

Conflicts of interest

The authors declare that they have no competing interests.

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Copyright information

© 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.Ningxia Key Laboratory of Solar Chemical Conversion TechnologyNorth Minzu UniversityYinchuanPeople’s Republic of China
  3. 3.Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs CommissionNorth Minzu UniversityYinchuanPeople’s Republic of China

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