Cellulose

, Volume 25, Issue 1, pp 167–177 | Cite as

Easily recoverable Cd x Zn1−x S-Gel photocatalyst with a tunable band structure for efficient and stable H2 production mediated by visible light

  • Yongli Wu
  • Jianping Gao
  • Chaoyue Hao
  • Shunkang Mei
  • Jiangbing Yang
  • Xiaoxue Wang
  • Ruiru Zhao
  • Xiangang Zhai
  • Yu Liu
Original Paper
  • 77 Downloads

Abstract

A photocatalyst consisting of a cellulose hydrogel loaded with Cd x Zn1−x S (Cd x Zn1−x S-Gel) was prepared, and its photocatalytic water splitting activity was studied. At room temperature, the Cd x Zn1−x S particles with an average size of about 3 nm were loaded in carboxymethyl cellulose hydrogel by an in situ chemical reaction. This synthesis method was simple and repeatable. Diffuse reflectance UV–vis results showed that it is possible to adjust the optical properties of the synthesized photocatalysts by adjusting their composition. Under visible light irradiation, the hydrogen production rate of the photocatalysts was greatly improved. In the absence of a co-catalyst, Cd0.2Zn0.8S-Gel obtained the highest hydrogen production rate of 1762.5 μmol g−1 h−1, which is almost 104 times of that of the pure CdS. Moreover, after four hydrogen production cycles, the hydrogen production rate did not decrease significantly, showing excellent stability. It is noteworthy that the Cd x Zn1−x S-Gel can easily be removed from the aqueous solution after hydrogen production. This is a new approach for manufacturing easy recoverable visible-light-driven photocatalysts, which is vital for hydrogen production through a “green” process.

Keywords

Carboxymethyl cellulose Hydrogel CdxZn1−xPhotocatalysis H2 evolution 

Notes

Acknowledgments

This work was supported by the National Science Foundation of China (51573126).

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Copyright information

© Springer Science+Business Media B.V., part of Springer Nature 2017

Authors and Affiliations

  • Yongli Wu
    • 1
  • Jianping Gao
    • 1
  • Chaoyue Hao
    • 1
  • Shunkang Mei
    • 1
  • Jiangbing Yang
    • 1
  • Xiaoxue Wang
    • 1
  • Ruiru Zhao
    • 1
  • Xiangang Zhai
    • 1
  • Yu Liu
    • 1
  1. 1.Department of Chemistry, School of ScienceTianjin UniversityTianjinPeople’s Republic of China

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