The photogenerated charge characteristics in Ni@NiO/CdS hybrids for increased photocatalytic H2 generation

Lijing Zhang; Xiufang Zhu; Yuanyuan Zhao; Pengyu Zhang; Jing Chen; Jinlong Jiang; Tengfeng Xie

doi:10.1039/C9RA06034K

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The photogenerated charge characteristics in Ni@NiO/CdS hybrids for increased photocatalytic H₂ generation†

Lijing Zhang,

*^b Xiufang Zhu,*^b Yuanyuan Zhao,^b Pengyu Zhang,^b Jing Chen,^b Jinlong Jiang^b and Tengfeng Xie

*^a

Author affiliations

* Corresponding authors

^a State Key Laboratory of Theoretical and Computational Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
E-mail: xietf@jlu.edu.cn

^b College of Chemical Engineering, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huaian 223003, China
E-mail: lijingz16@hyit.edu.cn, xiufangzhu@hyit.edu.cn

Abstract

Solar-driven H₂ generation from water splitting with semiconductor materials is considered an effective solution to solve the problems of energy shortage and environmental pollution at a low cost. In this study, a highly efficient photocatalyst Ni@NiO/CdS for H₂ evolution was synthesised using a simple solvothermal method and calcination. The HRTEM results and elemental mapping tests confirmed that Ni@NiO was successfully loaded on the surface of CdS. For Ni@NiO loaded, Ni@NiO/CdS exhibited remarkable photocatalytic H₂ evolution activity of 87.6 μmol h⁻¹, which was about 104 times higher than that of pure CdS. The enhanced H₂ evolution activity of Ni@NiO/CdS was ascribed to the prolonged lifetime of the photogenerated charges and the reduced surface overpotential for H₂ evolution.

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Article information

DOI: https://doi.org/10.1039/C9RA06034K
Article type: Paper
Submitted: 03 Aug 2019
Accepted: 04 Nov 2019
First published: 02 Dec 2019
This article is Open Access

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RSC Adv., 2019,9, 39604-39610

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The photogenerated charge characteristics in Ni@NiO/CdS hybrids for increased photocatalytic H₂ generation

L. Zhang, X. Zhu, Y. Zhao, P. Zhang, J. Chen, J. Jiang and T. Xie, RSC Adv., 2019, 9, 39604 DOI: 10.1039/C9RA06034K

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