Photochemical preparation of atomically dispersed nickel on cadmium sulfide for superior photocatalytic hydrogen evolution

[Display omitted] •Atomically dispersed nickel was successfully prepared by a novel and precise photochemical route.•The Ni1/CdS hybrid catalyst performed outstanding HER activity under visible light and aerobic conditions.•A possible mechanism on the enhanced photocatalytic activity was investigate...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2020-02, Vol.261, p.118233, Article 118233
Main Authors: Zhang, Huizhen, Dong, Yuming, Zhao, Shuang, Wang, Guangli, Jiang, Pingping, Zhong, Jun, Zhu, Yongfa
Format: Article
Language:English
Subjects:
Aerobic conditions
Cadmium
Cadmium sulfide
Catalysts
Catalytic activity
Density functional theory
Dispersion
Durability
Electronic properties
Evolution
Hydrogen
Hydrogen evolution reactions
Hydrogen production
Hydrogen-based energy
Nanorods
Nickel
Photocatalysis
Photocatalyst
Photocatalysts
Photochemicals
Single-site
Sunlight
Water-splitting
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Summary:[Display omitted] •Atomically dispersed nickel was successfully prepared by a novel and precise photochemical route.•The Ni1/CdS hybrid catalyst performed outstanding HER activity under visible light and aerobic conditions.•A possible mechanism on the enhanced photocatalytic activity was investigated. Up to now, hydrogen production with a low-cost and efficient system driven by sunlight still remains a great challenge. Herein, atomically dispersed Ni modified CdS nanorods (NRs) hybrid photocatalyst (Ni1/CdS) with Ni loading up to 2.85 wt% was prepared by a facile, rapid and scalable photochemical method. Under optimal conditions, the highest rate for H2 evolution of Ni1/CdS photocatalyst is 630.1 mmol g−1 h−1 under visible light, which is one of the most robust photocatalytic HER systems based on CdS currently. Furthermore, the Ni1/CdS catalyst exhibits good stability and durability for hydrogen evolution reaction (HER) and outstanding photocatalytic activity under sunlight and aerobic conditions, indicating the great practical value of present reaction system. Density functional theory (DFT) calculations reveal that the introduction of single Ni atom on the CdS can improve the hydrogen binding energy and electronic properties, thus greatly boosting the photocatalytic H2 production activity.
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2019.118233