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NiS nanoparticle decorated MoS2 nanosheets as efficient promoters for enhanced solar H2 evolution over ZnxCd1−xS nanorods

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Abstract

Facilitating charge separation as well as surface redox reactions is central to improve semiconductor catalyzed solar hydrogen generation. Photocatalysts comprising intimately interfaced photoabsorbers and co-promoters for the enhanced photocatalytic efficiency have gained much attention. In this paper, efficient promoters of NiS decorated MoS2 nanosheets (MoS2/NiS) coupled with ZnxCd1−xS nanorods have been prepared through a convenient hydrothermal method. The as-achieved Zn0.2Cd0.8S/MoS2/NiS nanohybrids exhibited a high solar H2 evolution activity with a rate of 41.29 mmol gcat−1 h−1 and the apparent quantum efficiency of 19% at a wavelength of 435 nm. The result represents one of the most active photocatalysts with noble-metal-free cocatalysts. The synergetic effects of MoS2 and NiS are responsible for the enhanced photocatalytic activity, and the presence of NiS further promotes the photo-induced electron-transfer from Zn0.2Cd0.8S to MoS2. This work opens an avenue for the design of efficient cocatalysts towards the enhancement of photocatalytic performance.

Graphical abstract: NiS nanoparticle decorated MoS2 nanosheets as efficient promoters for enhanced solar H2 evolution over ZnxCd1−xS nanorods

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Publication details

The article was received on 28 Mar 2017, accepted on 24 Apr 2017 and first published on 27 Apr 2017


Article type: Research Article
DOI: 10.1039/C7QI00170C
Citation: Inorg. Chem. Front., 2017, Advance Article
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    NiS nanoparticle decorated MoS2 nanosheets as efficient promoters for enhanced solar H2 evolution over ZnxCd1−xS nanorods

    C. An, J. Feng, J. Liu, G. Wei, J. Du, H. Wang, S. Jin and J. Zhang, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00170C

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