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Turbostratic carbon nitride enhances the performance and stability of cadmium sulfide nanorod hydrogen evolution photocatalysts

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Abstract

We report CdS nanorods encapsulated in a thin amorphous t-phased CNx layer modified with Pt nanoparticles (CdS/CNx-Pt) as photocatalysts for hydrogen production in 0.35 M Na2S and 0.25 M Na2SO3 solution. Compared to CdS/Pt counterparts, the CdS/CNx-Pt catalysts deliver more efficient and extraordinary stabilized catalytic activity. Herein, the t-CNx layer functions as (1) a protection layer to isolate CdS from the electrolyte and suppress the anodic photocorrosion of CdS and (2) as a tunnel junction to promote charge separation and electron transport to PtNPs for proton reduction. Surface photovoltage spectra (SPS) confirm 2.25 eV as the effective bandgap and the n-type character of the CdS nanorods. Photoelectron injection into the PtNPs and photohole injection into the sacrificial donors can be directly observed.

Graphical abstract: Turbostratic carbon nitride enhances the performance and stability of cadmium sulfide nanorod hydrogen evolution photocatalysts

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Publication details

The article was received on 17 Jul 2017, accepted on 30 Sep 2017 and first published on 30 Sep 2017


Article type: Research Article
DOI: 10.1039/C7QI00419B
Citation: Inorg. Chem. Front., 2017, Advance Article
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    Turbostratic carbon nitride enhances the performance and stability of cadmium sulfide nanorod hydrogen evolution photocatalysts

    X. Zhou, T. L. Shelton, Z. Xia and Y. Ma, Inorg. Chem. Front., 2017, Advance Article , DOI: 10.1039/C7QI00419B

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