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High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution

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High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution

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dc.contributor.author Gao, Peng
dc.contributor.author Liu, Jincheng
dc.contributor.author Lee, Siew Siang
dc.contributor.author Zhang, Tong
dc.contributor.author Sun, Darren Delai
dc.date.accessioned 2012-01-11T00:55:45Z
dc.date.available 2012-01-11T00:55:45Z
dc.date.copyright 2011
dc.date.issued 2012-01-11
dc.identifier.citation Gao, P., Liu, J., Lee, S., Zhang, T., & Sun, D. D. (2011). High quality graphene oxide-CdS-Pt nanocomposites for efficient photocatalytic hydrogen evolution. Journal of Materials Chemistry, 22, 2292-2298.
dc.identifier.issn 0959-9428
dc.identifier.uri http://hdl.handle.net/10220/7455
dc.description.abstract Graphene oxide–CdS–Pt (GO–CdS–Pt) nanocomposites with different amounts of Pt nanoparticles were successfully synthesized via the formic acid reduction process followed by a two-phase mixing method. The morphology, crystal phase and optical properties of obtained composites were well characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV-vis spectroscopy, Fourier transform IR spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS), respectively. The photocatalytic activity of GO–CdS–Pt composites for hydrogen generation was investigated. The results show that the GO–CdS–Pt composite containing 0.5 at% of Pt exhibits the highest hydrogen evolution rate of 123 mL h 1 g 1 with strong photostability, which is about 2.5 times higher than that of GO–CdS and 10.3 times higher than that of CdS. The increased photocatalytic hydrogen generation efficiency is attributed to the effective charge separation and decreased anti-recombination with the addition of GO and Pt, as well as the low overpotential of Pt for water splitting. Our findings pave a way to design multi-component graphene-based composites for highly efficient H2 generation and other applications.
dc.language.iso en
dc.relation.ispartofseries Journal of materials chemistry
dc.rights © 2011 The Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Materials Chemistry, The Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1039/c2jm15624e].
dc.subject DRNTU::Engineering::Materials::Ecomaterials.
dc.title High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1039/c2jm15624e
dc.description.version Accepted version

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