High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution
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...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2012
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| Online Access: | https://hdl.handle.net/10356/100812 http://hdl.handle.net/10220/7455 |
| _version_ | 1811690349585760256 |
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| author | Gao, Peng Liu, Jincheng Lee, Siew Siang Zhang, Tong Sun, Darren Delai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Gao, Peng Liu, Jincheng Lee, Siew Siang Zhang, Tong Sun, Darren Delai |
| author_sort | Gao, Peng |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T06:02:35Z |
| format | Journal Article |
| id | ntu-10356/100812 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:02:35Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/1008122020-03-07T11:43:47Z High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution Gao, Peng Liu, Jincheng Lee, Siew Siang Zhang, Tong Sun, Darren Delai School of Civil and Environmental Engineering DRNTU::Engineering::Materials::Ecomaterials 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. Accepted version 2012-01-11T00:55:45Z 2019-12-06T20:28:45Z 2012-01-11T00:55:45Z 2019-12-06T20:28:45Z 2011 2011 Journal Article 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. 0959-9428 https://hdl.handle.net/10356/100812 http://hdl.handle.net/10220/7455 10.1039/c2jm15624e en Journal of materials chemistry © 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]. application/pdf |
| spellingShingle | DRNTU::Engineering::Materials::Ecomaterials Gao, Peng Liu, Jincheng Lee, Siew Siang Zhang, Tong Sun, Darren Delai High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title | High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title_full | High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title_fullStr | High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title_full_unstemmed | High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title_short | High quality graphene oxide–CdS–Pt nanocomposites for efficient photocatalytic hydrogen evolution |
| title_sort | high quality graphene oxide cds pt nanocomposites for efficient photocatalytic hydrogen evolution |
| topic | DRNTU::Engineering::Materials::Ecomaterials |
| url | https://hdl.handle.net/10356/100812 http://hdl.handle.net/10220/7455 |
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