Bifunctional nanocatalyst of bimetallic nanoparticle/TiO2 with enhanced performance in electrochemical and photoelectrochemical applications
A novel metal/semiconductor hybrid nanostructure with enhanced catalytic functions has been prepared by a simple self-assembly approach. This new bifunctional nanocatalyst consists of evenly dispersed Au/Pt hybrid nanoparticles (Au/Pt NPs) assembled on NH(2) group functionalized anatase TiO(2) collo...
| Veröffentlicht in: | Langmuir : the ACS journal of surfaces and colloids. - 1992. - 26(2010), 13 vom: 06. Juli, Seite 11401-6 |
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| Weitere Verfasser: | , , |
| Format: | Online-Aufsatz |
| Sprache: | English |
| Veröffentlicht: |
2010
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| Zugriff auf das übergeordnete Werk: | Langmuir : the ACS journal of surfaces and colloids |
| Schlagworte: | Journal Article Research Support, Non-U.S. Gov't titanium dioxide 15FIX9V2JP Titanium D1JT611TNE |
| Zusammenfassung: | A novel metal/semiconductor hybrid nanostructure with enhanced catalytic functions has been prepared by a simple self-assembly approach. This new bifunctional nanocatalyst consists of evenly dispersed Au/Pt hybrid nanoparticles (Au/Pt NPs) assembled on NH(2) group functionalized anatase TiO(2) colloid spheres with nanoporous surface (f-TiO(2)). The resulting bimetallic nanoparticles/TiO(2) (noted as f-TiO(2)-Au/Pt NPs) hybrid nanostructure is characterized by various methods and expected as a promising catalyst in electrochemical and photoelectrochemical applications because of its satisfactory or even enhanced catalytic properties from both TiO(2) and Au/Pt NPs. Compared with the f-TiO(2), the electrochemical results indicate that the as-prepared f-TiO(2)-Au/Pt NPs exhibited more prominent electrocatalytic reduction toward hydrogen peroxide at low potential, which was then used as a sensitive sensor with a detection limit of 75 nM. Most importantly, the present hybrid material has the better photocatalytic property, as demonstrated by the photoelectrochemical catalysis of glucose |
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| Beschreibung: | Date Completed 30.09.2010 Date Revised 21.11.2013 published: Print Citation Status MEDLINE |
| ISSN: | 1520-5827 |
| DOI: | 10.1021/la100869r |