期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 4, 页码 1114-1117出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b11341
关键词
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资金
- Center for Energy Efficient Materials, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001009]
- National Science Foundation [DMR 0805148]
- MRSEC Program of the NSF [DMR 1121053]
- China Scholarships Council
Plasmonic metal/semiconductor heterostructures show promise for visible-light-driven photo catalysis. Gold nanorods (AuNRs) semi-coated with TiO2 are expected to be ideally structured systems for hydrogen evolution. Synthesizing such structures by wet-chemistry methods, however, has proved challenging. Here we report the bottom-up synthesis of AuNR/TiO2 nanodumbbells (NDs) with spatially separated Au/TiO2 regions, whose structures are governed by the NRs' diameter, and the higher curvature and lower density of C-n TAB surfactant at the NRs' tips than on their lateral surfaces, as well as the morphology's dependence on concentration, and alkyl chain length of C-n TAB. The NDs show plasmon-enhanced H-2 evolution under visible and near-infrared light.
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