期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 138, 期 50, 页码 16204-16207出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b10205
关键词
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资金
- Natural Science Foundations of China [21405182, 21476271, 21461162003, 21403306]
- National Basic Research Program of China [2015CB932300, 2015CB932301]
- Natural Science Foundations of Guangdong Province [S2013030013474, 2014KTSCX004]
Photocatalysis is a promising technology for renewable energy production. Many photocatalysis have realized the visible-light-driven catalytic activity. However, it is still difficult to achieve the enhanced photocatalytic activity with tunable wavelength. We have designed tunable wavelength enhanced photoelectrochemical cells by tuning the surface plasmon resonance (SPR) peaks, which can be controlled by the aspect ratios of the Au nanorods, for both the cathode with the hydrogen evolution reaction and the anode with the electrooxidation of methanol reaction. The optimal photocatalytic activity of the hydrogen evolution and electrooxidation of the methanol can be realized only when the illuminating wavelength matches with the SPR peaks, which is quite selective to the illuminating wavelength. The blue shift of the SPR peak increases the photoelectrocatalytic effect whereas the red shift enhances the photothermal effect. Such studies provide a useful way for improving the photocatalytic activity and the selectivity of the photo catalytic reactions by adjusting the illuminating wavelength.
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