Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 17, Pages 6790-6793Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202001152
Keywords
electrochemistry; hot carriers; plasmoelectric effects; surface plasmon resonance; thermal effect
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Funding
- National Key R&D Program of China [2017YFA0204403]
- Major Program of National Natural Science Foundation of China [NSFC 51590892]
- Innovation and Technology Commission of HKSAR [ITS/453/17]
- Hong Kong Branch of National Precious Metals Material Engineering Research Center
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Hot carriers (HCs) and thermal effects, stemming from plasmon decays, are crucial for most plasmonic applications. However, quantifying these two effects remains extremely challenging due to the experimental difficulty in accurately measuring the temperature at reaction sites. Herein, we provide a novel strategy to disentangle HCs from photothermal effects based on the different traits of heat dissipation (long range) and HCs transport (short range), and quantitatively uncover the dominant and potential-dependent role of photothermal effect by investigating the rapid- and slow-response currents in plasmon-mediated electrochemistry at nanostructured Ag electrode. Furthermore, the plasmoelectric surface potential is found to contribute to the rapid-response currents, which is absent in the previous studies.
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