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Illuminating nanostructured gold electrode: surface plasmon or electron ejection?

Abstract

Recently, the photoelectric effect in metals in electrolyte environments has aroused the interest of researchers. However, direct evidence for surface-plasmon-enhanced electrochemical reactions involving classic outer-sphere reactions of reversible redox couples is seldom reported. We used a surface-plasmon-active gold-mushroom-array as a working electrode and observed enhanced faradaic current from ferrocenemethanol following illumination with a xenon lamp. The photoelectric current behaved differently in the presence and absence of oxygen in the solution. The preliminary results are discussed with consideration of the possible mechanisms of electron transfer, although they are very complex, due to the lack of direct evidence. Some consideration was also taken of the research on photoelectrochemical reactions on metallic electrodes.

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Publication details

The article was received on 03 Feb 2018, accepted on 16 Mar 2018 and first published on 27 Mar 2018


Article type: Paper
DOI: 10.1039/C8FD00012C
Citation: Faraday Discuss., 2018, Accepted Manuscript
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    Illuminating nanostructured gold electrode: surface plasmon or electron ejection?

    D. Huang, Q. He, J. Shan, M. Sartin, R. Pang, F. Yang, Y. Zhou, B. Ren, Z. Tian and D. Zhan, Faraday Discuss., 2018, Accepted Manuscript , DOI: 10.1039/C8FD00012C

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