Electrocatalytic glycerol oxidation enabled by surface plasmon polariton-induced hot carriers in Kretschmann configuration

Kyungwha Chung, Xingzhong Zhu, Xiaolu Zhuo, Yu Jin Jang, Chi Hun Choi, June Sang Lee, Seung Hoon Kim, Minju Kim, Kiheung Kim, Donghyun Kim, Hyung Chul Ham, Akira Baba, Jianfang Wang, Dong Ha Kim

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Plasmonic hot carrier generation has attracted increasing attention due to its ability to convert light to electrical energy. The generation of plasmon-induced hot carriers can be achieved via Landau damping in the non-radiative decay process of the plasmonic excitation energy. Localized surface plasmons (LSPs) undergo both radiative and non-radiative decays, while surface plasmon polaritons (SPPs) dissipate only via the non-radiative decay. Thus, it is a challenging task to exploit the surface plasmon polaritons for the efficient generation of hot carriers and their applications. In this study, a model hot-carrier-mediated electrocatalytic conversion system was demonstrated using an Au thin film in Kretschmann configuration, which is the representative platform to excite SPPs. AgPt-decorated Au nanobipyramids (AuNBPs) were designed and introduced onto the Au film, creating hot-spots to revolutionize the thin film-based photon-To-carrier conversion efficiency. The glycerol electro-oxidation reaction enabled by such SPP-induced hot carriers was evaluated and exhibited a photon-To-hot carrier conversion efficiency of 2.4 × 10-3%, which is ∼2.5 times enhanced as compared to the efficiency based on the neat Au film.

Original languageEnglish
Pages (from-to)23234-23240
Number of pages7
JournalNanoscale
Volume11
Issue number48
DOIs
StatePublished - 28 Dec 2019

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