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Hydrated electron generation by excitation of copper localized surface plasmon resonance

Pavliuk, Mariia V., Gutiérrez Álvarez, Sol, Hattori, Yocefu, Messing, Maria E., Czapla-Masztafiak, Joanna, Szlachetko, Jakub, Silva, Jose L., Araujo, Carlos Moyses, Fernandes, Daniel L. A., Lu, Li, Kiely, Christopher J., Abdellah, Mohamed, Nordlander, Peter and Sá, Jacinto 2019. Hydrated electron generation by excitation of copper localized surface plasmon resonance. The Journal of Physical Chemistry Letters 10 (8) , pp. 1743-1749. 10.1021/acs.jpclett.9b00792

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Hydrated electrons are important in radiation chemistry and chargetransfer reactions, with applications that include chemical damage of DNA, catalysis, and signaling. Conventionally, hydrated electrons are produced by pulsed radiolysis, sonolysis, two-ultraviolet-photon laser excitation of liquid water, or photodetachment of suitable electron donors. Here we report a method for the generation of hydrated electrons via single-visible-photon excitation of localized surface plasmon resonances (LSPRs) of supported sub-3 nm copper nanoparticles in contact with water. Only excitations at the LSPR maximum resulted in the formation of hydrated electrons, suggesting that plasmon excitation plays a crucial role in promoting electron transfer from the nanoparticle into the solution. The reactivity of the hydrated electrons was confirmed via proton reduction and concomitant H2 evolution in the presence of a Ru/ TiO2 catalyst.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Publisher: ACS Publications
ISSN: 1948-7185
Date of First Compliant Deposit: 14 May 2019
Date of Acceptance: 28 March 2019
Last Modified: 13 Oct 2021 20:09

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