Hydrated Electron Generation by Excitation of Copper Localized Surface Plasmon Resonance

Mariia V. Pavliuk, Sol Gutiérrez Álvarez, Yocefu Hattori, Maria E. Messing, Joanna Czapla-Masztafiak, Jakub Szlachetko, Jose L. Silva, Carlos Moyses Araujo, Daniel L. Fernandes, Li Lu, Christopher J. Kiely, Mohamed Abdellah, Peter Nordlander, Jacinto Sá

Research output: Contribution to journalArticlepeer-review

13 Citations (SciVal)

Abstract

Hydrated electrons are important in radiation chemistry and charge-transfer 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 H 2 evolution in the presence of a Ru/TiO 2 catalyst.

Original languageEnglish
Pages (from-to)1743-1749
Number of pages7
JournalJournal of Physical Chemistry Letters
Volume10
Issue number8
DOIs
Publication statusPublished - 2019 Apr 18

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics

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