Journal
ACS NANO
Volume 9, Issue 6, Pages 6565-6575Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.5b02547
Keywords
gold nanoparticles; Fermi level equilibration; liquid-liquid interfaces; redox catalysis; electron transfer; nanofilm
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Funding
- Fondazione Oronzio e Niccolo De Nora
- Swiss National Science Foundation
- Swiss Federal Office of Energy
- Science Foundation Ireland (SFI) [13/SIRG/2137]
- Science Foundation Ireland (SFI) [13/SIRG/2137] Funding Source: Science Foundation Ireland (SFI)
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Soft or liquid-liquid interfaces were functionalized by roughly half a monolayer of mirror-like nanofilnns of gold nanoparticles using a precise interfacial microinjection method. The surface coverage of the nanofilm was characterized by ion transfer voltammetry. These gold nanoparticle films represent an ideal model system for studying both the thermodynamic and kinetic aspects of interfacial redox catalysis. The electric polarization of these soft interfaces is easily controllable, and thus the Fermi level of the electrons in the interfacial gold nanoparticle film can be easily manipulated. Here, we study interfacial redox catalysis between two redox couples located in adjacent immiscible phases and highlight the catalytic properties of a gold nanoparticle film toward heterogeneous electron transfer reactions.
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