Photoelectrochemical Behavior of Silver Nanoparticles inside Mesoporous Titania: Plasmon-Induced Charge Separation Effect - Université Claude Bernard Lyon 1 Access content directly
Journal Articles Langmuir Year : 2018

Photoelectrochemical Behavior of Silver Nanoparticles inside Mesoporous Titania: Plasmon-Induced Charge Separation Effect

Abstract

The self-assembly block copolymer method was used to synthesize mesoporous titania films and silver nanoparticles (NPs) were grown inside the films. Such silver NPs-titania films are known for their multicolor photochromic properties due to a photo-oxidation reaction of silver in the presence of titania under light excitation which is attributed to a plasmon induced charge separation. Here, the photoelectrochemical properties of these composite films have been investigated at different light wavelengths and chemical environment in order to characterize the light-induced redox reactivity modifications. Cyclic voltammetry study shows that the Ag+ electro-reduction peak potential varies depending on the light irradiation, which determines the state of the silver nanoparticles complexed or not by titania.
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hal-02087646 , version 1 (02-04-2019)

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Maillard Mathieu, Nelly Couzon, Mathieu Maillard, Fernand Chassagneux, Arnaud Brioude, et al.. Photoelectrochemical Behavior of Silver Nanoparticles inside Mesoporous Titania: Plasmon-Induced Charge Separation Effect. Langmuir, 2018, 35 (7), pp.2517-2526. ⟨10.1021/acs.langmuir.8b03617⟩. ⟨hal-02087646⟩
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