Journal
LANGMUIR
Volume 35, Issue 7, Pages 2517-2526Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.8b03617
Keywords
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Funding
- LABEX iMUST of the Lyon I university within the program Investing in the Future by the French National Research Agency (ANR) [ANR-10-LABX-0064, ANR-11-IDEX-0007]
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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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