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Photocatalytic Activity of Au/TiO 2 Photocatalysts for H 2 Evolution: Role of the Au Nanoparticles as a Function of the Irradiation Wavelength
Author(s) -
Serra Marco,
Albero Josep,
García Hermenegildo
Publication year - 2015
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201500141
Subject(s) - photocatalysis , irradiation , nanoparticle , visible spectrum , photochemistry , catalysis , materials science , surface plasmon resonance , chemical engineering , wavelength , nanotechnology , chemistry , optoelectronics , organic chemistry , physics , nuclear physics , engineering
An investigation of hydrogen production with a series of Au/TiO 2 photocatalysts reveals that the Au nanoparticles play different roles depending on the wavelength of the light irradiation. Under visible‐light irradiation, the photoactivity is primarily controlled by the intensity of the Au surface plasmon band, whereas under UV irradiation the Au nanoparticles act as co‐catalysts with TiO 2 .