4.5 Article

Photocatalytic Activity of Au/TiO2 Photocatalysts for H2 Evolution: Role of the Au Nanoparticles as a Function of the Irradiation Wavelength

Journal

CHEMPHYSCHEM
Volume 16, Issue 9, Pages 1842-1845

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201500141

Keywords

gold; H-2 evolution; light harvester; nanoparticles; photocatalysis

Funding

  1. Spanish Ministry of Economy and Competitiveness [CTQ2012-32315]
  2. Generalitat Valenciana [Prometeo 2013/014]
  3. Spanish CSIC
  4. Severo Ochoa program

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An investigation of hydrogen production with a series of Au/TiO2 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 TiO2.

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