《photodepositon of gold on titanium dioxide for photocatalytic phenol oxidation》.pdf

Applied Catalysis A: General 397 (2011) 112–120 Contents lists available at ScienceDirect Applied Catalysis A: General j o u rn al h omepage: w w w. elsev /locate/apc ata Photodeposition of gold on titanium dioxide for photocatalytic phenol oxidation M.C. Hidalgo ∗ , J.J. Murcia, J.A. Navío, G. Colón Instituto de Ciencia de Materiales de Sevilla (ICMS), Consejo Superior de Investigaciones Científicas CSIC - Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain a r t i c l e i n f o a b s t r a c t Article history: The influence of experimental conditions during the photodeposition in the preparation of supported Au Received 24 January 2011 on TiO2 has been studied. Besides preparation pH, light intensity and deposition time showed to have a Received in revised form 15 February 2011 high influence on the final properties of gold deposits. Accepted 19 February 2011 2 Photodeposition using illumination with a high light intensity UV–vis lamp (140 W/m UVA range) Available online 24 February 2011 resulted to be an ineffective method for obtaining nanoparticles of gold on the titania, producing very large and poorly distributed gold deposits. Thus obtained materials did not show any important improvement Keywords: of their photocatalytic activity tested for phenol oxidation. Photocatalysis