title: Cluster size effects of platinum oxide as active sites in hydrogen evolution reactions.
abstract: The successful design of photocatalytic hydrogen generation from water relies on a thorough understanding of the role of cocatalyst. The photoreactivity was studied as a function of the cluster size of the oxidized platinum cocatalyst. The maximum turnover frequency is found on the smallest-sized cocatalyst. This effect can be attributed to the size-dependent proton adsorption.
authors.affiliation: Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China), Fax: (+86) 21-6425-2127.
authors.forename: Yu Hang
authors.initials: YH
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Xing
authors.forename: Xiao Hua
authors.initials: XH
authors.lastname: Yang
authors.forename: Hua Gui
authors.initials: HG
authors.lastname: Yang
keywords: cluster size effects; heterogeneous catalysis; hydrogen; photocatalysis; platinum oxide