title: Oxidation Ability of Plasmon-Induced Charge Separation Evaluated on the Basis of Surface Hydroxylation of Gold Nanoparticles.
abstract: The oxidation ability of plasmonic photocatalysts, which has its origins in plasmon-induced charge separation and has not yet been studied quantitatively and systematically, is important for designing practical photocatalytic systems. Oxidation ability was investigated on the basis of surface hydroxylation of Au nanoparticles on TiO2 at various irradiation wavelengths and electrolyte pH values. The reaction proceeds only when the sum of the flat band potential of TiO2 and the irradiated photon energy is close to, or more positive than, the theoretical potential for the reaction.
authors: Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
authors: Hiroyasu
authors: H
authors: Nishi
authors: Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, 153-8505, Japan. tatsuma@iis.u-tokyo.ac.jp.
authors: Tetsu
authors: 0000-0001-8738-9837
authors: T
authors: Tatsuma
keywords: gold nanoparticles; localized surface plasmon resonance; photocatalysis; plasmon-induced charge separation; surface hydroxylation