High Stability and Catalytic Activity of Supported Anisotropic Gold Nanocrystals

Abstract

Anisotropic gold nanocrystals, such as nanowires and nanoflowers, are attractive because of their potentials for novel optical and catalytic properties. In this review, we described optical property of anisotropic gold nanowires and nanoflowers prepared by using capping agent with amine group, which has selective adsorption property on gold surface. Dispersion and morphological stabilities of gold nanoflowers were improved by supporting Al₂O₃ and coating SiO₂, respectively, and the localized surface plasmon resonance was changed by supporting and coating method. In addition, the supported gold nanoflowers showed high catalytic activity for alcohol oxidation.