title: Facet-selective photodeposition of gold nanoparticles on faceted ZnO crystals for visible light photocatalysis.
abstract: Hexagonal prism-like ZnO crystals dominated with polar facets were synthesized using a hydrothermal method. The Gold (Au) nanoparticles were selectively photodeposited on the polar surfaces of faceted ZnO crystals as a result of anisotropic photocatalytic activities of the polar and nonpolar facets. The size of Au nanoparticles uniformly dispersed on the polar facets increased with increasing Au-loading amount. These Au-loaded ZnO crystals showed an additional visible light absorption band from 400nm to 800nm. The 0.1wt% Au-loaded ZnO crystals with visible light absorption peak at approximately 690nm exhibited the highest photocatalytic activity under visible light irradiation.
authors.affiliation: The Institute of Applied Chemistry, The College of Chemistry, Nanchang University, 999(#) Xuefu Road, Nanchang 330031, PR China. Electronic address: wangxuewen@ncu.edu.cn.
authors.forename: Xuewen
authors.initials: X
authors.lastname: Wang
authors.affiliation: The Institute of Applied Chemistry, The College of Chemistry, Nanchang University, 999(#) Xuefu Road, Nanchang 330031, PR China.
authors.forename: Wuyou
authors.initials: W
authors.lastname: Wang
authors.affiliation: The Institute of Applied Chemistry, The College of Chemistry, Nanchang University, 999(#) Xuefu Road, Nanchang 330031, PR China.
authors.forename: Yuanquan
authors.initials: Y
authors.lastname: Miao
authors.affiliation: The Institute of Applied Chemistry, The College of Chemistry, Nanchang University, 999(#) Xuefu Road, Nanchang 330031, PR China.
authors.forename: Gang
authors.initials: G
authors.lastname: Feng
authors.affiliation: The Institute of Applied Chemistry, The College of Chemistry, Nanchang University, 999(#) Xuefu Road, Nanchang 330031, PR China. Electronic address: rbzhang@ncu.edu.cn.
authors.forename: Rongbin
authors.initials: R
authors.lastname: Zhang
keywords: Gold; Photocatalysis; Plasmon; Polar facets; Visible light; ZnO