基于表面等离子体共振效应的Ag(Au)/半导体纳米复合光催化剂的研究进展

由具有表面等离子体共振(surface plasmon resonance,SPR)效应的贵金属(Ag、Au等)纳米粒子和半导体纳米结构组成的纳米复合光催化剂具有优异的可见光光催化活性,成为新型光催化材料的研究热点之一。本文综述了Ag(Au)/半导体纳米复合光催化剂的制备方法、基本性质以及光催化应用方面的一些重要研究进展;重点介绍了Ag(Au)等纳米粒子的表面等离子共振增强可见光催化活性的机理,以及Ag(Au)纳米粒子与不同类型半导体复合的光催化剂的光催化性能,其中所涉及的半导体包括金属氧化物、硫化物和其他一些半导体;本领域未来几年的研究热点将集中于新型高效的Ag(Au)/半导体纳米复合光催化剂的微结构调控及其用于可见光驱动有机反应的机理研究。本文为基于SPR效应构建Ag(Au)/半导体纳米复合光催化剂的研究提供了有力的参考依据,并且指出Ag(Au)/半导体纳米复合光催化剂的研究是发展可见光高效光催化剂的重要方向。

Research progress of Ag(Au)/semiconductor nanohybrid photocatalysts based on surface plasmon resonance

Nanohybrid photocatalysts composed of noble metal nanoparticles (Ag, Au, etc.) with surface plasmon resonance (SPR) effect and semiconductor nanostructures have become one of the research hotspots in the field of advanced photocatalysis because of their excellent photocatalytic activity under visible light irradiation. This review summarized some significant research progress about the basic properties, preparation methods and the photocatalytic applications of the plasmonic Ag(Au)/semiconductor nanohybrid photocatalysts. We emphatically introduced the mechanism for the enhanced effect of Ag(Au) nanoparticles with SPR on visible light response photocatalytic activity, as well as the photocatalytic performance of the nanohybrid photocatalysts composed of Ag(Au) nanoparticles and different types of semiconductors, including metal oxides, metal chalcogenides and other semiconductors. The research in this field will focus during the next few years on the microstructure modulation of the novel high-efficiency Ag(Au)/semiconductor nanohybrid photocatalysts and their photocatalytic mechanisms in visible-light-driven organic reactions. This review would provide significant reference for designing Ag(Au)/semiconductor nanohybrid photocatalysts based on the SPR effect, and points out that the research of Ag(Au)/semiconductor nanohybrid photocatalysts is an important direction in developing high-performance visible-lightresponse photocatalysts.