Abstract

Plasmonic Au- and Ag-decorated ZnO films on a glass substrate were obtained by a plasma electrolyte oxidation method with high-voltage discharge, followed by the decoration of Au nanoparticles (NPs) on their surface. With the increasing concentration of the Ag precursor, the thickness of the Ag-ZnO films decreased and the width of the bandgap increased, causing an enhancement in the near band-edge ultraviolet (UV) emission. With the decoration of the Au NPs, the photoluminescence of the Ag-ZnO films exhibited quenching of the band-edge UV emission, accompanied by the suppression of the visible emission in the photoluminescence spectra, and a significant enhancement in the photocatalytic efficiency for the photodegradation of Rhodamine B under solar simulator irradiation.

中文翻译：

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Au / Ag纳米粒子修饰的ZnO薄膜的增强的光学和光催化性能

摘要

通过等离子电解质氧化法在高电压下放电，在玻璃基板上用等离子修饰的Au和Ag修饰的ZnO薄膜，然后在其表面上装饰Au纳米颗粒（NPs）。随着Ag前驱物浓度的增加，Ag-ZnO膜的厚度减小并且带隙的宽度增加，从而导致近带边紫外（UV）发射的增强。通过修饰金纳米粒子，Ag-ZnO薄膜的光致发光表现出带边紫外光的猝灭，同时抑制了光致发光光谱中的可见光发射，并显着提高了光催化降解光的效率。太阳模拟器照射下若丹明B的含量。