POM 涂层金纳米结构的便捷绿色合成及可见光下的光催化活性

R.-X. Tan, Yan Li, Q.-H. Wang, Yingjie Guo, Jin Wang
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引用次数: 0

摘要

近年来,用简单的方法合成高效、环保的可见光光催化剂在光催化领域越来越具有吸引力。我们报道了通过在 Au0 上包覆聚氧化金属(POM),以绿色、简便的方法制备环境友好的可见光催化剂 Au@SbW9Co3 纳米结构,并研究了其在可见光下的光催化活性。制备的 Au@POM 纳米结构在可见光区域表现出光催化活性,这表明 POM 与 Au0 之间存在协同效应。此外,Au@POM 纳米结构的形貌、POM 的种类、POM 在催化剂中的比例以及 Au@POM 的浓度都会影响催化剂的光催化效果。当使用的 POM 为 SbW9Co3,Au3+:SbW9Co3 的摩尔比为 2:1.0,催化剂浓度为 0.15 mM 时,光催化效果最好,在可见光下催化 60 分钟后,对 EY 的去除率达到 99%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Convenient and Green Synthesis of POM-coated Gold Nanostructures and Photocatalytic Activity under Visible Light
Synthesizing efficient and environment-friendly visible-light photocatalyst with simple methods is becoming attractive in these years in the field of photocatalysis. We report the preparation of Au@SbW9Co3 nanostructures, an environment-friendly visible-light catalyst, by coating Au0 with Polyoxometalate (POM) in a green and convenient way, the photocatalytic activities of which were investigated under visible light. The prepared Au@POM nanostructures showed the photocatalytic active in visible light region, which indicates a synergistic effect between POM and Au0. In addition, the morphology of Au@POM nanostructures, species of POM, the proportion of POM in catalyst and the concentration of Au@POM all affect the photocatalytic effect of catalysts. When the used POM was SbW9Co3, the molar ratio of Au3+:SbW9Co3 was 2:1.0 and the catalyst concentration was 0.15 mM, the highest photocatalytic effect was obtained, and the removal efficiency for EY reached 99% after catalyzing 60 min in visible light.
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