肺表面活性物质
纳米材料
胶体
化学
酒
胶体金
化学工程
纳米技术
材料科学
无机化学
有机化学
纳米颗粒
生物化学
工程类
作者
Jonathan Quinson,Olivia Aalling‐Frederiksen,Waynah Lou Dacayan,Joachim D. Bjerregaard,Kim Degn Jensen,Mads Ry Vogel Jørgensen,Innokenty Kantor,Daniel Risskov Sørensen,Luise Theil Kuhn,Matthew S. Johnson,Marı́a Escudero-Escribano,Søren Bredmose Simonsen,Kirsten M. Ø. Jensen
标识
DOI:10.1021/acs.chemmater.3c00090
摘要
Gold nanoparticles (Au NPs) and gold-based nanomaterials combine unique properties relevant for medicine, imaging, optics, sensing, catalysis, and energy conversion. While the Turkevich–Frens and Brust–Schiffrin methods remain the state-of-the-art colloidal syntheses of Au NPs, there is a need for more sustainable and tractable synthetic strategies leading to new model systems. In particular, stabilizers are almost systematically used in colloidal syntheses, but they can be detrimental for fundamental and applied studies. Here, a surfactant-free synthesis of size-controlled colloidal Au NPs stable for months is achieved by the simple reduction of HAuCl4 at room temperature in alkaline solutions of low-viscosity mono-alcohols such as ethanol or methanol and water, without the need for any other additives. Palladium (Pd) and bimetallic AuxPdy NPs, nanocomposites and multimetallic samples, are also obtained and are readily active (electro)catalysts. The multiple benefits over the state-of-the-art syntheses that this simple synthesis bears for fundamental and applied research are highlighted.
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