UPMC, Laboratoire d'Electrochimie, Chimie des Interfaces et Modélisation pour l'Energie, ENSCP, Chimie ParisTech, CNRS/UMR 7575, Paris, France.
Nanotechnology. 2011 May 20;22(20):205301. doi: 10.1088/0957-4484/22/20/205301. Epub 2011 Mar 28.
This report describes the electrochemical preparation of dendritic silver films with unusual wetting properties coming from the use of a self-assembled gold nanoparticle (Au NP) template. It shows that the Au NP self-assembled monolayer on the highly ordered pyrolytic graphite (HOPG) surface is responsible for the formation of the dendritic morphology, which is not observed for the same deposition conditions on a bare HOPG substrate. An interesting evolution of the wetting properties of these films during the electrodeposition process is observed. Field emission scanning electron microscopy (FEGSEM), energy-dispersive spectrometry (EDS), x-ray photoelectron spectroscopy (XPS) and contact angle measurements are used to reveal the dendritic structure of the deposited silver film at a later stage of the electrodeposition process. They also reveal surprising wetting properties in terms of hydrophobic surface.
本报告描述了使用自组装金纳米粒子 (Au NP) 模板来制备具有特殊润湿性的枝晶状银膜的电化学方法。结果表明，在高度有序的热解石墨 (HOPG) 表面上的 Au NP 自组装单层负责形成枝晶形态，而在裸 HOPG 基底上相同的沉积条件下则观察不到这种形态。在电沉积过程中，这些薄膜的润湿性发生了有趣的演变。场发射扫描电子显微镜 (FEGSEM)、能谱仪 (EDS)、X 射线光电子能谱 (XPS) 和接触角测量用于揭示电沉积过程后期沉积银膜的枝晶结构。它们还揭示了疏水性表面方面令人惊讶的润湿特性。
