一种无模板、无表面活性剂的简单电化学方法制备树枝状金纳米结构及其在氧还原反应中的应用。

A templateless, surfactantless, simple electrochemical route to a dendritic gold nanostructure and its application to oxygen reduction.

机构信息

State Key Laboratory of Electroanalysis Chemistry, Changchun Institute of Applied Chemistry, Changchun, China, 130022.

出版信息

Langmuir. 2010 May 18;26(10):7627-31. doi: 10.1021/la904245q.

PMID:20099828

Abstract

A templateless, surfactantless, simple electrochemical route to prepare dendritic gold nanostructure is reported. The morphology, composition, and structure of as-prepared dendritic gold nanostructure were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), respectively. The whole nanostructure was constructed by pristine metallic gold. The formation mechanism related to experimental conditions was discussed. The synthesis promises indium tin oxide (ITO) electrode can be easily modified with the dendritic pristine gold nanostructure. The as-prepared modified ITO electrode has excellent catalytic activity to oxygen reduction in neutral KCl solution.

摘要

本文报道了一种无模板、无表面活性剂的简单电化学方法来制备树枝状金纳米结构。通过扫描电子显微镜（SEM）、透射电子显微镜（TEM）、能谱（EDX）、X 射线衍射（XRD）和 X 射线光电子能谱（XPS）分别对所制备的树枝状金纳米结构的形貌、组成和结构进行了表征。整个纳米结构由原始的金属金构成。讨论了与实验条件相关的形成机制。该合成方法有望使氧化铟锡（ITO）电极很容易地被树枝状原始金纳米结构修饰。所制备的修饰后的 ITO 电极在中性 KCl 溶液中对氧还原具有优异的催化活性。