Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk 361-763, Korea.
ACS Appl Mater Interfaces. 2011 Feb;3(2):441-6. doi: 10.1021/am101018g. Epub 2011 Jan 19.
Nanostructured Au surfaces have unique and attractive properties as functional materials in many fields such as heterogeneous catalysis and electrocatalysis. Electrochemical deposition of Au has received much attention as a simple route for the fabrication of Au surface nanostructures. In this study, we report a simple electrodeposition of Au nanoplate structures from Au(CN)(2)(-) on Au surfaces in the absence of additives or premodification of electrode surfaces. The shape of the Au nanoplates as well as their surface structures is unique compared to other Au nanostructures electrodeposited from commonly employed AuCl(4)(-) complexes. The nanoplate Au surfaces exhibit unique electrocatalytic activities for oxygen reduction and glucose oxidation, which originate from the Au(110) and Au(100) facets present on nanoplate surfaces. A simple preparation of well-defined Au nanoplate structures would allow new opportunities in various areas utilizing Au-based substrates through further modification of Au surfaces.
纳米结构的金表面作为功能材料在许多领域具有独特而吸引人的性质，例如多相催化和电催化。电化学沉积金作为制造金表面纳米结构的简单途径受到了广泛关注。在这项研究中，我们报告了一种简单的电沉积方法，从 Au(CN)(2)(-) 在没有添加剂或电极表面预先修饰的情况下在 Au 表面上沉积 Au 纳米板结构。与从常用的 AuCl(4)(-) 配合物电沉积的其他 Au 纳米结构相比，Au 纳米板的形状及其表面结构是独特的。纳米板 Au 表面对氧还原和葡萄糖氧化表现出独特的电催化活性，这源于纳米板表面存在的 Au(110) 和 Au(100) 面。通过进一步修饰 Au 表面，制备出具有良好定义的 Au 纳米板结构的简单方法将为利用基于 Au 的基底的各个领域提供新的机会。
