十二面体
材料科学
结晶学
纳米技术
电化学
水溶液
纳米颗粒
Atom(片上系统)
化学物理
化学
物理化学
电极
计算机科学
嵌入式系统
作者
Hye-Eun Lee,Ki Dong Yang,Sang Moon Yoon,Hyo‐Yong Ahn,Yoon Young Lee,Hyejin Chang,Dae Hong Jeong,Jun Young Lee,Mi Young Kim,Ki Tae Nam
出处
期刊:ACS Nano
[American Chemical Society]
日期:2015-07-21
卷期号:9 (8): 8384-8393
被引量:242
标识
DOI:10.1021/acsnano.5b03065
摘要
A concave rhombic dodecahedron (RD) gold nanoparticle was synthesized by adding 4-aminothiophenol (4-ATP) during growth from seeds. This shape is enclosed by stabilized facets of various high-indexes, such as (331), (221), and (553). Because it is driven thermodynamically and stabilized by 4-ATP ligands, the concave RD maintains its structure over a few months, even after rigorous electrochemical reactions. We discussed the mechanism of the shape evolution controlled by 4-ATP and found that both the binding energy of Au-S and the aromatic geometry of 4-ATP are major determinants of Au atom deposition during growth. As a possible application, we demonstrated that the concave RD exhibits superior electrocatalytic performance for the selective conversion of CO2 to CO in aqueous solution.
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