Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 305-701, Korea.
Small. 2013 Mar 11;9(5):660-5. doi: 10.1002/smll.201201813. Epub 2012 Oct 11.
Au-Pd alloy nanocrystals (NCs) with a hexoctahedral structure, enclosed exclusively by high-index {541} facets, are prepared via the simultaneous reduction of Au and Pd precursors without added seeds or additional metal ions as structure-regulating agents. Manipulating the NC growth kinetics via control of the relative amount of reductant is the key synthetic lever for controlling the morphology of the Au-Pd NCs. The hexoctahedral Au-Pd NCs exhibit higher catalytic performance toward the electro-oxidation of ethanol than low-index-faceted Au-Pd NCs.
具有六八面体结构、完全由高指数{541}面封闭的 Au-Pd 合金纳米晶体（NCs）是通过同时还原 Au 和 Pd 前体而制备的，无需添加种子或其他金属离子作为结构调节剂。通过控制还原剂的相对量来控制 NC 生长动力学是控制 Au-Pd NC 形态的关键合成手段。六八面体 Au-Pd NCs 对乙醇的电氧化表现出比低指数面 Au-Pd NCs 更高的催化性能。
