State Key Laboratory of Heavy Oil Processing, Department of Chemical Engineering, China University of Petroleum, Beijing 102249, P. R. China.
Nanoscale. 2012 Apr 21;4(8):2633-9. doi: 10.1039/c2nr12135b. Epub 2012 Mar 8.
Pt-Pd bimetallic alloy nanostructures with highly selective morphologies such as cube, bar, flower, concave cube, and dendrite have been achieved through a facile one-pot solvothermal synthesis. The effects of shape-controllers (sodium dodecyl sulfate (SDS), ethylenediamine-tetraacetic acid disodium salt (EDTA-2Na), NaI) and solvents (water/DMF) on the morphologies were systematically investigated. The electrocatalytic activities of these Pt-Pd alloy nanostructures toward formic acid oxidation were tested. The results indicated that these alloy nanocrystals exhibited enhanced and shape-dependent electrocatalytic activity toward formic acid oxidation compared to commercial Pt black and Pt/C catalysts.
通过简便的一锅溶剂热合成法，制备了具有高度选择性形态（如立方体、棒、花、凹立方体和树枝状）的 Pt-Pd 双金属合金纳米结构。通过系统地研究形状控制器（十二烷基硫酸钠（SDS）、乙二胺四乙酸二钠（EDTA-2Na）、NaI）和溶剂（水/DMF）对形态的影响，来实现这一目标。这些 Pt-Pd 合金纳米结构对甲酸氧化的电催化活性进行了测试。结果表明，与商业 Pt 黑和 Pt/C 催化剂相比，这些合金纳米晶对甲酸氧化表现出增强的、依赖于形状的电催化活性。
