A Synthetic Route for the Effective Preparation of Metal Alloy Nanoparticles and Their Use as Active Electrocatalysts
A Synthetic Route for the Effective Preparation of Metal Alloy Nanoparticles and Their Use as Active Electrocatalysts
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DOI：
10.1021/acscatal.5b02598
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发表时间：
2016-03-01
期刊：
影响因子：
12.9
通讯作者：
Rodriguez, Paramaconi
中科院分区：
文献类型：
--
作者：
Bennett, Elizabeth;Monzo, Javier;Rodriguez, Paramaconi
通过利用非平衡合成条件，我们使用阴极腐蚀方法制备了选定数量的合金，其中固溶体合金在环境条件下不存在。为了说明我们的研究结果，我们提出了在室温下制备的PtBi和PtPb合金纳米粒子与各种成分。这些合金已经显示出基准质量活性和耐久性，相对于甲酸氧化。催化活性的改善是基于金属合金的组成、减小的粒度以及非常重要的通过该方法获得的催化剂的清洁度水平来解释的。
By taking advantage of the nonequilibrium synthetic conditions, we used the cathodic corrosion method to prepare a selected number of alloys of which solid solution alloys do not exist under ambient conditions. To illustrate our findings, we present the preparation at room temperature of PtBi and PtPb alloy nanoparticles with various compositions. These alloys have shown benchmark mass activity and durability with respect to formic acid oxidation. The improvement in the catalytic activity is explained on the basis of the composition of the metal alloys, the reduced particle size, and, quite importantly, the level of cleanliness of the catalyst obtained by this method.