Ionic Liquid Assisted Synthesis of Au-Pd Bimetallic Particles with Enhanced Electrocatalytic Activity
Ionic Liquid Assisted Synthesis of Au-Pd Bimetallic Particles with Enhanced Electrocatalytic Activity
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离子液体辅助合成增强电催化活性的Au-Pd双金属颗粒
DOI：
10.1002/chem.201300028
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发表时间：
2013-05-01
影响因子：
4.3
通讯作者：
Luan, Yuxia
中科院分区：
文献类型：
--
作者：
Li, Zhonghao;Li, Rui;Luan, Yuxia
采用离子液体辅助的方法，在室温下实现了Au-Pd纳米粒子的形貌和组成控制合成。通过本路线可以很好地控制合成颗粒的形态，例如具有核壳结构的纳米片构建的球体、纳米颗粒构建的球体和纳米颗粒构建的枝晶。离子液体被发现在这些有趣的粒子的形成中起着关键作用。此外，颗粒的组成（Au：Pd）可以通过进料溶液中金属前体的摩尔比来调节。Au-Pd纳米粒子对乙醇和甲酸的氧化具有很高的电催化活性。循环伏安法研究表明，所制备的Au-Pd纳米粒子对H2 O2具有良好的电活性，可作为电流型H2 O2传感器。
Morphology- and composition-controlled synthesis of Au-Pd bimetallic particles was realized by a facile ionic liquid assisted route at room temperature. The morphologies of the synthesized particles, such as nanoflake-constructed spheres with a core-shell structure, nanoparticle-constructed spheres, and nanoparticle-constructed dendrites, could be well controlled by the present route. The ionic liquid was found to play a key role in the formation of these interesting particles. Moreover, the composition (Au:Pd) of the particles could be modulated by means of the molar ratio of the metal precursors in the feeding solutions. The Au-Pd bimetallic particles exhibit high electrocatalytic activity toward oxidation of ethanol and formic acid. Furthermore, cyclic voltammetric studies on the as-prepared Au-Pd bimetallic particles revealed good electroactivity for H2O2, which results in an effective amperometric H2O2 sensor.