中文摘要：

以氯化钯（PdCl2）为金属前驱体,利用简易可见光辅助法制备具有单晶和多重孪晶结构的钯纳米颗粒。借助高分辨透射电镜（HRTEM）,可见分光光度计以及循环伏安法研究了钯纳米粒子纳米结构和电化学性质。结果表明,不同纳米结构的形成取决于还原速率的控制。与多重孪晶结构的钯纳米颗粒不同,单晶钯纳米粒子在可见光区域表现了表面等离子共振吸收峰。通过比较单晶和多重孪晶钯纳米粒子氧化过程的电化学参数,表明多重孪晶钯纳米粒子对乙醇有较好的电催化活性和抗中毒能力。

英文摘要：

A facile visible-light-assisted method has been demonstrated to synthesize palladium（Pd） nanoparticles（NPs） with single-crystalline multiple-twinned structures by reduction of PdCl2. The structures and electrochemical properties of Pd NPs were investigated by high resolution transmission electron microscopy（HRTEM）, UV-visible spectroscopy, and cyclic voltammetry（CV）. The results show that the formation of different nanostructures depends on the control of reduction rate. Unlike multiple-twinned Pd NPs, single-crystalline Pd NPs exhibit surface plasmon resonance（SPR） peaks in the visible region. By comparison of the electrochemical parameters in the oxidation process of Pd NPs with single-crystalline and multiple-twinned structures, multiple-twinned Pd NPs exhibit the better electrocatalytic activity and anti-poisoning capability for ethanol oxidation.