单晶和多重栾晶纳米钯的可见光简易合成及其光学、电学性质

Facile visible-light-assisted synthesis, optical, and electrochemical propertiesSof palladium nanoparticles with single-crystalline and multiple-twinned structures

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。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。纳米钯粒子的电化学性质也采用循环伏安法进行了研究。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。

Abstract:

A facile visible-light-assisted method has been demonstrated to synthesize palladium (Pd) nanoparticles (NPs) with single-crystalline and multiple-twinned structures by reduction of PdCl2. The results showed that the formation of different nanostructures depend on reduction rate of the control. Unlike multiple-twinned Pd NPs, single-crystalline Pd NPs exhibit surface plasmon resonance (SPR) peaks in the visible region. Electrochemical properties of Pd NPs have been also investigated by cyclic voltammetry (CV). 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.