Pd纳米棒表面等离子共振增强CO电催化氧化性能研究

Surface Plasmon Resonance Enhanced CO Electrocatalysis Oxidation on Pd Nanorods

课题组通过液相还原法,以尿素和氯钯酸钠为前驱体,合成了长度为11.8 nm的Pd纳米棒,并利用CO作为模型分子,研究了表面等离共振(SPR)激发下Pd纳米棒表面的CO电催化氧化过程。在本实验中,光照会导致吸附物种的吸附量增至光照前的1.88倍,CO氧化反应动力学增至光照前的1.63倍。实验结果表明,SPR激发引起局部电场的增强,会促使金属表面吸附物种的吸附量增加,从而提升电催化活性。

In the paper,the 11.8 nm Pd nanorods(Pd NRs)were obtained by a simple surfactant-free synthesis method using urea and sodium chloropalladate as precursors.We performed the plasmonic electrocatalysis using CO as a probe molecule.Due to the illumination,adsorption increased to 1.88 times and CO oxidation kinetics increased to 1.63 times.The results indicated the enhancement of local electric field caused by SPR excitation could lead to an increase in the adsorption of adsorbed species on the metal surface,thus enhancing the electrocatalytic activity.