采用电位置换反应以及化学还原法制备了单分散PTnI纳米粒子,循环伏安结果显示该纳米粒子在0.1MOl·l-1硫酸介质中对CO的氧化表现出比本体PT电极更好的电催化活性.以CO为探针分子,采用电化学原位红外光谱研究了PTnI纳米粒子上的特殊红外光学性能.结果表明,PTnI纳米粒子无论是在玻碳电极还是在金电极上,均表现出对称的双极谱峰,同时给出很强的增强效应.论文研究结果有助于进一步了解低维纳米材料特殊红外性能的本质.Monodispersed PtNi nanoparticles were synthesized by galvanic displacement reaction and chemical reduction.The monodispersed PtNi nanoparticles demonstrate, by cyclic voltammetry, enhanced electrocatalytic properties for CO oxidation in 0.1 mol·L-1 H2SO4 solution compared with bulk Pt electrode.In situ electrochemical Fourier transform infrared(FTIR) spectroscopy using CO as the probe molecule was studied.The CO adsorbed on either the PtNi/GC(glassy carbon) electrode or PtNi/Au electrode exhibits characteristics of a symmetric bipolar IR feature with a strong enhancement factor.The results of this paper contribute to the understanding of the special properties and origin of the anomalous IR properties of lowdimensional nanomaterials.supportedbytheNationalNaturalScienceFoundationofChina(21229301;21403126); ResearchFoundationofEducationBureauofHubeiProvince;China(D20131302)~
