PS-b-PEO模板法制备Pt纳米线

Preparation of Platinum Nanowires by Polystyrene-Poly(ethylene oxide)Diblock Copolymer Template Method

以PS-b-PEO纳米孔膜为基体电极,采用电沉积技术制备了Pt纳米线,用扫描电化学显微镜(SECM)、扫描电镜(SEM)和X-射线能谱(EDS)分析法表征了基体电极和Pt纳米线。利用循环伏安法考察了Pt纳米线的电化学性能。实验结果表明,Pt纳米线对甲酸氧化表现出优异的电催化活性。此外,Pt纳米线具有良好的稳定性和重现性,可望用于实际样品中甲酸的测定。

Novel platinum nanowires arrays（Pt NWs） were fabricated by electrochemical deposition with polystyrene-poly（ethylene oxide） diblock copolymer （PS-b-PEO） nano-porous membrane as the matrix electrode. The prepared matrix electrode and Pt NWs were characterized by scanning electrochemical microscope（SECM）, scanning electron microscope （SEM） and X-ray energy dispersive spectroscopy （EDS）. The electrochemical behaviors of the Pt NWs were investigated by cyclic voltammetry. The results showed that the Pt NWs had an excellent electro-catalytic activity for formic acid oxidation. Moreover, the Pt NWs also showed high stability and good reproducibility and can be expected to use in the analysis of formic acid in real samples.