溶致液晶模板电化学沉积束状铂纳米材料

以非离子型三嵌段共聚物EO106PO70EO106 (F127)/正丁醇/氯铂酸水溶液构建的溶致液晶层状相为模板, 电化学沉积制备铂纳米材料. 透射电镜和扫描电镜显示, 产物为具有高长径比的纳米线形成的束状结构, 能量弥散谱与电极电势分析证实产物为铂单质, 而循环伏安测量表明产物的比表面积约为53 m2?g?1. 对影响产物形貌的因素和产物生成的可能机理进行了分析.

Electrochemical Deposition of Bunchy Nanostructured Platinum from Lyotropic Liquid Crystal Template

Nanostructured platinum is prepared by electrochemical deposition from the lamellar lyotropic liquid crystalline phase, composed of the nonionic triblock copolymer EO106PO70EO106 (F127), n-butanol and H2PtCl6 aqueous solution. Observations from the transmission or scanning electron microscopes illustrate that the deposit is of bunchy nanostructure, clustered by nanowires with high aspect ratio. Analysis on energy dispersion spectrum and the electrode potentials suggests the platinum metal nature of the deposit. The results of cyclic voltammetry show a high specific surface area (about 53 m2?g?1) for the deposit. The factors influencing the deposit morphology and the possible deposition mechanism are discussed.