以聚二烯丙基二甲基氯化铵和聚苯乙烯磺酸钠为构筑单元,通过静电层层自组装制备了多层膜,利用薄膜中存在的抗衡阴离子,选择AuCl4-和PtCl26-作为Au和Pt的前驱体,通过连续的阴离子交换/还原,原位制备了Au-Pt双金属纳米粒子.紫外-可见分光光度法、透射电子显微镜和能量色散X射线能谱数据表明,在聚电解质多层薄膜中成功地制备了具有核壳结构的Au@Pt双金属纳米粒子.这种纳米粒子在电化学催化、燃料电池方面具有潜在的应用价值.
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