摘要
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。
Polyelectrolyte multilayers were assembled via the layer-by-layer technique from poly（diallyldimethylammonium chloride）（PDDA） and poly（styrene sulfonate）（PSS）.AuCl4^- and PtCl6^2-,precursor ions for Au and Pt,respectively,were exchanged into the multilayers and then reduced in situ via a sequential anion exchange/reduction process to produce Au@Pt bimetallic nanoparticles in the multilayer films.The core-shell structure of the bimetallic nanoparticles produced was confirmed using ultraviolet-visible absorption spectroscopy（UV-Vis）,transmission electron microscopy（TEM） and energy dispersive X-ray spectroscopy（EDX）.These core-shell nanoparticles may find application in the fields of electrocatalysis and fuel cells.
出处
《应用化学》
CAS
CSCD
北大核心
2012年第12期1433-1437,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目(21174145)
关键词
聚电解质多层膜
双金属纳米粒子
核壳
polyelectrolyte multilayer
bimetallic nanoparticles
core-shell
