摘要
分别采用晶种生长法和快速共还原法制备得到了AuPt合金。采用晶种生长法制备AuPt合金时,Au晶种的尺寸对Au-Pt双金属结构的形成有关键性影响,当用小尺寸的Au纳米颗粒(3nm)作为晶种时才会形成AuPt合金结构,当Au晶种尺寸较小时,由于颗粒内纳米尺度的原子快速扩散导致合金结构的形成。高温下油胺对Au和Pt前体的快速共还原会使Au和Pt在极短的时间内同时得到还原,避免了两相的分离,得到了AuPt合金结构。
AuPt alloy nanoparticles(NPs)were synthesized by a seeded growth method and a fast co-reduction method.It was found that the dimension of Au seeds is a key factor in the structure formation of AuPt alloy NPs while using seeded growth method.Small Au seeds(3 nm)reduced by butyllithium favored the formation of AuPt alloy structure due to the fast atomic diffusion inside nanoparticles.Fast co-reduction of Au and Pt precursors by oleyamine in the high temperature resulted in AuPt alloy structure as it avoided the separation of Au phase and Pt phase.
作者
陈有为
谭曜
刘汉伟
黄姣
陈丹超
张威波
周生虎
CHEN Youwei;TAN Yao;LIU Hanwei;HUANG Jiao;CHEN Danchao;ZHANG Weibo;ZHOU Shenghu(Ningbo Academy of Science and Technology for Inspection and Quarantine,Ningbo 315012;Ningbo Entry-Exit Inspection and Quarantine Bureau Technical Center,Ningbo 315012;Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2017年第A01期11-14,18,共5页
Materials Reports
基金
宁波市自然科学基金(2013A610076)
国家质量监督检验检疫总局科技计划项目(2016IK172
2015IK180)
宁波出入境检验检疫局科技计划项目(甬K02-2015
甬K01-2015)
关键词
AuPt合金
晶种生长法
快速共还原法
纳米颗粒
AuPt alloy nanoparticles
seeded growth method
fast co-reduction methods
nanoparticles
