Mechanism of the Transfer of AuCl4- and TOA+ Ions Across the Liquid/Liquid Interface

被引:7
|
作者
Duong, Quynh [1 ]
Tan, Yunshi [1 ]
Corey, Jason [1 ]
Anz, Samir [1 ]
Sun, Peng [1 ]
机构
[1] Calif State Polytech Univ Pomona, Dept Chem & Biochem, Pomona, CA 91768 USA
关键词
GOLD NANOPARTICLES; WATER; ELECTROCHEMISTRY; NUCLEATION;
D O I
10.1021/jp512909t
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The Brust-Schiffrin (BS) two-phase method to synthesize nanoparticles has been widely used. In this method, the transfer of tetrachloroaurate (AuCl4-) from aqueous phase into organic phase is the first step. However, the mechanism of the transfer of AuCl4- is still not clear. In this paper, we studied the mechanism of the transfer of AuCl4- across a micrometer-sized interface between two immiscible electrolyte solutions (ITIES). Our results revealed that the presence of TOA(+) can enhance the transfer of AuCl4- from aqueous phase into organic phase. The enhanced transfer of AuCl4- is explained by the shuttling mechanism which has been developed by Laforge et al.
引用
收藏
页码:10365 / 10369
页数:5
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