Ultrathin Au-Alloy Nanowires at the Liquid-Liquid Interface

被引：35

作者：

Chatterjee, Dipanwita ^{[1
]}

Shetty, Shwetha ^{[1
]}

Mueller-Caspary, Knut ^{[2
]}

Grieb, Tim ^{[2
]}

Krause, Florian F. ^{[2
]}

Schowalter, Marco ^{[2
]}

Rosenauer, Andreas ^{[2
]}

Ravishankar, Narayanan ^{[1
]}

机构：

[1] Indian Inst Sci, Mat Res Ctr, Bangalore 560012, Karnataka, India

[2] Univ Bremen, Otto Hahn Allee 1, D-28359 Bremen, Germany

来源：

NANO LETTERS | 2018年 / 18卷 / 03期

关键词：

Alloy nanowires; ultrathin nanowires; liquid-liquid interface reaction; stacking faults; twin boundary; electrocatalysis; methanol oxidation; ENHANCED CATALYTIC-ACTIVITY; ELECTROCATALYTIC ACTIVITY; FACILE SYNTHESIS; GOLD NANOWIRES; GROWTH; NANOPARTICLES; REDUCTION; COPPER; TUNABILITY; DEPOSITION;

D O I：

10.1021/acs.nanolett.7b05217

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultrathin bimetallic nanowires are of importance and interest for applications in electronic devices such as sensors and heterogeneous catalysts. In this work, we have designed a new, highly reproducible and generalized wet chemical method to synthesize uniform and monodispersed Au-based alloy (AuCu, AuPd, and AuPt) nanowires with tunable composition using microwave-assisted reduction at the liquid liquid interface. These ultrathin alloy nanowires are below 4 nm in diameter and about 2 mu m long. Detailed microstructural characterization shows that the wires have an face centred cubic (FCC) crystal structure, and they have low energy twin-boundary and stacking-fault defects along the growth direction. The wires exhibit remarkable thermal and mechanical stability that is critical for important applications. The alloy wires exhibit excellent electrocatalytic activity for methanol oxidation in an alkaline medium.

引用

页码：1903 / 1907

页数：5

共 39 条

[1] New Insights into Selective Heterogeneous Nucleation of Metal Nanoparticles on Oxides by Microwave-Assisted Reduction: Rapid Synthesis of High-Activity Supported Catalysts [J].