Synthesis of Ag-Au bimetallic film at liquid-liquid interface and its application in vapor sensing

被引：3

作者：

Pasricha, Renu ^{[1
]}

Gupta, Shweta ^{[1
]}

Sastry, M. ^{[2
]}

Singh, Nahar ^{[1
]}

Gupta, Prabhat ^{[1
]}

机构：

[1] Natl Phys Lab, Mat Characterizat Div, New Delhi 110012, India

[2] Tata Chem Innovat Ctr, Pune 45, Maharashtra, India

来源：

THIN SOLID FILMS | 2010年 / 519卷 / 03期

关键词：

Bimetallic film; Liquid-liquid interface; I-V measurements; Gas sensing; FUNCTIONALIZED GOLD NANOPARTICLES; METAL-FILMS; SILVER NANOPARTICLES; CLUSTERS; NANOSTRUCTURES; CONSTRUCTION; MULTILAYERS; ALLOY; PD;

D O I：

10.1016/j.tsf.2010.08.078

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate a novel process for preparing densely packed film of silver nanoparticles at the liquid-liquid interface followed by a transmetallation reaction with gold ion to yield a film of bimetallic nanoparticles. Films of assembled silver as well as Ag-Au bimetallic were characterized by UV-vis-spectroscopy, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) analysis. I-V measurement shows linear behavior for both the films with ca. five orders of magnitude drop in resistance for the Ag-Au bimetallic film. Temperature dependent I-V measurement revealed a semiconductor to metal transition after transmetallation reaction. The films where checked for their potential application in chemical vapor sensing to ammonia vapors. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1248 / 1251

页数：4

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