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

Renu Pasricha; Shweta Gupta; M. Sastry; Nahar Singh; Prabhat Gupta

doi:10.1016/j.tsf.2010.08.078

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

Renu Pasricha, Shweta Gupta, M. Sastry, Nahar Singh, Prabhat Gupta

Research output: Contribution to journal › Article › Research › peer-review

3 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	1248-1251
Number of pages	4
Journal	Thin Solid Films
Volume	519
Issue number	3
DOIs	https://doi.org/10.1016/j.tsf.2010.08.078
Publication status	Published - 30 Nov 2010
Externally published	Yes

Keywords

Bimetallic film
Gas sensing
I-V measurements
Liquid-liquid interface

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10.1016/j.tsf.2010.08.078

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

abstract = "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.",

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T1 - Synthesis of Ag-Au bimetallic film at liquid-liquid interface and its application in vapor sensing

AU - Pasricha, Renu

AU - Gupta, Shweta

AU - Sastry, M.

AU - Singh, Nahar

AU - Gupta, Prabhat

PY - 2010/11/30

Y1 - 2010/11/30

N2 - 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.

AB - 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.

KW - Bimetallic film

KW - Gas sensing

KW - I-V measurements

KW - Liquid-liquid interface

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DO - 10.1016/j.tsf.2010.08.078

M3 - Article

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JO - Thin Solid Films

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

Abstract

Keywords

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