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Synthesis of Ag–Au bimetallic film at liquid–liquid interface and its application in vapor sensing by Renu Pasricha; Shweta Gupta; M. Sastry; Nahar Singh; Prabhat Gupta is a Engineering article available to read on EtoBox.

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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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Author

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

Publisher

Elsevier Science; Elsevier ; Elsevier Sequoia; Elsevier BV (ISSN 0040-6090)

Published

2010

Language

EN

Field

Engineering (Physical Sciences)