Ammonia Sensing Properties of Silver Nanocomposite with Polypyrrole

被引：2

作者：

Karmakar, N. S. ^{[1
]}

Kothari, D. C. ^{[1
]}

Bhat, N. V. ^{[1
]}

机构：

[1] Univ Mumbai, Ctr Nanosci & Nanotechnol, Bombay 400098, Maharashtra, India

来源：

SOLID STATE PHYSICS, VOL 57 | 2013年 / 1512卷

关键词：

Silver-polypyrrole nanocomposites; electrical conductivity; gas sensor; FABRICATION;

D O I：

10.1063/1.4791027

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Silver-polypyrrole nanocomposite thin film was prepared by a novel method. UV-Vis spectroscopic studies confirmed the presence of silver nanoparticles and also polymerization of pyrrole surrounding the silver nanoparticles. All the important X-ray diffraction peaks corresponding to silver were present in the composites. The silver nanoparticles and its composites with polypyrrole were observed by SEM and TEM. Electrical conductivity measurements were carried out using two probe method and it was found that the conductivity of nanocomposites is 10(-5) S/cm. It was found that functionalized silver nanoparticles can act as efficient gas sensor for ammonia. The present result of the increase in conductivity with ammonia exposure is in contrast with the previously reported results of the decrease in conductivity.

引用

页码：294 / 295

页数：2

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