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Nano-Silver Mediated Polymerization of Pyrrole: Synthesis and Gas Sensing Properties of Polypyrrole (PPy)/Ag Nano-Composite

被引：50
作者：
Kate, Kunal H. [1 ]
Damkale, Shubhangi R. [1 ]
Khanna, P. K. [1 ]
Jain, G. H. [2 ]
机构：
[1] C MET, Nanosci Lab, Pune 411008, Maharashtra, India
[2] Arts Commerce & Sci Coll, Dept Phys, Nandgaon 423106, India
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2011年 / 11卷 / 09期
关键词：
Nano-Particles; Conducting Polymer; Microwave; Synthesis; Gas Sensor; THICK-FILM RESISTORS; INTERFACIAL POLYMERIZATION; NANOCOMPOSITES; SENSORS;
D O I：
10.1166/jnn.2011.4708
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Thermal polymerization of pyrrole was performed using silver nitrate as source of silver ions followed by its conversion to Polypyrrole (PPy)/Ag nano-comoposites without using any external oxidizing agent or solvent. The formation of PPy was monitored by UV-Visible absorption spectroscopy showing a band at similar to 464 nm. XRD measurement confirmed characteristic peaks for face centered cubic (fcc) silver and presence of PPy at 2 theta of similar to 23 degrees suggesting the formation of PPy/Ag nanocomposite. Transmission electron microscopy (TEM) images showed non-aggregated spherical Ag nano-particles of about 5-10 nm. PPy/Ag thick film acts as a NH(3) sensor at 100 degrees C, a H(2)S sensor at 250 degrees C and CO(2) sensor at 350 degrees C. The thick films showed capability to recognize various gases at different operating temperature.
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收藏
页码：7863 / 7869
页数：7
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