Improvement of ammonia sensing properties of poly(pyrrole)-poly (n-methylpyrrole) composite by ion irradiation

被引：22

作者：

Kadam, S. B. ^{[1
]}

Datta, K. ^{[1
]}

Ghosh, P. ^{[1
]}

Kadam, A. B. ^{[1
,4
]}

Khirade, P. W. ^{[1
]}

Kumar, V. ^{[2
]}

Sonkawade, R. G. ^{[3
]}

Gambhire, A. B.

Lande, M. K. ^{[4
]}

Shirsat, M. D. ^{[1
]}

机构：

[1] Dr Babasaheb Ambedkar Marathwada Univ, Dept Phys, Intelligent Mat Res Lab, Aurangabad 431004, Maharashtra, India

[2] St Longowal Inst Engn & Technol, Dept Phys, Sangrur 148106, Punjab, India

[3] Inter Univ Accelerator Ctr, New Delhi 110067, India

[4] Dr Babasaheb Ambedkar Marathwada Univ, Dept Chem, Aurangabad 431004, Maharashtra, India

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2010年 / 100卷 / 04期

关键词：

POLYPYRROLE FILMS; PYRROLE; POLYMER; BEAM;

D O I：

10.1007/s00339-010-5705-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present investigation we have electrochemically synthesized polypyrrole-poly (n-methylpyrrole) composite film with optimized process parameters (viz. concentration of monomers and dopant, applied current density, deposition time, pH of electrolyte etc.) on platinum substrate. The composite film of polypyrrole-poly (n-methylpyrrole) was subjected to electrical, spectral and morphological characterizations and its sensing response to various concentration of ammonia was also studied. Later, the synthesized composite films were irradiated under high vacuum (similar to 5x10(-6) Torr) at room temperature with 85 MeV O7+ ion beam at various fluences from 1x10(5) to 1x10(7) ions/cm(2). We have observed remarkable improvements in electrical and morphological properties suitable for gas-sensing applications. The irradiated composite film was evaluated for the sensing of various concentrations of ammonia and excellent improvement in terms of sensitivity, lower detection limit and response time was observed.

引用

页码：1083 / 1088

页数：6

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