Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites
Polyaniline- (PANI) praseodymium Oxide (Pr2O3) composites have been synthesized by in situ polymerization method with different weight percentages. The synthesized composites have been characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. The t...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Journal of Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/925020 |
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| author | S. C. Nagaraju Aashis S. Roy J. B. Prasanna Kumar Koppalkar R. Anilkumar G. Ramagopal |
| author_facet | S. C. Nagaraju Aashis S. Roy J. B. Prasanna Kumar Koppalkar R. Anilkumar G. Ramagopal |
| author_sort | S. C. Nagaraju |
| collection | DOAJ |
| description | Polyaniline- (PANI) praseodymium Oxide (Pr2O3) composites have been synthesized by in situ polymerization method with different weight percentages. The synthesized composites have been characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. The temperature dependent conductivity shows that the conductivity is due to the hopping of polarons and bipolarons. These composites show negative thermal coefficient (α) behavior as a function of temperature, which is characteristic behavior of semiconducting materials. Sensor studies have been carried out by two-probe method and found that the sensitivity increases with increase in % RH. It is noticed that stability increase is due to the presence of Pr2O3 in polyaniline up to 30 wt%. A fast recovery and response time along with high sensitivity make these composites suitable for humidity sensors. |
| format | Article |
| id | doaj-art-10cac662a12e4db7840cf98a311b6dfc |
| institution | Kabale University |
| issn | 2314-4904 2314-4912 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj-art-10cac662a12e4db7840cf98a311b6dfc2025-02-03T01:10:27ZengWileyJournal of Engineering2314-49042314-49122014-01-01201410.1155/2014/925020925020Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide CompositesS. C. Nagaraju0Aashis S. Roy1J. B. Prasanna Kumar2Koppalkar R. Anilkumar3G. Ramagopal4Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu 641046, IndiaDepartment of Materials Science, Gulbarga University, Gulbarga, Karnataka 585106, IndiaDepartment of Physics, GFGC Tumkur, Tumkur, Karnataka 572102, IndiaDepartment of Physics, GFG Degree College, Shahabad, Gulbarga, Karnataka 585228, IndiaDepartment of Physics, Maharani’s Science College, Palace Road, Bangalore, Karnataka 560 001, IndiaPolyaniline- (PANI) praseodymium Oxide (Pr2O3) composites have been synthesized by in situ polymerization method with different weight percentages. The synthesized composites have been characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy. The temperature dependent conductivity shows that the conductivity is due to the hopping of polarons and bipolarons. These composites show negative thermal coefficient (α) behavior as a function of temperature, which is characteristic behavior of semiconducting materials. Sensor studies have been carried out by two-probe method and found that the sensitivity increases with increase in % RH. It is noticed that stability increase is due to the presence of Pr2O3 in polyaniline up to 30 wt%. A fast recovery and response time along with high sensitivity make these composites suitable for humidity sensors.http://dx.doi.org/10.1155/2014/925020 |
| spellingShingle | S. C. Nagaraju Aashis S. Roy J. B. Prasanna Kumar Koppalkar R. Anilkumar G. Ramagopal Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites Journal of Engineering |
| title | Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites |
| title_full | Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites |
| title_fullStr | Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites |
| title_full_unstemmed | Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites |
| title_short | Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites |
| title_sort | humidity sensing properties of surface modified polyaniline metal oxide composites |
| url | http://dx.doi.org/10.1155/2014/925020 |
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