Humidity Sensing Properties of Surface Modified Polyaniline Metal Oxide Composites

被引：38

作者：

Nagaraju, S. C. ^{[1
,2
]}

Roy, Aashis S. ^{[3
]}

Kumar, J. B. Prasanna ^{[4
]}

Anilkumar, Koppalkar R. ^{[5
]}

Ramagopal, G. ^{[6
]}

机构：

[1] Bharathiar Univ, Dept Phys, Coimbatore 641046, Tamil Nadu, India

[2] Vidyavahini Coll, Dept Phys, SIT Extens, Tumkur 572102, Karnataka, India

[3] Gulbarga Univ, Dept Mat Sci, Gulbarga 585106, Karnataka, India

[4] GFGC Tumkur, Dept Phys, Tumkur 572102, Karnataka, India

[5] GFG Degree Coll, Dept Phys, Gulbarga 585228, Karnataka, India

[6] Maharanis Sci Coll, Dept Phys, Palace Rd, Bangalore 560001, Karnataka, India

来源：

JOURNAL OF ENGINEERING | 2014年 / 2014卷

关键词：

D O I：

10.1155/2014/925020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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, Xray 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 (alpha) behavior as a function of temperature, which is characteristic behavior of semiconductingmaterials. 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.

引用

页数：8

共 33 条

[1] Humidity sensing properties of (Ba, Sr) TiO3 thin films grown by hydrothermal-electrochemical method [J].

Agarwal, S ;

Sharma, GL .

SENSORS AND ACTUATORS B-CHEMICAL, 2002, 85 (03) :205-211

[2] Synthesis of polypyrrole/zinc oxide composites and study of their structural, thermal and electrical properties [J].

Batool, Aisha ;

Kanwal, Farah ;

Imran, Muhammad ;

Jamil, Tahir ;

Siddiqi, Saadat Anwar .

SYNTHETIC METALS, 2012, 161 (23-24) :2753-2758

[3] Use of poly(o-toluidine)/ZrO2 nanocomposite coatings for the corrosion protection of mild steel [J].

Chaudhari, Sudeshna ;

Patil, P. P. ;

Mandale, A. B. ;

Patil, K. R. ;

Sainkar, S. R. .

JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 106 (01) :220-229

[4] Chemical in situ polymerization of polypyrrole on poly(methyl metacrylate) substrate [J].

Ferenets, Marju ;

Harlin, Ali .

THIN SOLID FILMS, 2007, 515 (13) :5324-5328

[5] Characterization and gas sensitivity study of polyaniline/SnO2 hybrid material prepared by hydrothermal route [J].

Geng, Lina ;

Zhao, Yingqiang ;

Huang, Xueliang ;

Wang, Shurong ;

Zhang, Shoumin ;

Wu, Shihua .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 120 (02) :568-572

[6] Synthesis and characterization of chemical structure and thermal stability of nanometer size polyaniline and polypyrrole coated on rice husk [J].

Ghorbani, Mohsen ;

Eisazadeh, Hossein .

SYNTHETIC METALS, 2012, 162 (5-6) :527-530

[7]

Kim H. M., 2000, J KOREAN PHYS SOC, V36, P71

[8] Humidity sensors: A review [J].

Lee, CY ;

Lee, GB .

SENSOR LETTERS, 2005, 3 (01) :1-15

[9] Low Frequency AC Conduction in Polyaniline/Zinc Tungstate (PANI/ZnWO4) Composites [J].

Machappa, T. ;

Prasad, M. V. N. Ambika .

FERROELECTRICS, 2009, 392 :71-80

[10] Flexible humidity and temperature sensor based on cellulose-polypyrrole nanocomposite [J].

Mahadeva, Suresha K. ;

Yun, Sungryul ;

Kim, Jaehwan .

SENSORS AND ACTUATORS A-PHYSICAL, 2011, 165 (02) :194-199

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