SYNTHESIS AND EXAMINATION OF HEXAGONAL TUNGSTEN OXIDE NANOCRYSTALS FOR ELECTROCHROMIC AND SENSING APPLICATIONS `.23020``0`..3b ch

被引：8

作者：

Balazsi, Csaba ^{[1
]}

Sedlackova, Katarina ^{[1
]}

Pfeifer, Judit ^{[1
]}

Toth, Attila L. ^{[1
]}

Zayim, Esra Ozkan ^{[2
]}

Szilagyi, Imre Miklos ^{[3
]}

Wang, Lisheng ^{[4
]}

Kalyanasundaram, Krithika ^{[4
]}

Gouma, Pelagia-Irene ^{[4
]}

机构：

[1] Hungarian Acad Sci, Ceram & Composites Lab, Res Inst Tech Phys & Mat Sci, Konkoly Thege 29-33, H-1121 Budapest, Hungary

[2] Istanbul Tech Univ, Fac Sci & Letters, Dept Phys, TR-80626 Istanbul, Turkey

[3] Tech Univ Budapest, Hungarian Acad Sci, Mat Struct & Modeling Res Grp, H-1111 Budapest, Hungary

[4] Dept Mat Sci & Engn, Stony Brook, NY 11794 USA

来源：

SENSORS FOR ENVIRONMENT, HEALTH AND SECURITY: ADVANCED MATERIALS AND TECHNOLOGIES | 2009年

关键词：

soft chemical synthesis; tungsten oxide; sensor; cyclic voltammetry; GAS SENSOR RESPONSE; WO3; THICK-FILM; NO2; DEPOSITION; SODIUM;

D O I：

10.1007/978-1-4020-9009-7_5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Tungsten oxides are among the most used materials in hazardous gas detection. In this work, a soft chemical nanocrystalline processing route was demonstrated for the preparation of hexagonal tungsten oxides. The structure of parent phases was studied by scanning and transmission electron microscopy and by X-ray diffraction. Electrochemical behavior of the films was determined by atomic force microscopy and cyclic voltammetry. The ion insertion properties of the tungsten-based films show a clear dependence oil the presence of structural water and on the close packed structure. Sensing properties of the tungsten oxides were tested toward gaseous ammonia at various temperatures. The layers were found to be sensitive in the concentration range of 50-500 ppm at the temperature of 300 degrees C.

引用

页码：77 / +

页数：5

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