CO2 SENSING MECHANISM OF LA2O3-LOADED SNO2

被引：6

作者：

MIZUNO, N

YOSHIOKA, T

KATO, K

IWAMOTO, M

机构：

来源：

CHEMISTRY LETTERS | 1992年 / 12期

关键词：

D O I：

10.1246/cl.1992.2467

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The title mechanism was investigated by temperature programmed desorption (TPD). The TPD profile from La2O3-loaded SnO2 consisted of two CO2 peaks (450 K (alpha) and 650 K (beta)) and one O2 ascent. From the correlations among the amounts of beta-CO2 and O2 desorbed, the amount of La2O3 loaded, and the sensitivity to CO2, it was suggested that the decrease in the resistance of the sensor results from the adsorption of beta-CO2 and the desorption of O- or O2- to generate oxygen molecules and free electrons.

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页码：2467 / 2470

页数：4

相关论文

共 13 条

[1]

GAUTHIER M, 1983, SEP P INT M CHEM SEN, P353

[2] MIXED-OXIDE CAPACITOR OF CUO-BATIO3 AS A NEW TYPE CO2 GAS SENSOR [J].

ISHIHARA, T ;

KOMETANI, K ;

MIZUHARA, Y ;

TAKITA, Y .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (03) :613-618

[3] TIN DIOXIDE GAS SENSORS .2. THE ROLE OF SURFACE ADDITIVES [J].

MCALEER, JF ;

MOSELEY, PT ;

NORRIS, JOW ;

WILLIAMS, DE ;

TOFIELD, BC .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1988, 84 :441-457

[4] CARBON-DIOXIDE SENSOR USING SODIUM-ION CONDUCTOR AND BINARY CARBONATE AUXILIARY ELECTRODE [J].

MIURA, N ;

YAO, S ;

SHIMIZU, Y ;

YAMAZOE, N .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1992, 139 (05) :1384-1388

[5] A REMARKABLE SENSITIVITY OF CAO-LOADED IN2O3 ELEMENT TO CO2 GAS IN THE PRESENCE OF WATER-VAPOR [J].

MIZUNO, N ;

KATO, K ;

YOSHIOKA, T ;

IWAMOTO, M .

CHEMISTRY LETTERS, 1992, (09) :1683-1684

[6] A NEW TYPE OF CO2 GAS SENSOR COMPRISING POROUS HYDROXYAPATITE CERAMICS [J].

NAGAI, M ;

NISHINO, T ;

SAEKI, T .

SENSORS AND ACTUATORS, 1988, 15 (02) :145-151

[7] CO2 GAS SENSOR USING BETA-AL2O3 AND METAL CARBONATE [J].

OGATA, T ;

FUJITSU, S ;

MIYAYAMA, M ;

KOUMOTO, K ;

YANAGIDA, H .

JOURNAL OF MATERIALS SCIENCE LETTERS, 1986, 5 (03) :285-286

[8]

PANNETIER G, 1965, B SOC CHIM FR, P318

[9] CARBON-DIOXIDE SENSOR CONSISTING OF K2CO3-POLYETHYLENE GLYCOL SOLUTION SUPPORTED ON POROUS CERAMICS .1. MEASUREMENTS OF CARBON-DIOXIDE SENSING CHARACTERISTICS [J].

SHIMIZU, Y ;

KOMORI, K ;

EGASHIRA, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1989, 136 (08) :2256-2260

[10] CONDUCTIVITY CHANGE OF SNO2 WITH CO2 ADSORPTION [J].

TAMAKI, J ;

AKIYAMA, M ;

XU, CN ;

MIURA, N ;

YAMAZOE, N .

CHEMISTRY LETTERS, 1990, (07) :1243-1246