An investigation of response time of TiO2 thin-film oxygen sensors

被引：65

作者：

Li, MQ

Chen, YF

机构：

[1] China Building Materials Academy

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1996年 / 32卷 / 01期

关键词：

titania; thin films; oxygen sensors;

D O I：

10.1016/0925-4005(96)80113-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

TiO2 thin-film oxygen sensors have been made by a sol-gel process. The TiO2 thin film is formed on an alumina rod by dip-coating of a titania sol derived from titanium butanol alkoxide solution in ethanol. The dependence of the resistance (R) of the TiO2 film on the oxygen partial pressure (P-O2) and temperature (T) has been determined. The TiO2 thin-film oxygen sensor possesses linear relations between lg(R) and lg(P-O2) with temperature-dependent slopes. The response time of the TiO2 thin-film sensor is shorter for an atmosphere change from oxygen rich to lean than that from oxygen lean to rich. The response time decreases with increasing temperature. A platinum coating on the TiO2 surface reduces the response time.

引用

页码：83 / 85

页数：3

共 7 条

[1]

BIRKEFELD LD, 1992, J AM CERAM SOC, V75, P2961

[2]

KIM YJ, 1993, J AM CERAM SOC, V76

[3] LOW AND HIGH-TEMPERATURE TIO2 OXYGEN SENSORS [J].

KIRNER, U ;

SCHIERBAUM, KD ;

GOPEL, W ;

LEIBOLD, B ;

NICOLOSO, N ;

WEPPNER, W ;

FISCHER, D ;

CHU, WF .

SENSORS AND ACTUATORS B-CHEMICAL, 1990, 1 (1-6) :103-107

[4]

MICHELI AL, 1984, AM CERAM SOC BULL, V63, P694

[5] PROTOTYPE STRUCTURE FOR SYSTEMATIC INVESTIGATIONS OF THIN-FILM GAS SENSORS [J].

SCHIERBAUM, KD ;

VAIHINGER, S ;

GOPEL, W ;

VANDENVLEKKERT, HH ;

KLOECK, B ;

DEROOIJ, NF .

SENSORS AND ACTUATORS B-CHEMICAL, 1990, 1 (1-6) :171-175

[6] SOL-GEL FABRICATION OF EPITAXIAL AND ORIENTED TIO2 THIN-FILMS [J].

SELVARAJ, U ;

PRASADARAO, AV ;

KOMARNENI, S ;

ROY, R .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1992, 75 (05) :1167-1170

[7]

TAKAMI A, 1988, AM CERAM SOC BULL, V67, P1956

← 1 →