Oxygen sensing performance of Nb-doped TiO2 thin film with porous structure

被引：26

作者：

Gan, Linhui ^{[1
]}

Wu, Congcong ^{[1
]}

Tan, Yuan ^{[1
]}

Chi, Bo ^{[1
]}

Pu, Jian ^{[1
]}

Jian, Li ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Ctr Fuel Cell Innovat, Wuhan 430074, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2014年 / 585卷

基金：

中国国家自然科学基金;

关键词：

Titania; Nb-doping; Oxygen sensing; Sol-gel method; GAS SENSOR; MECHANISM; TEMPERATURE; NANOWIRES; COATINGS; ANATASE;

D O I：

10.1016/j.jallcom.2013.09.161

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this paper, Nb-doped titanium dioxide (TiO2) porous thin films in application of oxygen sensors were studied. A facile sol-gel method was used to prepare the undoped and Nb-doped TiO2 thin films. The microstructure and oxygen-sensing behavior were investigated. The results indicate that Nb-doping can retard the phase transition from anatase to rutile and reduce the grain size. The oxygen responses of the thin film can be greatly improved by Nb-doping, which are 73.2 and 78.7 for sample with 6% Nb-doping measured at 700 degrees C in the atmosphere with 2% and 20.9% oxygen, while those for undoped TiO2 are only 6.5 and 6.6 in the same condition. The 6% Nb-doped TiO2 thin film also shows the fastest response time of only 1.1 s at 700 degrees C, which is only less than 1/10 of those for the undoped TiO2 thin film. (C) 2013 Elsevier B. V. All rights reserved.

引用

页码：729 / 733

页数：5

共 32 条

[1] The development of gas sensor for carbon monoxide monitoring using nanostructure of Nb-TiO2 [J].

Anukunprasert, T ;

Saiwan, C ;

Traversa, E .

SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2005, 6 (3-4) :359-363

[2] XPS study of Nb-doped oxygen sensing TiO2 thin films prepared by sol-gel method [J].

Atashbar, MZ ;

Sun, HT ;

Gong, B ;

Wlodarski, W ;

Lamb, R .

THIN SOLID FILMS, 1998, 326 (1-2) :238-244

[3] Sensing properties of sprayed antimony doped tin oxide thin films: Solution molarity [J].

Babar, A. R. ;

Shinde, S. S. ;

Moholkar, A. V. ;

Bhosale, C. H. ;

Kim, J. H. ;

Rajpure, K. Y. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (06) :3108-3115

[4] Nanostructured pure and Nb-doped TiO2 as thick film gas sensors for environmental monitoring [J].

Carotta, MC ;

Ferroni, M ;

Gnani, D ;

Guidi, V ;

Merli, M ;

Martinelli, G ;

Casale, MC ;

Notaro, M .

SENSORS AND ACTUATORS B-CHEMICAL, 1999, 58 (1-3) :310-317

[5] Effects of palladium coatings on oxygen sensors of titanium dioxide thin films [J].

Castaneda, L. .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2007, 139 (2-3) :149-154

[6] Effects of Ta/Nb-doping on titania-based thin films for gas-sensing [J].

Comini, E ;

Ferroni, M ;

Guidi, V ;

Vomiero, A ;

Merli, PG ;

Morandi, V ;

Sacerdoti, M ;

Della Mea, G ;

Sberveglieri, G .

SENSORS AND ACTUATORS B-CHEMICAL, 2005, 108 (1-2) :21-28

[7] Controlled formation of highly organized mesoporous titania thin films:: From mesostructured hybrids to mesoporous nanoanatase TiO2 [J].

Crepaldi, EL ;

Soler-Illia, GJDA ;

Grosso, D ;

Cagnol, F ;

Ribot, F ;

Sanchez, C .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (32) :9770-9786

[8] Preparation of nano-scale titania thick film and its oxygen sensitivity [J].

Gao, L ;

Li, Q ;

Song, Z ;

Wang, J .

SENSORS AND ACTUATORS B-CHEMICAL, 2000, 71 (03) :179-183

[9]

Grosso D, 2001, ADV MATER, V13, P1085, DOI 10.1002/1521-4095(200107)13:14<1085::AID-ADMA1085>3.0.CO

[10]

2-Q

← 1 2 3 4 →