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

Linhui Gan; Congcong Wu; Yuan Tan; Bo Chi; Jian Pu; Li Jian

doi:10.1016/j.jallcom.2013.09.161

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

Linhui Gan, Congcong Wu, Yuan Tan, Bo Chi, Jian Pu, Li Jian

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

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°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°C, which is only less than 1/10 of those for the undoped TiO₂ thin film.

Original language	English (US)
Pages (from-to)	729-733
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	585
DOIs	https://doi.org/10.1016/j.jallcom.2013.09.161
State	Published - 2014

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{4a4aa7ba7364445694a7b94722cff077,

title = "Oxygen sensing performance of Nb-doped TiO2 thin film with porous structure",

abstract = "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°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°C, which is only less than 1/10 of those for the undoped TiO2 thin film.",

author = "Linhui Gan and Congcong Wu and Yuan Tan and Bo Chi and Jian Pu and Li Jian",

note = "Funding Information: This research is financially supported by National Natural Science Foundation of China ( 50902056 ). The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for samples measurement assistance.",

year = "2014",

doi = "10.1016/j.jallcom.2013.09.161",

language = "English (US)",

volume = "585",

pages = "729--733",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Oxygen sensing performance of Nb-doped TiO2 thin film with porous structure

AU - Gan, Linhui

AU - Wu, Congcong

AU - Tan, Yuan

AU - Chi, Bo

AU - Pu, Jian

AU - Jian, Li

N1 - Funding Information: This research is financially supported by National Natural Science Foundation of China ( 50902056 ). The authors would like to thank Materials Characterization Center of Huazhong University of Science and Technology for samples measurement assistance.

PY - 2014

Y1 - 2014

N2 - 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°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°C, which is only less than 1/10 of those for the undoped TiO2 thin film.

AB - 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°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°C, which is only less than 1/10 of those for the undoped TiO2 thin film.

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JO - Journal of Alloys and Compounds

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