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10.3390/s17091971
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Review

TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects

by
Yuan Wang
1,2,*,†,
Tao Wu
1,2,†,
Yun Zhou
1,3,
Chuanmin Meng
1,
Wenjun Zhu
1 and
Lixin Liu
1,*
1
National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, PO Box 919-111, Mianyang 621900, Sichuan, China
2
School of National Defense Science and Technology, Southwest University for Science and Technology, Mianyang 621900, Sichuan, China
3
School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, Hunan, China
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally to this work.
Sensors 2017, 17(9), 1971; https://doi.org/10.3390/s17091971
Submission received: 2 July 2017 / Revised: 19 August 2017 / Accepted: 25 August 2017 / Published: 27 August 2017
(This article belongs to the Collection Gas Sensors)
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Abstract

Gas sensors based on titanium dioxide (TiO2) have attracted much public attention during the past decades due to their excellent potential for applications in environmental pollution remediation, transportation industries, personal safety, biology, and medicine. Numerous efforts have therefore been devoted to improving the sensing performance of TiO2. In those effects, the construct of nanoheterostructures is a promising tactic in gas sensing modification, which shows superior sensing performance to that of the single component-based sensors. In this review, we briefly summarize and highlight the development of TiO2-based heterostructure gas sensing materials with diverse models, including semiconductor/semiconductor nanoheterostructures, noble metal/semiconductor nanoheterostructures, carbon-group-materials/semiconductor nano- heterostructures, and organic/inorganic nanoheterostructures, which have been investigated for effective enhancement of gas sensing properties through the increase of sensitivity, selectivity, and stability, decrease of optimal work temperature and response/recovery time, and minimization of detectable levels.
Keywords: TiO2; nanoheterostructures; gas sensor TiO2; nanoheterostructures; gas sensor

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MDPI and ACS Style

Wang, Y.; Wu, T.; Zhou, Y.; Meng, C.; Zhu, W.; Liu, L. TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects. Sensors 2017, 17, 1971. https://doi.org/10.3390/s17091971

AMA Style

Wang Y, Wu T, Zhou Y, Meng C, Zhu W, Liu L. TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects. Sensors. 2017; 17(9):1971. https://doi.org/10.3390/s17091971

Chicago/Turabian Style

Wang, Yuan, Tao Wu, Yun Zhou, Chuanmin Meng, Wenjun Zhu, and Lixin Liu. 2017. "TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects" Sensors 17, no. 9: 1971. https://doi.org/10.3390/s17091971

APA Style

Wang, Y., Wu, T., Zhou, Y., Meng, C., Zhu, W., & Liu, L. (2017). TiO2-Based Nanoheterostructures for Promoting Gas Sensitivity Performance: Designs, Developments, and Prospects. Sensors, 17(9), 1971. https://doi.org/10.3390/s17091971

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