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Journal of Materials Science

, Volume 52, Issue 3, pp 1561–1572 | Cite as

Synthesis of MoO3/WO3 composite nanostructures for highly sensitive ethanol and acetone detection

  • Yongjiao Sun
  • Lin Chen
  • Ying Wang
  • Zhenting Zhao
  • Pengwei Li
  • Wendong Zhang
  • Yamin Leprince-Wang
  • Jie Hu
Original Paper

Abstract

In this paper, different contents of molybdenum oxide/tungsten oxide (MoO3/WO3) composite nanostructures were synthesized by hydrothermal method. Field emission scanning electron microscopy images revealed that the morphologies of WO3 nanostructures were significantly influenced by the Mo amount. Furthermore, the introduction strategy of MoO3 into WO3 could effectively improve the gas sensing properties. Especially, the sensor based on the 4 mol% MoO3/WO3 composite nanostructures exhibited enhanced gas sensing performance, giving a low limit of detection (500 ppb). It shows high responses of 28.5 and 18.2–100 ppm ethanol and acetone at the operating temperature of 320 °C, which were about 2.3 and 1.7 times higher than those of the pure WO3, respectively. The enhanced sensing properties of MoO3/WO3 gas sensor can be attributed to the addition of MoO3, which has been discussed in relation to the gas sensing mechanism.

Keywords

MoO3 Composite Nanostructures WCl6 Optimum Operating Temperature Tungsten Hexachloride 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

We appreciate the support of the National Natural Science Foundation of China (51205274), Shanxi Province Science Foundation (2016011039), Shanxi Province Special Talent Fund (201605D211020), University of Science and Technology innovation Research Project of Shanxi Province (2016137), Graduate Education Innovation Fund (02100738), Science and Technology Major Project of the Shan Xi Science and Technology Department (20121101004), and Key Disciplines Construction in Colleges and Universities of Shanxi [(2012)45].

Supplementary material

10853_2016_450_MOESM1_ESM.docx (248 kb)
Supplementary material 1 (DOCX 247 kb)

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Yongjiao Sun
    • 1
  • Lin Chen
    • 2
  • Ying Wang
    • 1
  • Zhenting Zhao
    • 1
  • Pengwei Li
    • 1
  • Wendong Zhang
    • 1
  • Yamin Leprince-Wang
    • 3
  • Jie Hu
    • 1
  1. 1.Micro and Nano System Research Center, Key Lab of Advanced Transducers and Intelligent Control System (Ministry of Education) & College of Information EngineeringTaiyuan University of TechnologyTaiyuanChina
  2. 2.Key Laboratory of Interface Science and Engineering in Advanced Materials (Taiyuan University of Technology), Ministry of EducationTaiyuanChina
  3. 3.Université Paris-Est, ESYCOM, UPEMMarne-la-ValléeFrance

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