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Highly sensitive formaldehyde chemical sensor based on in situ precipitation synthesis of ZnSnO3 microspheres

  • Xiaohua Jia
  • Minggang Tian
  • Zhen Zhang
  • Rongrong Dai
  • Xiangyang Wu
  • Haojie Song
Article

Abstract

Highly sensitive formaldehyde chemical sensor was fabricated using uniform and mono-disperse ZnSnO3 microspheres, which were successfully prepared by a template-free, economical in situ precipitation method combined with subsequent calcination. The orientation and morphology of the precursor, ZnSn(OH)6 microspheres, were carefully controlled by adjusting the added amount of NaOH. This facile process may provide an approach to synthesis of functional nanomaterials with unique structures and excellent physicochemical properties. Moreover, the as-fabricated sensors based on the ZnSnO3 microspheres showed high response and short response-recovery time toward formaldehyde. To 50 ppm formaldehyde, the sensor response (S) was 17 at a working temperature of 260 °C, and the response and recovery time were 6 and 18 s, respectively. The gas response of sensors based on the ZnSnO3 microspheres was linear with the concentration of formaldehyde in the range of 5–100 ppm with a correlation coefficient of 0.997. These results showed that the as-prepared ZnSnO3 microspheres have a potential application in gas sensor.

Keywords

SnO2 Zinc Acetate Dihydrate Subsequent Calcination Composite Metal Oxide Single Metal Oxide 
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

Acknowledgments

We gratefully acknowledge the support of the National Natural Science Foundation of China (Nos. 51372103 and 51202092), the special grade of the financial support from China Postdoctoral Science Foundation (2014T70485), the China Postdoctoral Science Foundation (2013M531285), and the Senior Intellectuals Fund of Jiangsu University (11JDG108).

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Xiaohua Jia
    • 1
  • Minggang Tian
    • 1
  • Zhen Zhang
    • 1
  • Rongrong Dai
    • 1
  • Xiangyang Wu
    • 1
  • Haojie Song
    • 2
  1. 1.School of the Environment and Safety EngineeringJiangsu UniversityZhenjiangChina
  2. 2.School of Materials Science and EngineeringJiangsu UniversityZhenjiangChina

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