Journal of Materials Science

, Volume 54, Issue 3, pp 2333–2342 | Cite as

Enhanced ammonia sensing characteristics of CeO2-decorated SiO2/PANI free-standing nanofibrous membranes

  • Zengyuan Pang
  • Qingxin Nie
  • Yanan Zhu
  • Mingqiao GeEmail author
  • Mingqing Chen
Electronic materials


CeO2-decorated SiO2/PANI free-standing nanofibrous membranes were fabricated using an approach which involved electrospinning–electrospraying, calcination and in situ polymerization. Specifically, the CeO2 precursor deposition on the electrospun nanofibers surface was done through electrospraying, followed by the calcination which resulted in CeO2 particles and SiO2 free-standing nanofibers. By incorporating CeO2, ammonia sensing properties of the as-prepared SiO2/PANI free-standing composite nanofibers (SiO2/PANI FCN) can be dramatically improved. The sensing response value of SiO2/CeO2/PANI free-standing composite nanofibers (SiO2/CeO2/PANI FCN), analyzed with 300 ppm ammonia, was ca. 36.98, which was superior to SiO2/PANI composite nanofibers. The ammonia sensing mechanism of the SiO2/CeO2/PANI FCN can be attributed to the P–N heterojunctions formed between p-type PANI and n-type CeO2. Furthermore, the SiO2/CeO2/PANI free-standing ammonia sensor presented ideal selectivity and repeatability. This work provided a new insight into the development of free-standing and high-performance gas sensors.



This work is supported by China Postdoctoral Science Foundation funded project (No. 2018M632231) and the Natural Science Foundation of Jiangsu Province of China (No. BK20171140).

Compliance with ethical standards

Conflict of interest

The authors declare no competing financial interest.

Supplementary material

10853_2018_2981_MOESM1_ESM.docx (291 kb)
Supplementary material 1 (DOCX 290 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Key Laboratory of Eco-Textiles, Ministry of EducationJiangnan UniversityWuxiChina
  2. 2.School of Chemical and Material EngineeringJiangnan UniversityWuxiChina

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