Enhanced ethanol-gas sensing performance of Ce-doped SnO2 hollow nanofibers prepared by electrospinning

Panneerselvam Mohanapriya, Hiroyo Segawa, Ken Watanabe, Kenji Watanabe, Sadaki Samitsu, T. S. Natarajan, N. Victor Jaya, Naoki Ohashi

Research output: Contribution to journalArticlepeer-review

62 Citations (Scopus)

Abstract

Tin oxide (SnO2) hollow nanofibers doped with cerium oxide (CeOx) were synthesized to study the impact of CeO2 additives on their chemical sensing response. X-ray diffraction analysis and Raman scattering spectroscopic analysis showed that crystallization of CeO 2 in the fiber composites was observed only when the Ce concentration was greater than 6 mol%. Also, maximum sensing response to ethanol was seen in the fiber composites with 6 mol% addition of Ce. Accordingly, we have discussed the possible explanations for this, including the role of crystalline CeO 2 as a surface catalyst, and the role of hydrogen liberated during the dehydrogenation reaction of ethanol diffusing into the SnO2 lattice. The results obtained in this study indicate that SnO 2-CeO2 nanofiber composites are potential candidates for use as high-sensitivity gas sensors.

Original languageEnglish
Pages (from-to)872-878
Number of pages7
JournalSensors and Actuators, B: Chemical
Volume188
DOIs
Publication statusPublished - 2013
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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