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 journalArticle

53 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 - Sep 9 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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