Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles

Taeyang Kim, Andrew C. Sharp, Hoon Yim, Bing Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we synthesized nanocrystalline Zn-doped γ-Fe 2O3 by flame spray pyrolysis under different conditions, and then investigated the gas sensing characteristics of these particles. Transmission electron microscopy (TEM) was employed to characterize the particles. Gas sensors were fabricated by applying the as-synthesized particles on interdigitated electrodes. The response of the gas sensor to acetone vapor in dry synthetic air was measured before and after 3 days of aging. High-temperature flame (H2/O2diffusion) generated nanometer-sized particles; lower temperature flame (H2/Air diffusion) generated micrometer-sized particles. The Zn-doped Fe2O3 nanoparticles showed a gas sensing sensitivity that was 20 times the literature value. [1]The 3-day aging did not cause deterioration in gas sensing ability of. the Zn-doped Fe2O3 nanoparticles. However, the microparticles lost their gas sensing ability after aging. The results showed that the flame synthesized γ-Fe2O3 particles had high gas sensing signal, and were more resistant toward aging than the microparticles.

Original languageEnglish
Title of host publicationNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009
Pages550-553
Number of pages4
Volume1
Publication statusPublished - 2009
Externally publishedYes
EventNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009 - Houston, TX, United States
Duration: 3 May 20097 May 2009

Other

OtherNanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009
CountryUnited States
CityHouston, TX
Period3/5/097/5/09

Fingerprint

Gases
Nanoparticles
nanoparticles
Aging of materials
gases
flames
Chemical sensors
microparticles
Spray pyrolysis
Acetone
Air
Deterioration
sensors
air
Vapors
deterioration
Transmission electron microscopy
acetone
pyrolysis
sprayers

Keywords

  • Aging
  • Flame spray pyrolysis
  • Gas sensing
  • Sensitivity

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kim, T., Sharp, A. C., Yim, H., & Guo, B. (2009). Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles. In Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009 (Vol. 1, pp. 550-553)

Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles. / Kim, Taeyang; Sharp, Andrew C.; Yim, Hoon; Guo, Bing.

Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009. Vol. 1 2009. p. 550-553.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, T, Sharp, AC, Yim, H & Guo, B 2009, Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles. in Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009. vol. 1, pp. 550-553, Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009, Houston, TX, United States, 3/5/09.
Kim T, Sharp AC, Yim H, Guo B. Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles. In Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009. Vol. 1. 2009. p. 550-553
Kim, Taeyang ; Sharp, Andrew C. ; Yim, Hoon ; Guo, Bing. / Gas sensing properties of Zn-doped anisometric Fe2O3 nanoparticles. Nanotechnology 2009: Fabrication, Particles, Characterization, MEMS, Electronics and Photonics - Technical Proceedings of the 2009 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2009. Vol. 1 2009. pp. 550-553
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