Annealing effect on microstructure of ZnO nano-particulate films and VOC gas sensing property

Noriko Saito, Ken Watanabe, Tangi Aubert, Fabien Grasset, Isao Sakaguchi, Hajime Haneda

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We synthesized ZnO nano-particulate films by a sol-gel method and evaluated their gas sensing properties. A ZnO colloidal solution of 5.6 nm sized nanocrystals was prepared from zinc acetate in n-propanol and dip-coated on silica glass substrates. The as-deposited ZnO film consisted of 30nm grains. Annealing the films resulted in a growth of the particles, which was confirmed by scanning probe microscopy and UV-Vis spectrometry. The ZnO film annealed at 400°C worked well as a gas sensor device for volatile organic compounds (VOC) gases. The sensitivity was the best in the case of ethanol gas at 350°C. The sensing performances decreased by annealing at higher temperatures due to the coalescence of the ZnO particles.

Original languageEnglish
Pages (from-to)267-270
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume122
Issue number1424
DOIs
Publication statusPublished - Apr 2014
Externally publishedYes

Fingerprint

Volatile Organic Compounds
volatile organic compounds
Volatile organic compounds
particulates
Gases
Annealing
microstructure
Microstructure
annealing
gases
Zinc Acetate
1-Propanol
Scanning probe microscopy
silica glass
Propanol
Fused silica
Chemical sensors
Coalescence
Nanocrystals
coalescing

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Annealing effect on microstructure of ZnO nano-particulate films and VOC gas sensing property. / Saito, Noriko; Watanabe, Ken; Aubert, Tangi; Grasset, Fabien; Sakaguchi, Isao; Haneda, Hajime.

In: Journal of the Ceramic Society of Japan, Vol. 122, No. 1424, 04.2014, p. 267-270.

Research output: Contribution to journalArticle

Saito, Noriko ; Watanabe, Ken ; Aubert, Tangi ; Grasset, Fabien ; Sakaguchi, Isao ; Haneda, Hajime. / Annealing effect on microstructure of ZnO nano-particulate films and VOC gas sensing property. In: Journal of the Ceramic Society of Japan. 2014 ; Vol. 122, No. 1424. pp. 267-270.
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