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

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

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.

本文言語英語
ページ(範囲)267-270
ページ数4
ジャーナルJournal of the Ceramic Society of Japan
122
1424
DOI
出版ステータス出版済み - 4 2014
外部発表はい

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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