Solvothermal synthesis of ZnO spherical particles and VOC sensor application

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

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We synthesized micrometer-sized ZnO spherical particles solvothermally from the solutions of zinc acetate anhydride, hexamethylenetetramine (HMT), ethylene glycol (EG) and water, and examined the gas sensing properties. The spherical powders were composed of nano particles, which were radially aligned along the c-axis. We obtained particles with smaller crystallites under conditions of higher EG concentrations and shorter reaction period. Spherical powder made of crystallites of 35 nm was precipitated in the 95 vol%-EG solvent by heating at 120°C for 4 h. The ZnO powder annealed at 450°C worked 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.

Original languageEnglish
Pages (from-to)488-491
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume122
Issue number1426
DOIs
Publication statusPublished - Jun 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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