Gas sensing property of pyramid shaped ZnO particles

KAKEN

About This Project

Japan Grant Number
JP17K06807 (JGN)
Funding Program
Grants-in-Aid for Scientific Research
Funding Organization
Japan Society for the Promotion of Science

Kakenhi Information

Project/Area Number
17K06807
Research Category
Grant-in-Aid for Scientific Research (C)
Allocation Type
  • Multi-year Fund
Review Section / Research Field
  • Science and Engineering > Engineering > Material engineering > Inorganic materials/Physical properties
Research Institution
  • National Institute for Materials Science
Project Period (FY)
2017-04-01 〜 2022-03-31
Project Status
Completed
Budget Amount*help
4,680,000 Yen (Direct Cost: 3,600,000 Yen Indirect Cost: 1,080,000 Yen)

Research Abstract

We synthesized hexagonal pyramid-shaped zinc oxide particles with a (0001) surface on the bottom and {1-10-1} on the side by a solvothermal method, measured particle characterization and gas sensor characteristics, and investigated the effects of the crystal plane of the particles on sensor. High sensor response to reducing gases in exhaled breath such as ethanol, acetone, and isoprene was obtained, confirming the effect of the crystal face of the pyramidal zinc oxide particles on gas sensor performance. The loading effect of noble metal nanoparticles to the zinc oxide particles on the sensor properties was also investigated, and the effect on sensitivity improvement and gas selectivity was confirmed. The effect of water vapor was also investigated, and it was shown that the sensor can detect gases with concentrations equivalent to exhaled breath even at high humidity. The effect of gold particles on gas selectivity for isoprene gas was also demonstrated.

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