한국표면공학회지 (Journal of the Korean institute of surface engineering)

  • 제49권1호
  • /
  • Pages.75-80
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  • 2016
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  • 1225-8024(pISSN)
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  • 2288-8403(eISSN)
한국표면공학회 (The Korean Institute of Surface Engineering)
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Co3O4 나노입자가 코팅된 In2O3 나노와이어의 에탄올 가스 검출 특성

Ethanol Gas Sensing Properties of In2O3 Nanowires Coated with Co3O4 Nanoparticles

  • 박성훈 (인하대학교 신소재공학과) ;
  • 강우승 (인하공업전문대학 금속재료과)
  • Park, Sunghoon (Department of Materials Science & Engineering, Inha University) ;
  • Kang, Wooseung (Department of Metallurgical & Materials Engineering, Inha Technical College)
  • 투고 : 2016.01.22
  • 심사 : 2016.02.13
  • 발행 : 2016.02.29
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초록

$In_2O_3$ nanowires were coated with $Co_3O_4$ nanoparticles to investigate the improvement of ethanol gas sensing performance compared with as-synthesized $In_2O_3$ nanowires. Scanning electron microscopy showed that the nanowires synthesized by VLS mechanism had diameters and lengths of approximately 50-100 nm and a few micrometers, respectively. $Co_3O_4$ nanoparticles produced by hydrothermal method was in the size range of a few to a few tens nm. As-synthesized and $Co_3O_4$ nanoparticles coated $In_2O_3$ nanowires sensors exhibited responses of 1.96% and 4.57%, respectively for the ethanol gas concentration of 200 ppm at $200^{\circ}C$. The underlying mechanism for the improved responses of $Co_3O_4$ nanoparticles coated $In_2O_3$ nanowires sensors is discussed.

키워드

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