DOI QR코드

DOI QR Code

산화니켈 및 탄소나노튜브/산화니켈 복합체 가스센서의 제작과 황화수소 감지 특성

Fabrication and H2S Sensing Property of Nickel Oxide and Nickel Oxide-Carbon Nanotube Composite

  • 양하늘 (충남대학교 신소재공학과) ;
  • ;
  • ;
  • 박지환 (충남대학교 신소재공학과) ;
  • 홍순현 (충남대학교 신소재공학과) ;
  • 윤홍관 (충남대학교 신소재공학과) ;
  • 김천중 (충남대학교 신소재공학과) ;
  • 김도진 (충남대학교 신소재공학과)
  • Yang, Haneul (Department of Materials Science and Engineering, Chungnam National University) ;
  • Chinh, Ngyuen Duc (Department of Materials Science and Engineering, Chungnam National University) ;
  • Hieu, Ngyuen Minh (Department of Materials Science and Engineering, Chungnam National University) ;
  • Park, Jihwan (Department of Materials Science and Engineering, Chungnam National University) ;
  • Hong, Soonhyun (Department of Materials Science and Engineering, Chungnam National University) ;
  • yun, Hongkwan (Department of Materials Science and Engineering, Chungnam National University) ;
  • Kim, Chunjoong (Department of Materials Science and Engineering, Chungnam National University) ;
  • Kim, Dojin (Department of Materials Science and Engineering, Chungnam National University)
  • 투고 : 2018.05.24
  • 심사 : 2018.07.27
  • 발행 : 2018.08.27

초록

Nickel oxide(NiO) thin films, nanorods, and carbon nanotube(CNT)/NiO core-shell nanorod structures are fabricated by sputtering Nickel at different deposition time on alumina substrates or single wall carbon nanotube templates followed by oxidation treatments at different temperatures, 400 and $700^{\circ}C$. Structural analyses are carried out by scanning electron microscopy and x-ray diffraction. NiO thinfilm, nanorod and CNT/NiO core-shell nanorod structurals of the gas sensor structures are tested for detection of $H_2S$ gas. The NiO structures exhibit the highest response at $200^{\circ}C$ and high selectivity to $H_2S$ among other gases of NO, $NH_3$, $H_2$, CO, etc. The nanorod structures have a higher sensing performance than the thin films and carbon nanotube/NiO core-shell structures. The gold catalyst deposited on NiO nanorods further improve the sensing performance, particularly the recovery kinetics.

키워드

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