대한금속재료학회지 (Korean Journal of Metals and Materials)

  • 제48권4호
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  • Pages.342-346
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  • 2010
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  • 1738-8228(pISSN)
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  • 2288-8241(eISSN)
대한금속재료학회 (The Korean Institute of Metals and Materials)
권호 표지
DOI QR코드

DOI QR Code

덴드리머와 팔라듐 나노입자를 이용한 단일벽 탄소나노튜브 고성능수소센서

Effects of Pd Nanoparticles on Single-Walled Carbon Nanotubes as High-Sensitivity Hydrogen Gas Sensors

  • 이준민 (연세대학교 신소재 공학과) ;
  • 주성화 (이화여자대학교 화학나노과학과) ;
  • 조진현 (연세대학교 신소재 공학과) ;
  • 김성진 (이화여자대학교 화학나노과학과) ;
  • 이우영 (연세대학교 신소재 공학과)
  • Lee, Jun Min (Deartment of Materials Science and Engineering, Yonsei University) ;
  • Ju, Seonghwa (Department of Chemistry and Nano Science, Ewha Womans University) ;
  • Joe, Jin Hyoun (Deartment of Materials Science and Engineering, Yonsei University) ;
  • Kim, Sung-Jin (Department of Chemistry and Nano Science, Ewha Womans University) ;
  • Lee, Wooyoung (Deartment of Materials Science and Engineering, Yonsei University)
  • 투고 : 2009.10.27
  • 발행 : 2010.04.15
⟨ 이전 논문 다음 논문 ⟩

초록

Pd nanoparticles (NPs) were successfully functionalizedon the surfaces of single-walled carbon nanotubes (SWNTs) by dendrimer-mediated synthesis. The hydrogen sensing properties of the Pd NPs functionalized SWNTs were investigated. Pd NPs-dendrimer-SWNTs sensors show much better speedsand superior recovery rates but lower sensitivity compared to Pd NPs-functionalized SWNTs directly fabricated due to the existence of dendrimers. Pyrolysis of the dendrimers by heat treatment resulted in a fast response time and high sensitivity owing to the reduced length of the dendrimers. These results demonstrate that the heat treatment of dendrimers in Pd NPs-dendrimer-SWNTs sensors can enable significant electrical conductance modulation upon exposure to extremely low concentrations (10 ppm) of hydrogen gas ($H_2$) in air.

키워드

과제정보

연구 과제 주관 기관 : 국방과학연구소, 한국연구재단, 과학재단, 서울시

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