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나노 ZnO:CNT를 이용한 후막 가스센서의 특성연구 KCI 등재 SCOPUS

Characteristics of Thick Film Gas Sensors Using Nano ZnO:CNT

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한국재료학회지 (Korean Journal of Materials Research)
한국재료학회 (Materials Research Society Of Korea)
초록

The effects of an addition of CNT on the sensing properties of nano ZnO:CNT-based gas sensors were studied for H2S gas. The nano ZnO sensing materials were grown by a hydrothermal reaction method. The nano ZnO:CNT was prepared by ball-milling method. The weight range of the CNT addition on the ZnO surface was from 0 to 10%. The nano ZnO:CNT gas sensors were fabricated by a screen-printing method on alumina substrates. The structural and morphological properties of the ZnO:CNT sensing materials were investigated by XRD, EDS, and SEM. The XRD patterns revealed that nano ZnO:CNT powders with a wurtzite structure were grown with (1 0 0), (0 0 2), and (1 0 1) dominant peaks. The size of the ZnO was about 210 nm, as confirmed by SEM images. The sensitivity of the nano ZnO:CNT-based sensors was measured for 5 ppm of H2S gas at room temperature by comparing the resistance in air with that in target gases.

키워드
저자
  • 윤소진(동의대학교 물리학과) | Yoon, So-Jin
  • 유일( 동의대학교 물리학과) | 유일