Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Gas Sensing Properties of Pt Doped Fe2O3 Nanoparticles Fabricated by Sol-Gel Method

Sol-Gel 방법을 이용하여 제작된 Pt이 첨가된 Fe2O3 나노 입자의 가스 감지 특성

  • Jang, Min-Hyung (Department of Electrical and Computer Engineering, Pusan National University) ;
  • Lim, Yooseong (Department of Electrical and Computer Engineering, Pusan National University) ;
  • Choi, Seung-Il (Department of Advanced Circuit Interconnection, Pusan National University) ;
  • Park, Ji-In (Department of Electrical and Computer Engineering, Pusan National University) ;
  • Hwang, Namgyung (Department of Electrical and Computer Engineering, Pusan National University) ;
  • Yi, Moonsuk (Department of Electrical and Computer Engineering, Pusan National University)
  • 장민형 (부산대학교 전기전자컴퓨터공학과) ;
  • 임유성 (부산대학교 전기전자컴퓨터공학과) ;
  • 최승일 (부산대학교 차세대기판학과) ;
  • 박지인 (부산대학교 전기전자컴퓨터공학과) ;
  • 황남경 (부산대학교 전기전자컴퓨터공학과) ;
  • 이문석 (부산대학교 전기전자컴퓨터공학과)
  • Received : 2016.12.22
  • Accepted : 2017.03.06
  • Published : 2017.05.01
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Abstract

$Fe_2O_3$ is one of the most important metal oxides for gas sensing applications because of its low cost and high stability. It is well-known that the shape, size, and phase of $Fe_2O_3$ have a significant influence on its sensing properties. Many reports are available in the literature on the use of $Fe_2O_3$-based sensors for detecting gases, such as $NO_2$, $NH_3$, $H_2S$, $H_2$, and CO. In this paper, we investigated the gas-sensing performance of a Pt-doped ${\varepsilon}$-phase $Fe_2O_3$ gas sensor. Pt-doped $Fe_2O_3$ nanoparticles were synthesized by a Sol-Gel method. Platinum, known as a catalytic material, was used for improving gas-sensing performance in this research. The gas-response measurement at $300^{\circ}C$ showed that $Fe_2O_3$ gas sensors doped with 3%Pt are selective for $NO_2$ gas and exhibita maximum response of 21.23%. The gas-sensing properties proved that $Fe_2O_3$ could be used as a gas sensor for nitrogen dioxide.

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References

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