Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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α-Pinene Sensing Properties of Rhombohedral In2O3 Nanoparticles Prepared using the Microwave-assisted Hydrothermal Method

마이크로파 보조 수열 합성법으로 제조한 Rhombohedral In2O3 나노입자의 α-pinene 감지 특성

  • Byeong-Hun, Yu (Department of Electronic and Information Materials Engineering, Jeonbuk National Unversity) ;
  • Hyo Jung, Lee (Forest Wellfare Research Center, Korea Forest Wellfare Institute) ;
  • Joo Ho, Hwang (Forest Wellfare Research Center, Korea Forest Wellfare Institute) ;
  • Ji-Wook, Yoon (Department of Electronic and Information Materials Engineering, Jeonbuk National Unversity)
  • 유병훈 (전북대학교 전자정보재료공학과) ;
  • 이효정 (한국산림복지진흥원 산림복지연구개발센터) ;
  • 황주호 (한국산림복지진흥원 산림복지연구개발센터) ;
  • 윤지욱 (전북대학교 전자정보재료공학과)
  • Received : 2022.10.26
  • Accepted : 2022.11.07
  • Published : 2022.11.30
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Abstract

α-pinene is a natural volatile organic compound secreted by coniferous trees to protect themselves from attacks by insects, microorganisms, and viruses. Recently, studies have reported that α-pinene possesses pharmacological effects on various biological reactions such as anxiolytic, sleep-enhancing, anti-nociceptive, and inflammatory activity. Thus, forest bathing has recently received great attention as a novel therapy for treating severe diseases as well as psychological issues. However, appropriate places and timings for effective therapies are still veiled, because on-site monitoring of α-pinene gas in forests is barely possible. Although portable chemosensors could allow real-time analysis of α-pinene gas in forests, the α-pinene sensing properties of chemosensors have never been reported thus far. Herein, we report for the first time, the α-pinene sensing properties of an oxide semiconductor gas sensor based on rhombohedral In2O3 (h-In2O3) nanoparticles prepared by a microwave-assisted hydrothermal reaction. The h-In2O3 nanoparticle sensor showed a high response to α-pinene gas at ppm levels, even under humid conditions (for example, relative humidity of 50 %). The purpose of this research is to identify the potential of oxide semiconductor gas sensors for implementing portable devices that can detect α-pinene gas in forests in real-time.

Keywords

Acknowledgement

본 연구는 산림청(한국임업진흥원) 산림과학기술 연구개발사업'(FTIS 2021382C10-2221-0101)'의 지원에 의하여 이루어진 것입니다.

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