Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Synthesis of Au-Decorated TiO2 Nanotubes on Patterned Substrates for Selective Gas Sensor

선택적 가스 센서를 위한 Au 나노입자가 장식된 TiO2 나노튜브의 합성

  • Kim, Do Hong (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University) ;
  • Shim, Young-Seok (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University) ;
  • Jang, Ho Won (Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University)
  • 김도홍 (서울대학교 재료공학부 신소재공동연구소) ;
  • 심영석 (서울대학교 재료공학부 신소재공동연구소) ;
  • 장호원 (서울대학교 재료공학부 신소재공동연구소)
  • Received : 2014.08.27
  • Accepted : 2014.09.15
  • Published : 2014.09.30
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Abstract

Well-ordered $TiO_2$ nanotubes with Au nanoparticles are a desirable configuration to enhance the gas sensing properties such as response and selectivity due to their high surface area to volume ratio and catalytic effect of Au nanoparticles. We have synthesized the well-ordered $TiO_2$ nanotubes directly on a Pt IDEs patterned $SiO_2/Si$ substrate and then decorated Au nanoparticles on inner and outer surface of $TiO_2$ nanotubes using electrodeposition method. The Au-decorated $TiO_2$ nanotubes shows ultrahigh response to $C2_H_5OH$ and the highest increasing ratio to $H_2$ compared with other gases.

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References

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