Size-Independent and Ultrahigh CO Gas Sensor Based on TiO2 Modified ZnO Tetrapods

Theerapong Santhaveesuk, Kengo Shimanoe, Koichi Suematsu, Supab Choopun

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

ZnO tetrapods modified by TiO2 powder are synthesized using a simple fast thermal oxidation method, and theirs CO sensing properties are investigated. The ZnO tetrapods modified by TiO2 powder sensor is tested at 250–400 °C under different CO concentrations compared with pure ZnO tetrapods, ZnO nanoparticle, and ZnO powder sensors. With a good crystallinity and a high pore size, the ZnO tetrapods modified by TiO2 powder sensor shows the highest sensing response compared to other sensors, exhibiting a size-independent property for CO. Additionally, the response time of ZnO tetrapods modified by TiO2 powder sensor is reduced. The improvement of the sensing properties is attributed to microstructure, lattice, surface area, and conductance modification of TiO2 additive together with a high diffusion process deeply inside the sensing layer through the large pore size.

元の言語英語
記事番号1700784
ジャーナルPhysica Status Solidi (A) Applications and Materials Science
215
発行部数14
DOI
出版物ステータス出版済み - 7 24 2018

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Carbon Monoxide
Chemical sensors
Powders
sensors
Sensors
gases
Pore size
porosity
crystallinity
Nanoparticles
Oxidation
nanoparticles
microstructure
Microstructure
oxidation

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering
  • Materials Chemistry

これを引用

Size-Independent and Ultrahigh CO Gas Sensor Based on TiO2 Modified ZnO Tetrapods. / Santhaveesuk, Theerapong; Shimanoe, Kengo; Suematsu, Koichi; Choopun, Supab.

:: Physica Status Solidi (A) Applications and Materials Science, 巻 215, 番号 14, 1700784, 24.07.2018.

研究成果: ジャーナルへの寄稿記事

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