TY - JOUR
T1 - Size-Independent and Ultrahigh CO Gas Sensor Based on TiO2 Modified ZnO Tetrapods
AU - Santhaveesuk, Theerapong
AU - Shimanoe, Kengo
AU - Suematsu, Koichi
AU - Choopun, Supab
N1 - Funding Information:
Theerapong Santhaveesuk would like to thank the Commission on Higher Education, Thailand for supporting by grant fund under the program Strategic Scholarships for Frontier Research Network for the Join Ph.D. Program Thai Doctoral degree for this research, and a partial support from Prof. Dr. Kengo Shimanoe, Kyushu University, Japan.
Publisher Copyright:
© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/7/24
Y1 - 2018/7/24
N2 - 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.
AB - 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.
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U2 - 10.1002/pssa.201700784
DO - 10.1002/pssa.201700784
M3 - Article
AN - SCOPUS:85047495524
SN - 1862-6300
VL - 215
JO - Physica Status Solidi (A) Applications and Materials Science
JF - Physica Status Solidi (A) Applications and Materials Science
IS - 14
M1 - 1700784
ER -