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Sensors (Basel)


Title:VOC Detections by p-Type Semiconducting Sensors Using Nano-Sized SmFeO(3) Particles
Author(s):Mori M; Noguchi A; Itagaki Y;
Address:"Graduate School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan"
Journal Title:Sensors (Basel)
Year:2022
Volume:20220727
Issue:15
Page Number: -
DOI: 10.3390/s22155616
ISSN/ISBN:1424-8220 (Electronic) 1424-8220 (Linking)
Abstract:"Nano-sized SmFeO(3) particles are prepared by the pyrolysis of heteronuclear cyano-complex, Sm[Fe(CN)(6)].4H(2)O at a temperature of 600 degrees C in ozone. The low temperature decomposition followed in ozone successfully yielded fine particles with a high specific surface area of 20.0 m(3)/g (sample A). The fine particles were classified into further smaller particles with a unimodal size distribution and this process yielded a high specific surface area of 26.0 m(3)/g (sample B). These semiconducting powders were deposited on a sensor electrode by electrophoretic deposition (EPD) and tested on their sensing properties to VOCs. The sensors consisting of samples A and B both showed good responses to ethanol at 285 and 320 degrees C. The sensor with sample B showed extraordinarily good selectivity of ethanol for toluene at 320 degrees C. This could be because the detection film of sample B with moderately grown particles selectively reduced the reaction activity of toluene. The sensor with sample B also exhibited good selectivity of ethanol for hexane and dichloromethane"
Keywords:SmFeO3 ozone p-type semiconducting sensor volatile organic compounds (VOCs);
Notes:"PubMed-not-MEDLINEMori, Masami Noguchi, Ayumu Itagaki, Yoshiteru eng Switzerland 2022/08/13 Sensors (Basel). 2022 Jul 27; 22(15):5616. doi: 10.3390/s22155616"

 
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