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학술지 Pd-Doped TiO2 Nanofiber Networks for Gas Sensor Applications
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저자
문제현, 박진아, 이수재, 정태형, 김일두
발행일
201008
출처
Sensors and Actuators B : Chemical, v.149 no.1, pp.301-305
ISSN
0925-4005
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.snb.2010.06.033
협약과제
09ZH1300, ETRI 연구역량 강화를 위한 R&D체계 구축 및 Seed형 기술개발을 위한 창의형 연구 사업, 현창희
초록
This work presents a new route to enhance the sensitivity of nanocrystalline TiO2 fibers based gas sensors. Pure and Pd-doped TiO2 nanofiber mats were synthesized by electrospinning and subsequent calcination. Highly porous fibrillar morphology was observed in the resultant nanocrystalline TiO2 fibers. In addition to anatase TiO2 crystallites, tiny (~2 nm) PdO crystallites were observed in the Pd-doped TiO2 fibers. The sensors using Pd-doped TiO2 fibers showed promising gas sensing characteristics, such as low operation temperature (180 °C) and sufficient gas response (R/Ro = 38 to 2.1 ppm NO2). The techniques outlined here offer new means for preparing novel metal-oxide nanofibers with catalytic dopants. © 2010 Elsevier B.V. All rights reserved.
키워드
Electrospinning, Gas sensor, Metal-oxide nanofiber, Pd, TiO 2
KSP 제안 키워드
Fibrillar morphology, Gas response, Gas sensing, Gas sensor applications, Highly porous, Metal-oxide(MOX), Operation temperature, Oxide nanofiber, Pd-doped, TiO2 fibers, nanofiber mat