상세정보
학술지
Structural, Electrical and Gas Sensing Properties of Eletrospun TiO2 Nanofibers
- 발행일
- 200912
- 출처
- Thin Solid Films, v.518 no.22, pp.6642-6645
- ISSN
- 0040-6090
- 출판사
- Elsevier
- 협약과제
- 09ZH1300, ETRI 연구역량 강화를 위한 R&D체계 구축 및 Seed형 기술개발을 위한 창의형 연구 사업, 현창희
- 초록
- Multi-layered random network structure of titanium dioxides (TiO 2) nanofibers was fabricated by calcining electrospun TiO 2/PVP hybrid fibers. Their structural, electrical and gas sensing properties were investigated in a calcination temperature range of 400-800 °C. TiO2 nanofibers are polycrystalline with anatase structure below 600 °C and a mixture of anatase and rutile structures at 800 °C. The diameter of TiO2 nanofibers ranged from 350 nm to 500 nm, and the grain size increased from 8 nm to 45 nm with the increase in calcining temperature. The activation energies were in the range of 0.50-0.57 eV. The TiO2 nanofibers calcined at 600 °C showed the gas response upon exposure to CO concentration even below 1 ppm. © 2010 Elsevier B.V. All rights reserved.
- KSP 제안 키워드
- 5 nm, Activation Energy, Anatase and rutile, Anatase structure, CO concentration, Calcination temperature, Calcining temperature, Electrospun TiO 2, Gas response, Gas sensing properties, Grain size