| 학회 |
한국공업화학회 |
| 학술대회 |
2013년 가을 (10/30 ~ 11/01, 대전컨벤션센터) |
| 권호 |
17권 2호 |
| 발표분야 |
포스터-나노 |
| 제목 |
WO3 nanoparticle-decorated carbon nanofibers for highly sensitive NO2 gas sensor application |
| 초록 |
WO3 nanoparticle-decorated carbon nanofibers (CNFs) of various diameters were fabricated by single-nozzle co-electrospinning using two phase-separated polymer solutions. Using more polyvinylpyrrolidone (PVP) solution decreased the CNF diameter from 130 to 40 nm and increased the Brunauer-Emmett-Teller (BET) surface area from 147 to 278 m2 g-1. The sensitivity of the hybrid CNF gas sensors increased with decreasing diameter of the CNFs; the minimum detectable level (MDL) was 1 ppm at room temperature for 40 nm hybrid CNFs dispersed uniformly on the electrode. Furthermore, increasing the amount of decorated WO3 nanonodules on the CNF surface enhanced the sensitivity to NO2 gas. The NO2 sensor made with the hybrid CNFs had sensing performance comparable to those made with conventional metal oxide based nanomaterials and pristine carbon nanotubes (CNTs). |
| 저자 |
이준섭, 서영덕, 장정식
|
| 소속 |
서울대 |
| 키워드 |
electrospinning; carbon nanofiber; NO2 gas; chemical sensor; room temperature
|
| E-Mail |
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