상세정보
학술지
A Highly Susceptive Mesoporous Hematite Microcube Architecture for Sustainable P-type Formaldehyde Gas Sensors
- 발행일
- 201905
- 출처
- Sensors and Actuators B : Chemical, v.287, pp.437-444
- ISSN
- 0925-4005
- 출판사
- Elsevier
- 협약과제
- 18JS1100, 다중 바이오마커 기반 모바일 다이어트 모니터링 기술 개발, 이대식
- 초록
- The mesoporous hematite cubic frameworks (慣-Fe2O3 microcube) with 2??3 μm sizes were prepared using a simple thermal treatment of the iron oxalate hydrate cubes (4 μm). The 慣-Fe2O3 microcube structure with a high surface area (36 m2 g?닋1) had three-dimensionally connected small grain sizes (??18 nm). In formaldehyde (HCHO) gas sensing, the fabricated device by 慣-Fe2O3 microcubes shows excellent detection ability even at low HCHO concentration (??50 ppb) and high response reaching to Rgas/Rair = 5.2 at 1 ppm as well as long-term stability, compared with conventional Fe2O3 nanoparticles.
- KSP 제안 키워드
- Detection ability, Formaldehyde gas, Gas sensing, Grain size, High response, Long-Term Stability, Thermal treatments, gas sensors, high surface area, iron oxalate, p-Type