상세정보
학술지
Highly Dispersed Pt-Incorporated Mesoporous Fe2O3 for Low-Level Sensing of Formaldehyde Gas
- 발행일
- 202302
- 출처
- Nanomaterials, v.13 no.4, pp.1-13
- ISSN
- 2079-4991
- 출판사
- MDPI
- 협약과제
- 23HS5900, 운동능력 강화 자율 소프트슈트 기술 개발, 이동우
- 초록
- Highly dispersed Pt-incorporated mesoporous Fe2O3 (Pt/m-Fe2O3) of 4 μm size is prepared through a simple hydrothermal reaction and thermal decomposition procedures. Furthermore, the formaldehyde gas-sensing properties of Pt/m-Fe2O3 are investigated. Compared with our previous mesoporous Fe2O3-based gas sensors, a gas sensor based on 0.2% Pt/m-Fe2O3 shows improved gas response by over 90% in detecting low-level formaldehyde gas at 50 ppb concentration, an enhanced selectivity of formaldehyde gas, and a lower degradation of sensing performance in high-humidity environments. Additionally, the gas sensor exhibits similar properties as the previous sensor, such as operating temperature (275 °C) and long-term stability. The enhancement in formaldehyde gas-sensing performance is attributed to the attractive catalytic chemical sensitization of highly dispersed Pt nanoparticles in the mesoporous Fe2O3 microcube architecture.
- KSP 제안 키워드
- Formaldehyde gas, Gas response, Gas sensing properties, Hydrothermal reaction, Long-Term Stability, Pt nanoparticles, Sensor based, Thermal Decomposition, chemical sensitization, gas sensors, gas-sensing performance
본 저작물은 크리에이티브 커먼즈 저작자 표시 (CC BY) 조건에 따라 이용할 수 있습니다.
