BROWSE
Detail
Journal Article
Highly Dispersed Pt-Incorporated Mesoporous Fe2O3 for Low-Level Sensing of Formaldehyde Gas
- Authors
- Seung Jin Jeon, Kyung Hee Oh, Youngbo Choi, Ji Chan Park, Hyung Ju Park
- Issue Date
- 2023-02
- Citation
- Nanomaterials, v.13, no.4, pp.1-13
- ISSN
- 2079-4991
- Publisher
- MDPI
- Language
- English
- Type
- Journal Article
- Abstract
- 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 Keywords
- Formaldehyde gas, Gas response, Gas sensing properties, Hydrothermal reaction, Long term stability, Pt nanoparticles, Sensor based, Thermal Decomposition, chemical sensitization, gas sensing performance, gas sensors
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
