Highly Dispersed Pt-Incorporated Mesoporous Fe₂O₃ for Low-Level Sensing of Formaldehyde Gas.

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

SUBMITTER: Jeon SJ 

PROVIDER: S-EPMC9960270 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature