Back to Search
Start Over
MXene-activated graphene oxide enhancing NO2 capture and detection of surface acoustic wave sensors.
- Source :
-
Sensors & Actuators B: Chemical . Feb2024, Vol. 401, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Surface acoustic wave (SAW) technology has been widely used in the field of harmful gas detection, but there remain a lot of challenges, such as long response/recovery time as well as poor selectivity and repeatability. Herein, we activate graphene oxide (GO) using MXene with excellent adsorption capacity (MXene/GO) to realize efficient NO 2 gas detection. The SAW sensor assembled with the multilayered MXene/GO composite showcases an enhanced gas sensing performance to the NO 2 gas (1–200 ppm) enabling high sensitivity (Δf = 260 Hz/ppm), fast response/recovery time, excellent selectivity, and good repeatability at room temperature. The enhanced high sensitivity and selectivity detection of NO 2 gas is attributed to the large pore size, hydrophilicity, and abundant surface functional groups of the multilayered MXene/GO composite. This elaborate design is expected to propel the development of next-generation acoustic gas phase sensors. [Display omitted] • The MXene is investigated in surface acoustic wave sensors for the first time and filles the material gap. • The facile synthetic method for the MXene/GO composite is expected to realize rapid and large-scale synthesis of sensitive layers for surface acoustic wave sensors. • The working mechanism of MXene-based sensitive layers is proposed and the factors to influence sensing performance are also considered. • The excellent sensing performance of MXene/GO-based surface acoustic wave sensors is obtained under different conditions. • A novel MXene/GO composite is proposed for the first time to evaluate its working mechanism and sensing performance in SAW gas sensors. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 401
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 174318224
- Full Text :
- https://doi.org/10.1016/j.snb.2023.135006