Enhanced NO 2 Sensing at Room Temperature with Graphene via Monodisperse Polystyrene Bead Decoration
Journal
ACS Omega
Journal Volume
4
Journal Issue
2
Pages
3812-3819
Date Issued
2019
Author(s)
Fei, H.
Wu, G.
Cheng, W.-Y.
Yan, W.
Xu, H.
Zhang, D.
Zhao, Y.
Lv, Y.
Chen, Y.
Zhang, L.
Cormac Ó Coileáin
Heng, C.
Wu, H.-C.
Abstract
sensing of graphene can be also enhanced via decoration with monodisperse polymer beads. In dark conditions, the detection limit is improved from 1000 to 45 ppb after the application of polystyrene (PS) beads. With laser illumination, a detection limit of 0.5 ppb is determined. The enhanced gas sensing is due to surface plasmon polaritons excited by interference and charge transfer between the PS beads. This method opens an interesting route for the application of graphene in gas sensing.
Type
journal article