The critical role of hydroxyl groups in water vapor sensing of graphene oxide.

ABSTRACT: Excellent adsorption of water vapor on the surface of graphene oxide (GO), which contains several inherited functional groups, leads to the development of improved humidity monitoring systems that can urgently meet the high industrial demand. In this study, we fabricated a GO-based humidity sensor and investigated the influence of hydroxyl group concentration on its performance. The sensor exhibited excellent humidity sensing performance in terms of sensitivity (sensor response ∼40 for 90% RH), selectivity, stability (both long-term and short-term) and reaction time (τ _res = 8.5 s and τ _rec = 13 s). Additionally, this sensor does not require external power consumption for heating; thus, the aforementioned performance (recorded at room temperature) with a

SUBMITTER: Fatima Q 

PROVIDER: S-EPMC9473244 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature