Electrochemical Detection of Ethanol in Air Using Graphene Oxide Nanosheets Combined with Au-WO₃.

ABSTRACT: Detection, monitoring, and analysis of ethanol are important in various fields such as health care, food industries, and safety control. In this study, we report that a solid electrolyte gas sensor based on a proton-conducting membrane is promising for detecting ethanol in air. We focused on graphene oxide (GO) as a new solid electrolyte because it shows a high proton conductivity at room temperature. GO nanosheets are synthesized by oxidation and exfoliation of expanded graphite via the Tour's method. GO membranes are fabricated by stacking GO nanosheets by vacuum filtration. To detect ethanol, Au-loaded WO₃ is used as the sensing electrode due to the excellent activity of gold nanoparticles for the catalysis of organic molecules. Au-WO₃ is coupled with rGO (reduced

SUBMITTER: Fauzi ASA 

PROVIDER: S-EPMC9105121 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature