Abstract
Graphene oxide has been studied as sensing material for the humidity detection in this paper. At room temperature, graphene oxide was dissolved in water to prepare graphene oxide aqueous solution. This aqueous solution was distributed on the electrode surface of quartz crystal microbalance to form a thin film for humidity detection. The results of the experiment showed that the quartz crystal microbalance sensors with graphene oxide film have good response to the change of humidity. The maximum humidity sensitivity, during the humidity ranging from 10% to 90%RH (relative humidity), has achieved ~54Hz/%RH (relative humidity). The quartz crystal microbalance sensors with graphene oxide thin film have good stability and reproducibility properties. All results implied that the graphene oxide was a potential humidity sensing material for practical use.
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