Synthesis of ZnO Nanofibers and Their Gas Sensing Properties

摘要

ZnO nanofibers were synthesized using an electrospinning method with polyvinyl alcohol and zinc acetate as precursor materials. The ZnO nanofibers of a polycrystalline nature were distributed uniformly over the substrate. Individual nanofibers consisted of nanograins. Using these nanofibers, we have fabricated a gas sensor. The sensing properties of the ZnO nanofiber sensor to NO_2 and CO were systematically investigated. It exhibited device-applicable sensitivity and dynamic properties for the tested gases, demonstrating that the electrospinning-synthesized ZnO nanofibers hold promise for realizing sensitive and reliable gas sensors.