GS5.3 - Ultra-Thin ZnFe2O4 Nanosheets-Decorated ZnO Hollow Nanofibers for High Sensitive Acetone Sensor

17th International Meeting on Chemical Sensors - IMCS 2018
2018-07-15 - 2018-07-19
Vienna, Austria
Gas Sensors 5
X. Li, C. Shao, X. Li, Y. Liu - Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory of UVEmitting Materials and Technology (Northeast Normal University), Changchun (China), G. Lu - State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun (China)
204 - 204


Heterostructures may exhibit not only a combination of properties from the individual component but also enhanced properties arising from the synergistic effects between the components[1]. In this study, a multi-step strategy for constructing ZnO/ZnFe2O4 hollow nanofibers with double-shell architectures was presented. The preparation of ZnO hollow nanofiber included the first preparation of PVP nanofiber through electrospinning as an hard template and then growth of ultrathin ZnO layer through atomic layer deposition (ALD) method with subsequent annealing process. Subsequently, the growth of the ultrathin ZnFe2O4 nanosheets (ca.10 nm) on the ZnO outer surface was carried out at room temperature via solution reactions in order to generate heterostructures and large surface area. When evaluated as a novel sensing material for acetone (C3H6O) detection, the resultant tube-like ZnO/ZnFe2O4 heterostructures exhibited obviously enhanced sensing response, lower operating temperature as well as faster response/recover speed during the dynamic measurement compared to the bare ZnO hollow nanofiber, which endow these ZnO/ZnFe2O4 heterostructures with a potential application in gas sensing.