Abstract
In this study, zinc oxide (ZnO) nanofibers were prepared using the electrospinning method, and the effects of different spinning voltages and annealing temperatures on the fiber structure were tested. La0.8Sr0.2FeO3 (LSFO) perovskite film was prepared by a sol-gel method. Then we dip LSFO on ZnO nanofiber and grow it on the interdigital gold electrode substrate for gas sensors. The results show that the ZnO/LSFO heterostructure gas sensor has a good sensing response to H2S gas and exhibits good gas selectivity. The best gas response is 52.17% under 4 ppm H2S and work temperature 200°C, which has good recovery and reproducibility.
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