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- W2949277412 abstract "The gas sensing performance of ZnO thin film was enhanced by polyaniline (PAni) composite, which was deposited on the thin film under different magnetic flux density (0.0, 0.3, and 0.5 T). X-ray diffraction (XRD) patterns, Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS) results indicated that the heterostructures were created by ZnO thin film and PAni composites. The XRD and XPS results showed that different magnetic field caused the changes in structure and chemical bondings of the PAni composites. Scanning electron microscopy (SEM) images showed that the grain size of the PAni composites was also affected by the different magnetic field intensity. Gas sensing measurements of the samples indicated that the operating temperature of the sensors to sense methanol vapor was decreased from 150 °C for the gas-sensing device-based pristine ZnO thin film to 60 °C for the gas-sensing device-based ZnO/PAni composite, which was synthesized under 0.5 T of the magnetic flux density. In addition, the sensor response was increased by the increase of magnetic flux density. Furthermore, ZnO/PAni composite, which was formed by 0.5 T of magnetic flux density, performed a good selectivity compared to the other samples. In fact, characterization and gas sensing measurements indicated the protonation and deprotonation process of ZnO/PAni as well as lower activation energy play two essential roles in the enhancement of the gas sensing performance." @default.
- W2949277412 created "2019-06-27" @default.
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- W2949277412 date "2019-09-01" @default.
- W2949277412 modified "2023-10-18" @default.
- W2949277412 title "High performance of methanol gas sensing of ZnO/PAni nanocomposites synthesized under different magnetic field" @default.
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- W2949277412 doi "https://doi.org/10.1016/j.jallcom.2019.06.088" @default.
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