PrFeO3 enhanced In2O3-based sensors for n-butanol.

In this experiment, PrFeO 3 -In 2 O 3 nano-composites were prepared by electrospinning and hydrothermal approach. In particular, the PrFeO 3 -In 2 O 3 material has a rough surface, which can enhance the contact area with the gas, and further analysis shows that the band gap of the PrFeO 3 -In 2 O 3 material is reduced compared with the pure In 2 O 3 material. Compared with pure In 2 O 3 , PrFeO 3 -In 2 O 3 composite has better sensing performance for n-butanol. The results show that the PrFeO 3 -In 2 O 3 based sensor has remarkable gas sensing performance for n-butanol gas. Especially the response to 100 ppm n-butanol is as high as 95.98 at 190 °C, and good repeatability. In addition, the response of PrFeO 3 -In 2 O 3 based sensor shows a good linear relationship with the concentration,n-butanol gas can be quantitatively measured.In this work, X-ray diffraction (XRD), X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), specific surface area testing (BET), and UV–Vis spectroscopy were used to characterize the materials. [ABSTRACT FROM AUTHOR]