Synthesis of Sn doped-Bi2WO6 nanoslices for enhanced isopropanol sensing properties

Bi2WO6 has sparked a lot of attention as a gas sensor in recent years. However, in most cases, the working temperature is quite high. The Sn doped- Bi2WO6 slice-shaped nanostructure material was generated using a cost-effective one-step hydrothermal process in this study. The material was evaluated using X-ray diffraction (XRD), field emission scanning microscope (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) and an energy-dispersive X-ray detector (EDX). The results show that the 5 wt% Sn doped- Bi2WO6 sensor has outstanding isopropanol gas sensitivity. The sensor's optimal operating temperature is 260 degrees C, and it responds to low isopropanol concentrations. The unique interfacial interaction between 2D slice-shaped nanostructures and Sn doping, which provides additional catalytic active sites on the Bi2WO6 surface and improves electrical responsiveness and gas sensitivity, is responsible for the improved gas sensitivity.

Automated summary

A Sn-doped Bi2WO6 slice-shaped nanostructure material was prepared using a one-step hydrothermal process. The 5 wt% Sn-doped Bi2WO6 sensor showed excellent sensitivity to isopropanol gas, with an optimal operating temperature of 260 degrees C.