Improving the sensing performance of SnWO4 nanostructure at room temperature based on CsPbBr3 composite

The accurate detection of hazardous gases and monitoring of ambient temperature are crucial for preserving the ecological environment, safeguarding human health, and fostering industrial advancement. In this research, a straightforward hydrothermal technique was employed to synthesize the heterogeneous nanocomposite structure of CsPbBr 3 /SnWO 4 , which facilitates the detection of ethanolamine gas at room temperature. The synthesized CsPbBr 3 /SnWO 4 heterostructures underwent further analysis using XRD , SEM , HRTEM , XPS , BET and Mott-Schottky techniques. The findings revealed that the CsPbBr 3 /SnWO 4 heterostructure exhibits a coarse cubic morphology, consisting of nano-cubic CsPbBr 3 and nano-sheet SnWO 4 . Additionally, the integration of CsPbBr 3 markedly enhances the specific surface area of the pristine SnWO 4 nanosheets. Due to its coarse surface, expansive contact area, and n-n heterojunction, CsPbBr 3 –SnWO 4 demonstrates remarkable selectivity, superior long-term stability, and a sensitivity of 45.6 to ethanolamine at ambient temperature. In conclusion, the CsPbBr 3 /SnWO 4 heterostructure, constructed from a cube with a rough surface, is anticipated to serve as an effective room temperature sensor with heightened selectivity for ethanolamine.