Innovative application exploration of high-purity tungsten oxide in ethanol sensors

  In the field of semiconductor sensors, high-purity tungsten oxide powder, with its unique physical and chemical properties, is gradually becoming the focus of researchers and the industry. This material, with its high main content and low impurity content, coupled with a moderate bandgap, large specific surface area and excellent chemical stability, has brought unprecedented performance improvements to semiconductor sensors, especially new ethanol sensors.

  As a key device for detecting ethanol concentration, the performance improvement of ethanol sensors is of great significance to many fields, such as food safety, environmental monitoring and medical health. High-purity tungsten oxide powder, as a sensing medium, can significantly improve the overall quality of ethanol sensors. By optimizing its composition and structure, it can not only improve the accuracy of detection, but also significantly speed up the response speed, making ethanol sensors more efficient and reliable in practical applications.

  In order to further explore the application potential of high-purity tungsten oxide in ethanol sensors, researchers started from the composition and structure of the material and used a solvothermal method to prepare a series of tungsten oxide-based nano-semiconductor materials with different composition, structure and morphology characteristics. They used ethanol, ethylene glycol and trace water as solvents, tungsten hexachloride as tungsten source, and successfully prepared tungsten oxide semiconductor materials with various morphologies and structures by precisely controlling the reaction time, temperature and water volume.

  Subsequently, the researchers used advanced testing methods such as X-ray diffraction (XRD) and scanning electron microscopy (SEM) to characterize the composition, structure, morphology and particle size of the prepared nano-tungsten oxide in detail. On this basis, they further oxidized the tungsten oxide obtained under different conditions, and finely controlled the composition and morphology of the samples by changing factors such as oxidation time.

  The results showed that the samples prepared under solvent thermal conditions had higher adsorption properties, especially the samples with nanosheet structure, which showed excellent adsorption effects due to their large specific surface area. In addition, the samples after oxidation treatment can obtain nano-heterogeneous structures, and tungsten oxide with this structure performs best in terms of catalytic performance.   However, as the oxidation time increases, the nano-heterogeneous structure will change, resulting in a decrease in the catalytic effect of the sample. Therefore, by precisely controlling the oxidation time of tungsten oxide, the researchers successfully achieved effective control of the chemical composition and heterogeneous structure of tungsten oxide-based semiconductor materials.

 

  In addition to ethanol sensors, high-purity tungsten oxide semiconductors also show broad application prospects in the fields of capacitance, optical materials, photocatalysis and photoelectric conversion.