研究目的
To prepare a novel nanorod self-assembled WO3·H2O spherical structure using hydrothermal method and investigate its gas sensing properties, particularly to ammonia.
研究成果
The study successfully prepared three different morphologies of WO3·H2O by hydrothermal method with the assistance of reaction additive K2SO4. The nanorods and nanoparticles self-assembled sphere structure showed the best gas sensitivity to ammonia, attributed to its larger surface area and porous structure. This work provides new insights into the development of WO3·H2O self-assembled nanostructures and their improvement in gas sensing properties.
研究不足
The study focuses on the synthesis and gas sensing properties of WO3·H2O nanostructures, but the long-term stability and sensitivity under varying environmental conditions were not extensively explored.
1：Experimental Design and Method Selection:
Hydrothermal method was used to synthesize WO3·H2O nanostructures with Na2WO4·2H2O as tungsten source and K2SO4 as reaction additive.
2：Sample Selection and Data Sources:
Three different samples were prepared by varying the amount of K2SO
3：List of Experimental Equipment and Materials:
Te?on-lined stainless steel autoclave, X-ray diffraction (XRD, Rigaku D/max-1200X), field emission scanning electron microscopy (FE-SEM, Nova 400 Nano).
4：Experimental Procedures and Operational Workflow:
The mixture solution was transferred into a 50 mL Te?on-lined stainless steel autoclave, sealed and maintained at 180 °C for 12 h. The precipitates were collected by centrifugation, washed, and dried.
5：Data Analysis Methods:
Gas sensing properties were measured using a AES-4SD flexible device analysis system.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
