g-C3N4-Cd2SnO4复合材料的制备及其气敏性能

Preparation and Gas-Sensing Properties of g-C3N4-Cd2SnO4 Composites

摘要:

摘 要：采用水热-煅烧法制备了Cd2SnO4，并使用超声混合法制备一系列不同质量比例的g-C3N4-Cd2SnO4复合材料。通过X射线衍射（XRD）、扫描电镜（SEM）、X射线光电子能谱（XPS）等方法对g-C3N4-Cd2SnO4复合材料进行了表征，研究了不同比例的g-C3N4-Cd2SnO4复合材料的气敏性能。气敏性能研究结果表明：当g-C3N4的加入量为2.5 wt%（质量分数）时，g-C3N4-Cd2SnO4复合材料对于异丙醇气体的灵敏度最高，在170℃的最佳工作温度下，对100 μL/L的异丙醇气体的灵敏度可达117，与纯Cd2SnO4的灵敏度1.4相比提高了78倍，最低检测限为0.1 μL/L。

Abstract:

Abstract: Cd2SnO4 was prepared by hydrothermal calcination, and a series of g-C3N4- Cd2SnO4 composites with different mass ratios were prepared by sonication mixing method. The materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and other methods. The gas-sensing properties of g-C3N4-Cd2SnO4 composites in different proportions were studied. The results show that when the addition amount of g-C3N4 was 2.5 wt% (mass fraction), the sensitivity of g-C3N4-Cd2SnO4 composites to gas was the highest, and the response of 100 μL/L isopropanol gas was up to 117 at the optimal working temperature of 170°C, which was 78 times higher than that of pure Cd2SnO4 with a sensitivity of 1.4, and the low detection limit was 0.1 μL/L.