g-C3N4/Bi12O17Cl2复合物的制备及其光催化性能

以硝酸铋、氯化钠和氢氧化钠为原料用液相沉淀法制备g-C₃N₄/Bi₁₂O₁₇Cl₂复合光催化剂，并用X射线衍射(XRD)、傅里叶红外光谱(FT-IR)、扫描电子显微镜(SEM)、紫外-可见漫反射光谱(UV-Vis DRS)等手段表征其组成、微观形貌和性能，以罗丹明B为模拟污染物研究了在可见光照射下g-C₃N₄对g-C₃N₄/Bi₁₂O₁₇Cl₂复合光催化剂活性的影响及其光催化机理。结果表明，2% (质量分数) g-C₃N₄/Bi₁₂O₁₇Cl₂复合光催化剂的光催化性能最好，见光90 min后对罗丹明B的降解率达到98%。

Preparation and Photocatalytic Properties of g-C3N4/Bi12O17Cl2 Composites

Composites of g-C₃N₄/Bi₁₂O₁₇Cl₂ were prepared by a simple liquid phase precipitation method with bismuth nitrate, sodium chloride, sodium hydroxide and graphitic carbon nitride as raw material. The composition and morphology of the prepared composites were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The effect of g-C₃N₄ on the photocatalytic activity of g-C₃N₄/Bi₁₂O₁₇Cl₂ composites were evaluated with Rhodamine B as the simulated pollutant under visible light. The results show that the photocatalytic performance of 2 % g-C₃N₄/Bi₁₂O₁₇Cl₂ composite is the best, after 90 min of light exposure the photocatalytic degradation rate of RhB reached 98.64%.