精品文档---下载后可任意编辑BiVO4 基复合光催化剂的制备与表征中期报告摘要：本报告介绍了一种用于制备二氧化钒基复合光催化剂的方法，并对所制备的复合材料进行了表征。该复合材料由二氧化钒（V2O4）和五氧化二钒（V2O5）混合物以及氧化钡（BaO）和二氧化钛（TiO2）混合物制备而成。制备步骤如下：首先，在水中加入 V2O4 和 V2O5 混合物，并在搅拌的过程中逐渐滴加 BaO 和 TiO2 混合物。随着 BaO 和 TiO2 的添加，颜色逐渐变为浅蓝色。最终，在 60℃的环境中保持搅拌 30 分钟，然后将其离心和洗涤，并用扫描电子显微镜（SEM）和 X 射线衍射（XRD）对其进行表征。SEM 结果显示，复合材料具有许多细小的颗粒，平均直径约为 50 nm。XRD 分析表明，复合材料的结构为单斜晶系，并且其晶格常数比V2O4 和 V2O5 的明显增加。最终，在紫外光谱仪下进行了光催化活性测试，结果表明该复合材料具有较高的光催化活性。本报告证明了所制备的复合材料具有潜在的光催化应用，并为进一步优化复合材料的制备方法和光催化效率提供了重要信息和启示。关键词：光催化剂；复合材料；二氧化钒；氧化钡；二氧化钛；表征。Abstract:This report presents a method for preparing a vanadium dioxide-based composite photocatalyst and characterizes the resulting composite material. The composite material is prepared from a mixture of vanadium tetraxide (V2O4) and vanadium pentoxide (V2O5) and a mixture of barium oxide (BaO) and titanium dioxide (TiO2).The preparation steps are as follows: Firstly, the mixture of V2O4 and V2O5 is added to water, and BaO and TiO2 mixture are gradually added during stirring. As BaO and TiO2 are added, the color gradually changes to light blue. Finally, the mixture is maintained at 60°C under stirring for 30 minutes, then centrifuged and washed, and characterized using scanning electron microscopy (SEM) and X-ray diffraction (XRD).精品文档---下载后可任意编辑The SEM results show that the composite material has many small particles with an average diameter of about 50 nm. XRD analysis shows that the structure of the composite material is monoclinic, and its lattice constant is significantly increased compared with V2O4 and V2O5. Finally, photocatalytic activity tests were carried out under a UV spectrophotometer, and the results showed that the composite material has high photocatalytic activity.This report demonstrates that the composite material prepared has potential applications in photocatalysis and provides important information and inspiration for further optimizing the preparation method and photocatalytic efficiency of the composite material.Keywords: photocatalyst; composite material; vanadium dioxide; barium oxide; titanium dioxide; characterization.
