片状和颗粒状γ-Bi2MoO6的水热合成及可见光催化性能

摘要

Flake-like and nanoparticles γ-Bi2MoO6 were prepared by a hydrothermal method using citric acid as the capping agent. The obtained products were characterized by X-ray diffraction, scanning electron microscopy, and UV-vis diffuse reflectance spectroscopy. A possible formation mechanism of the flake-like and nanoparticles γ-Bi2MoO6 was proposed. Photocatalytic experiments showed that nanoparticles γ-Bi2MoO6 exhibited good photocatalytic activities for degradation of crystal violet solution under sunlight irradiation.%采用水热法及柠檬酸辅助水热法分别制备了片状的和颗粒状的γ-Bi2MoO6,利用X射线粉末衍射(XRD)、场发射扫描电子显微镜(FESEM)和UV-vis漫反射光谱(DRS)对产物进行了表征和检测,探讨了片状的和颗粒状的γ-Bi2MoO6可能的形成机理.以太阳光为光源对结晶紫溶液进行光催化降解.实验结果表明:颗粒状的γ-Bi2MoO6的光催化活性略优于片状的γ-Bi2MoO6.