甲壳素/BiOI复合材料的制备及光催化性能研究

Preparation and Photocatalytic Performance of Chitin/BiOI Composites

采用水解法在醋酸的辅助作用下合成了新型光催化甲壳素/BiOI复合材料.利用X-射线衍射(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱(FT-IR)、比表面积(BET)、紫外-可见漫反射光谱(DRS)、光致发光光谱(PL)等对样品的结构、形貌和光学性能进行了研究.光催化实验结果表明,甲壳素/BiOI复合材料的可见光降解能力比纯的BiOI明显提升.其中样品7wt%-甲壳素/BiOI性能最好,在120min内能够降解88.83%的甲基橙(MO)和98.01%的罗丹明B(RhB).

A novel photocatalyst chitin/BiOI composite was synthesized by hydrolysis with the assistance of acetic acid.The structure,morphology and optical properties of the samples were investigated by X-ray diffraction(XRD),S canning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR),Specific surface area(BET),UV-visible diffuse reflectance spectroscopy(DRS)and photoluminescence spectroscopy(PL).The results of photocatalytic experiments showed that the photocatalytic activity of the composite was significantly higher than that of pure BiOI.Among them,the 7 wt%-CB sample had the best performance,which could degrade 88.83%methyl orange(MO)and 98.01%rhodamine B(RhB)within 120 min.