硫化镉/金属-有机框架复合材料的制备及光催化应用

Preparation and Photocatalytic Application of Cadmium Sulfide/Metal-Organic Framework Composites

金属-有机框架(Metal-Organic Frameworks,MOFs)是近年来受到广泛关注的一类新型多孔材料,具有比表面积大、孔隙率高、结构多样、易于调节和修饰等优点。然而受可见光吸收效果差、光生电子利用效率低等问题影响,纯MOFs在光催化领域的应用比较局限。将MOFs与硫化镉半导体结合,不仅可以拓宽MOFs材料的吸光范围和避免硫化镉纳米粒子聚集,也能促进光生电子的传输,减少电子-空穴复合,从而提升光催化活性。综述了硫化镉/金属-有机框架复合材料的制备方法及其在光催化领域的应用进展,指出了存在的问题和可能的发展方向。

Metal-Organic Frameworks(MOFs)are a kind of porous material that has attracted wide attention in recent years.They have the advantages of large specific surface area,high porosity,diversified structure,and easy adjustment and modification.Due to the poor absorption of visible light and low utilization efficiency of photo-generated electrons,the application of MOFs in the field of photocatalysis is relatively limited.Combining MOFs with Cadmium sulfide semiconductor can not only broaden the light absorption range of MOF materials and avoid the accumulation of CdS nanoparticles,but also promote the transmission of photogenerated electrons and reduce the electron-hole recombination,thus improving the photocatalytic activity.Preparation methods of cadmium sulfide/metal-organic framework composites and their applications in the field of photocatalysis were reviewed,the existing problems were pointed out,and the possible development direction was forecasted.