多孔氧化铜空心微球的一步法制备及其光催化性能

采用一步法成功制备出多孔氧化铜空心微球,用SEM、XRD和FTIR对制得的样品进行了表征。研究发现,碳源、反应温度、反应时间、CuSO4浓度等实验条件在多孔微球的制备过程中起着重要作用。在实验结果的基础上,提出了多孔氧化铜空心微球的形成机理。制备的多孔氧化铜空心微球的比表面积为409 m2.g-1,平均孔径为3.15 nm,总孔体积为0.256 cm3.g-1,这种空心微球具有量子尺寸效应并对罗丹明B有较高的光催化性能。

Porous CuO Hollow Microspheres: One-Step Preparation and Photocatalytic Performance

Porous copper oxide (CuO) hollow microspheres were fabricated via a one-step method. The products were characterized by SEM, XRD and FTIR. The carbon source, hydrothermal temperature and time and the concentration of CuSO₄ play crucial roles in controlling the morphology of the title material. A formation mechanism was proposed based on the characterization results. The BET specific surface area of the hollow spheres is 409 m²·g^-1, the average pore size is 3.15 nm, and the total pore volume is 0.256 cm³·g^-1. The material exhibits a quantum size effect in UV spectrum and higher photocatalytic activity for degradation of rhodamine B (RhB) aqueous solution.