不同形貌CuS微球的可控合成及光催化性质研究

摘要

Pinecone and flower-like CuS microspheres with a diameter of about 1.6 and 4.9 μm have been synthesized via a direct reaction of CuCl2aqueous solution with thiourea (Tu)and polyvinylpyr-rolidone (PVP).The control over these CuS nanostructures with different morphologies was achieved by adjusting the mass of PVP and reaction time.Pinecone-like CuS microspheres were assembled from submicron sheets.The decomposition rate of malachite green (MG)reaches up to 99%.The photodeg-radation of MG catalyzed is a pseudo first-order reaction.%在氯化铜-硫脲-聚乙烯吡咯烷酮水热体系中制备出直径分别为1.6 μm和4.9 μm的CuS松果状微球和纳米花.通过改变聚乙烯吡咯烷酮(PVP)的用量和反应时间,实现不同形貌CuS纳米结构的可控合成.实验结果表明,由微小片组装的CuS松果状微球在30 min降解99% 的孔雀石绿(M G)染料,其催化过程符合准一级反应动力学.