【摘要】 以Cd（NO₃）2·6H₂O和Na₂S为原料,采用强碱性阴离子交换树脂沉淀法制备了CdS纳米粒子,XRD和TEM对样品表征结果表明,CdS纳米粒子平均粒径为6.88nm,颗粒大小较均匀,形貌为表面粗糙的球体。以CdS为催化剂,在太阳光下降解亚甲基蓝溶液2.5 h,降解率可达99.0%。重复使用催化剂5次,降解率仍可达98.1%,表明该催化剂具有较好的稳定性。更多还原

【Abstract】 CdS nanoparticles were prepared by ion exchange method from Cd（NO₃）₂· 6H₂O and Na₂S.The particles were characterized by XRD and TEM,which showed that the particles were spheres with average diameter of 6.88 nm,mean particle size and coarse surface.Methylene blue degradation rate of 99.0% was obtained over the CdS nanoparticles under solar irradiation for 2.5 h.The catalyst could be repeatedly used for five times with degradation rate of over 98.1% ,which indicated that the catalyst had good stability.更多还原