In the present paper,CdS nanoparticles of different size surface-capped with thiourea [expressed as CdS/SC(NH_2)_2] were prepared by sol-gel method,and characterized by XRD,TEM,IR and PL.

• 采用溶胶-凝胶法合成硫脲表面修饰的硫化镉纳米粒子[CdS/SC(NH2)2],研究硫脲的用量对其粒径的影响,用X射线粉末衍射、透射电子显微镜,红外光谱以及荧光光谱等手段进行了表征。