CdS纳米微粒的聚四氟乙烯多孔膜法制备及其表面修饰

Preparation of CdS Nanoparticles via Porous PTFE Membrane and Their Surface Modification

在聚四氟乙烯多孔膜模板的控制下 ,将 0 1mol/L的Na2 S和CdCl2 进行跨膜传输和分子组装 ,成功制得平均粒径为 3 2nm的CdS纳米粒。XRD研究表明 ,产物为立方闪锌矿结构 ;荧光光谱上在 5 2 2nm处有较强的发射光谱。经巯基乙酸修饰的CdS纳米粒在红外光谱上 16 80cm-1处具有羰基的特征峰。

The CdS particles of average size of 3.2 nm were produced from 0.1 mol/L Na 2S and CdCl 2 solutions via transmembrane transportation and molecular assembly under inducement of polytetrafluoroethylene(PTFE) porous membrane. XRD results indicated that the products are of cubic zinc blende structure. The particles exhibit a strong emission peak at 522 nm in the photoluminescence(PL) spectrum. The surface of CdS nanoparticles have been modified with HSCH 2COOH, and there is a characteristic peak of the group C O at 1 680 cm -1 in the FTIR spectrum of the modified crystals.