Yuan Qiu-li, Nie Qiu-lin, Chen Wei-xiang, Xu Zhu-de
Department of Applied Physics, School of Science and Art, Hangzhou Institude of Electronic Engineering, Hangzhou 310037, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Jun;25(6):971-4.
Polyvinylpyrrolidone (PVP)-modified CdS nanorods were prepared by a hydrothermal reaction of CdCl2 2.5H2O and (NH4)2S with 10 wt% ethylenediamine aqueous solution as solvent and 1.0 wt% PVP as additives. The obtained products were characterized by means of XRD, TEM, IR, DTA-TG, UV-Vis and PL spectroscopies. The surface-modified CdS nanorods showed narrow size distribution and enhanced luminescence property compared with that of the unmodified ones. The UV-Vis spectra exhibited a structure peak. These results were attributed to the surface passivation of the CdS nanorods by the PVP molecules.
以2.5水合氯化镉（CdCl₂·2.5H₂O）和硫化铵（(NH₄)₂S）为原料，以10 wt%乙二胺水溶液为溶剂、1.0 wt%聚乙烯吡咯烷酮（PVP）为添加剂，通过水热反应制备了PVP修饰的硫化镉（CdS）纳米棒。采用X射线衍射（XRD）、透射电子显微镜（TEM）、红外光谱（IR）、差示扫描量热-热重联用（DTA-TG）、紫外可见光谱（UV-Vis）和光致发光光谱（PL）等手段对所得产物进行了表征。与未修饰的CdS纳米棒相比，表面修饰的CdS纳米棒尺寸分布窄且发光性能增强。紫外可见光谱呈现出一个结构峰。这些结果归因于PVP分子对CdS纳米棒的表面钝化作用。
