Guang pu xue yu guang pu fen xi = Guang pu 2005-06-01

[Preparation and spectral properties of PVP-modified CdS nanorods].

Qiu-li Yuan, Qiu-lin Nie, Wei-xiang Chen, Zhu-de Xu

Index: Guang Pu Xue Yu Guang Pu Fen Xi 25(6) , 971-4, (2005)

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Abstract

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.