Novel one-step route for synthesizing CdS/polystyrene nanocomposite hollow spheres

被引：137

作者：

Wu, DZ ^{[1
]}

Ge, XW ^{[1
]}

Zhang, ZC ^{[1
]}

Wang, MZ ^{[1
]}

Zhang, SL ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Polymer Sci & Engn, Hefei 230026, Anhui, Peoples R China

来源：

LANGMUIR | 2004年 / 20卷 / 13期

关键词：

D O I：

10.1021/la049405d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

CdS/polystyrene nanocomposite hollow spheres with diameters between 240 and 500 nm were synthesized under ambient conditions by a novel microemulsion method in which the polymerization of styrene and the formation of CdS nanoparticles were initiated by gamma-irradiation. The product was characterized by transmission electron microscopy (TEM), field-emission scanning electron microscopy (FESEM), X-ray powder diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA), which show the walls of the hollow spheres are porous and composed of polystyrene containing homogeneously dispersed CdS nanoparticles. The quantum-confined effect of the CdS/polystyrene nanocomposite hollow spheres is confirmed by the ultraviolet-visible (UV-vis) and photoluminescent (PL) spectra. We propose that the walls of these nanocomposite hollow spheres originate from the simultaneous synthesis of polystyrene and CdS nanoparticles at the interface of microemulsion droplets. This novel method is expected to produce various inorganic/polymer nanocomposite hollow spheres with potential applications in the fields of materials science and biotechnology.

引用

页码：5192 / 5195

页数：4

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