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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 5
BKCSDE 30(5)
May 20, 2009 

Novel Fabrication of CdS Hollow Spheres Induced by Self-assembled Process
Kyong Hoon Choi, Weon Sik Chae, Jin Seung Jung, Yong Rok Kim*
Hollow, CdS, Sphere, Arrow-like nanorods, Self-assembly
Micro-size CdS spheres of hollow shape were fabricated through the self-assembly of high density arrow-like nanorods. The synthesis of the CdS hollow spheres were accomplished in an aqueous solution of cadmium nitrate and triblock copolymer (Pluronic P123) at low temperature (80 oC) through the slow release of S2- ions from thioacetamide. Morphology of the fabricated CdS hollow spheres was characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM). The results indicate that the arrow-like CdS nanorods are simultaneously grown and attached each other to form the building units that become the spheres with hollow inside as a self-assembled process. The CdS spheres have a diameter of 2~3 μm and consist of the nanorods with a length of ~800 nm. The nanocrystal building blocks have a hexagonal CdS structure.
1118 - 1120
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