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Published on: July 8, 2015
A new inorganic-organic composite of CuS/pyridine with unique sub-nanostructures
Libo Fan1, Hongwei Song, Lina Liu
1Key Laboratory of Excited State Physics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, 16 Eastern South-Lake Road, Changchun 130033, PR China.
Abstract:
Bur-like microspheres and microwires of CuS/pyridine composites were synthesized by a solvothermal method. The spheres or wires composed of a large number of nanoflakes with thickness of 10-20 nm and length of hundreds nanometers. Sub-nanostructures can be observed in the nanoflakes by the high-resolution transmission electron microscopy (HR-TEM) patterns. A large blue shift of band-gap absorption of CuS was observed in the composites, which was attributed to quantum confinement effect (QCE) induced by the sub-nanostructures. Pure Cu9S5 microspheres and CuS/Cu9S5 microwires were obtained by extracting the inorganic-organic composites with ethylene glycol. Possible formation mechanisms were discussed.
