Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1527743 | Materials Chemistry and Physics | 2006 | 6 Pages |
Abstract
Trigonal and hexagonal CuS (covellite) nanoflakes with controlled size (10-200Â nm, and thickness of 3.6-5Â nm) were synthesized through the reaction between copper acetylacetonate and sulfur in oleylamine. Size and shape of the products could be tuned by reaction parameters and reactant concentration. The as-prepared flakes have smooth surfaces and self-assemble face-to-face each other. High-resolution transmission electron microscopy and electron diffraction show that the nanoscale flakes were single-crystal hexagonal covellite. Formation mechanism of the nanoflakes is discussed. UV-vis spectra reveal that the samples have blue-shift absorbance onsets owning to the quantum size effects.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
H.T. Zhang, G. Wu, X.H. Chen,