Characterization of copper sulfide nanostructured spheres and nanotubes synthesized by microwave-assisted solvothermal method

Copper Sulfide nanostructured spheres and nanotubes were successfully synthesized. using a microwave-assisted solvothermal method, by the decomposition of [Cu(CH(3)CSNH(2))(2)]Cl(2) complexes. formed by the reaction of CuCl(2)center dot 2H(2)O and CH(3)CSNH(2) in ethylene glycol at different pH values, and identified by CHNS/O and FTIR analyses. The decrease in bonding energy of N-H revealed the coordination of copper ions and thioacetamide molecules. It was specified that nitrogen atoms of thioacetamide molecules were used to form Cu-thioacetamide complexes. XRD, SEM, TEM and SAED analyses show that the products were hexagonal CuS spheres in an extremely low pH solution, and hexagonal CuS nanotubes at a pH 13. Their Raman spectra show sharp peaks at 473 cm(-1), identified as the S-S stretching mode Of S(2) ions at the 4e sites. (C) 2009 Elsevier B.V. All rights reserved.