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A.M.
Lipanov, V.I. Kodolov, N.V. Khokhriakov,
Basic Research
– High educational center of chemical physics and mesoscopy Abstract For the synthesis of metallic nanoparticles and nanowires in carbon shells, it is expedient to use the metal ions that can be reduced in nanoreactors by the interaction with the negatively charged walls of nanoreactors. The synthesis is a reduction-oxidation process, therefore aromatic hydrocarbons or organic polymers together with metal salts are reduction-oxidation pairs. Within the framework of Hartree-Fock theory with the minimal basis 3-21 G, the energies of molecules and molecular fragments are calculated. In this energy model, the equilibrium atomic geometry of the fragments and the interaction energy of the reaction centers are determined. The modeling results are realized in the experiments starting with mixing melts or solutions of the 3d metal chlorides (Cr, Mn, Fe, Co, Ni, Cu) with aromatic hydrocarbons or polyvinyl alcohol solution. Heating of the reaction masses up to 400C is carried out in a step-like manner. The control over the processes is performed using spectral, microscopic and chemical methods. Nanoproducts are studied with the use of X-ray photoelectron spectroscopy, transmission electron and scanning electron microscopy, diffractometry and the method of electron microdiffraction. Depending on the conditions of the process, giant fullerenes and tubulenes inclusive of metals and metal-containing compounds are formed.
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Presented at the International Congress
of Nanotechnology, November 7-10, 2004 San Francisco, USA
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