USE OF TI(III) COMPLEXES TO REDUCE NI, CO, AND FE IN WATER SOLUTIONS

The possibility of using Ti(III) complexes to produce metals of the ir on subgroup in aqueous solution at room temperature has been studied. The influence of the solution composition and of the deposition condit ions on the process of the reaction has been investigated. The metal r eduction was shown to be accompanied by hydrogen generation via the re action of water reduction with Ti(III) complexes, which is catalyzed w ith the metal particles formed. The metal powders produced were invest igated by X-ray diffraction and transmission electron microscopy metho ds. The peculiar feature of the reductant used, when compared to conve ntional hydrogen-containing ones, is that upon employing it ultrafine (10-30 nm) particles of pure polycrystalline highly monodisperse nicke l, cobalt, and iron powders are produced, which form chain structures.