No abstract

No abstract

No abstract

Сatalytically active hybrid polymer-oxide material, based on molybdenum oxide compounds with iron group (Fe, Ni, Co) metals and polyvinyl-pyrrolidone, is obtained by method of transient electrolysis. Surface morphology and elemental composition of the obtained hybrid polymer-oxide material are examined with an electron microscopy and X-ray micro-fluorescent microanalysis; its phase composition and its chemical bonds structure formation between metal oxide compounds and polymer macromolecules are determined by X-ray phase analysis and IR spectroscopy. High catalytic activity of the obtained hybrid polymer-oxide material in the model reaction of hydrogen peroxide decomposition by the gaso-metric method is shown, which allows us to conclude that it is possible to use the obtained hybrid polymer-oxide materials as catalysts for wastewater treatment to purify it from organic and inorganic impurities.

A method for the preparation and properties of an alloy based on nickel is discussed. An electrolyte for the deposition of a tin-nickel alloy has been developed. The influence of electrolysis regimes and electrolyte composition on the physical and mechanical properties (microhardness, spreading coefficient of solder, transient electrical resistance, coating ability to soldering, phase composition, porosity, adhesion, corrosion resistance) of an electrolytic coating based on nickel-tin alloy precipitated from a chloride electrolyte. The possibility of using a tin-nickel alloy as a solderable coating instead of gold and silver is shown.