УДК 546.55/59:620.3-022.532
Shishkina S.N., Dryzhak A.S., Poshelyuzhna M. O., Ivanchuk M.V., Galagan R.L.
SYNTHESIS OF CARBON SUPPORTED BIMETAL NANOCOMPOSITES PREPARED USING REPLACEMENT REACTION BETWEEN COPPER AND NOBLE METAL
B. Khmelnitsky National University in Cherkasy
В современной химии большим потенциалом для применения во многих отраслях техники владеют наноразмерные композиты на основе меди благодаря их высокой електропроводимости, каталитической активности к ряду реакций и невысокой цене. В данной работе предложен метод приготовления биметаллических нанокомпозитов на основе меди с благородными металлами нанесенных на карбоновую подложку.
Ключевые слова: нанокомпозиты; медь; диффрактометрия.
In modern chemistry a huge potential for application in variety of technical areas have nanoranged composites based on copper because of their high electrical conductivity, catalytic activity for the range of reactions and low coast. In the present work a method enabling the preparation of bimetal nanocomposite based on copper with noble metal placed on the carbon support is proposed.
Key words: nanocomposites; copper; diffractometry.
Introduction
Recent research activities are often focused on the synthesis and fabrication of different size and shape of metal nanoparticles due their fascinating optical, electronic and catalytic properties [1-2]. Among those nanometer size metal particles copper and copper based compounds plays a significant role owing to its biological and catalytic activity, optical and electronic properties, excellent electrical conductivity and simultaneously low cost. One of the important copper nanoparticles applications are as a catalyst for various chemical transformations, in particular, water-gas shift [3] and gas detoxification reactions [4], and as an electrocatalyst in solid-oxide fuel cells [5]. However, preparation of copper nanoparticles has a great difficult due a low Cu°/Cu2+ redox potential (+0.34eV) which make them prone to fast oxidation and, consequently, are hard to synthesize chemically. To prevent the oxidation copper nanoparticles are cover by organic or inorganic reagents, or by other metal. In the last case we can not only get a stabile in ambient condition copper nanoparticles but also achieve some advantageous properties through formation of bimetal composites. Furthermore, additional components might stabilize or strength the nanoparticles and in consequence make a catalyst more resistible to some deleterious effects, such as chemical poisoning and mechanical attrition. A wide range of useful properties of bimetal nanocomposites make a strong motivation for their production.