Борис Шуб

• Semenov Institute of Chemical Physics

Экспериментально определено увеличение скорости каталитического окисления СО на покрытиях из наночастиц золота при подаче на них электрического напряжения различной полярности и величины от внешнего источника. В условиях эксперимента при 430 °С, атмосферном давлении, начальном составе смеси 1.8% СО + 10.2% О 2 + Ar и начальном размере частиц покрыт...

Гидрирование наночастиц может являться ключевой стадией обезвреживания опасных химических веществ, в том числе монооксида углерода. В работе представлены результаты квантово-химического моделирования процесса гидрирования золотых и биметаллических золото-медных наночастиц на примере их взаимодействия с атомарным водородом при варьировании элементно...

The paper presents results of studying structural and physical characteristics of nickel nanoparticles deposited on supports of graphite, silicon, aluminum, and titanium. Adsorption properties of the nanostructured compositions have been investigated with respect to hydrogen and water molecules. Properties of the nanostructured systems have been ex...

The results of studying adsorption properties of single gold nanoparticles deposited on substrates of different nature (i.e. graphite, silicon, aluminum and titanium oxides) in regard to Н2, О2 and Н2О molecules are presented. Adsorption forms, as well as the values of adhesion coefficients and binding energy for the above reagents have been determ...

Method of complex diagnosis of physical and chemical properties of nanostructured coatings dased on single nanoparticles of metals and metal oxides by means of scanning tunneling microscopy and spectroscopy

Morphology and electronic structure of mono- and bicomponent coatings based on platinum nanoparticles and organoboron nanoparticles (OBN) on HOPG have been studied. The bi-component coating is a branched structure formed by agglomerations from clusters of nanoparticles.The results of topographic measurements indicate that this method of creating tw...

Using quantum chemical modeling in the framework of the DFT theory, it was shown that the electronic states density of the Au13C138 supercluster is most significantly reduced near the Fermi level due to adsorption of hydrogen at the gold-carbon interface. The result corresponds to our experimental data.

The morphological features of nanostructured films of tin, zinc, indium, and cerium oxides are established. The parameters of electron traps, such as adsorbed oxygen atoms and structural defects, responsible for the sensory effect are determined. An increase in the conductance of indium oxide films upon annealing in vacuum is revealed.

Представлен экспериментальный метод определения коэффициентов аккомодации ɛ электронной энергии синглетного кислорода O21Δg на поверхностях твердых тел. Найдены значения ɛ при комнатной температуре на стекле, кремнии и ряде металлов (Al, Ti, Mo, Nb, Pt, Cu, Ni, Fe, Ag). Полученные значения ɛ изменяются от ∼4×10−5 до ∼10−2.