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Information × Registration Number 0211U002483, 0110U004579 , R & D reports Title Supramolecular interactions on the surface of nanoscale inorganic, carbon and hybrid materials, their role and seeks to use in solving problems of modern chemical engineering and biomedical practice popup.stage_title Head Kartel Mykola Tymofiyovych, Registration Date 10-02-2011 Organization Institute of Surface Chemistry of the National Academy of Sciences of Ukraine popup.description2 The procedure of the enzyme activity research (catalase, amylase, urease) of nanoporous carbon materials such as KSN and DAC. A series of investigation of quantitative evaluation, simulation and comparison of catalytic ability of samples of activated carbon type KSN and DAC, their modified forms and enzymes (catalase, amylase, urease) in the reaction of catalytic decomposition of substrate (hydrogen peroxide, starch, and ammonia, respectively) are carried out. The influence of surface chemistry and pH on enzymatic activity of the studied objects are investigated. It was established that the kinetics of enzymatic reaction means can be described as active carbon adsorbents, and enzymes, allowing comparison of the activity.The studied catalysts situated in order to reduce their catalase, amylase and urease activity. The sorption of cations Cd(II) on the surface of amorphous nanoporous silica chemically modified ?-cyclodextrin and its functional derivatives are studied. It was shown that the sorption of cations Cd(II) described by the Freundlich isotherm equation for heterogeneous surfaces . It was established that there are two parallel processes on the surface of ?- cyclodextrin-containing silica on the basis of the kinetic curves of sorption, analyzed within the Laherhren model for pseudo-first and pseudo-second order reactions. It was proved that the significant increase in sorption of Cd(NO3)2 is the result of formation of uncharged supramolecular structures (the composition of which correlates with polarization of ?-cyclodextrin functional substitutes) on the surface nanoporous organic-inorganic materials. Using tetraethoxysilane and trifunctional silanes, supermagnetic Fe3O4 particles, which have ?Si(CH2)3NH2, ?Si(CH2)3NH(CH2)NH2 and [?Si(CH2)3]2NH aminogroups in the surface layer, were synthesized by the developed techniques. According to the XRD data the synthesized particles keep the Fe3O4 magnetite structure, which is proper for the initial Fe3O4. The thermograms denote the high thermal stability of the surface layers - their destruction begins about 250°С. The DRIFT spectra indicate the formation of the silica bounds network in the surface layers of nanoparticles. This spectra also indicate the existence of hydrogen bounds between aminogroups and silanol groups with the participation of water molecules aided. All synthesized materials show magnetic properties and have a perspective for their further use in medicine. Product Description popup.authors Бєлякова Л.О. Бакалінська О.М. Глевацька К.В. Зуб Ю.Л. Мельник І.В. popup.nrat_date 2020-04-02 Close