Хімія та хімічні технології

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End date: 2013Subject: search.filters.subject.nanoparticles

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    Polyvinylpyrrolidone Matrix as an Effective Reducing Agent and Stabilizer during Reception of Silver Nanoparticles in Composites
    (Видавництво Львівської політехніки, 2013) Semenyuk, Nataliya; Kostiv, Ulyana; Dudok, Galyna; Nechay, Jaroslav; Skorokhoda, Volodymyr
    The use of polyvinylpyrrolidone matrix as an effective reducing agent and stabilizer during reception of silver nanoparticles in composites is substantiated. The influence of various factors on patterns of obtaining silver nanoparticles and their size.
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    Electrochemical deposition of silver nanostructures from aqueous solutions in the presence of sodium polyacrylate
    (Видавництво Львівської політехніки, 2013) Topchak, Roman; Okhremchuk, Yevhen; Kuntyi, Orest
    The silver nanostructures obtaining was investigated by electrochemical deposition from aqueous solutions ((1…10) mM AgNO3 + 50 mМ NaPA) onto graphite substrate. The influence of the concentration of silver ions and cathodic potential values in the range E = -0,2 ... -1,0 V on surface filling degree and geometry of silver particles was (had been) studied. It is shown, the discrete silver particles ranging in size from 50 to 400 nm with a uniform distribution on the surface of the substrate are formed. It is established that decreasing of the concentration of silver ions and increasing of cathodic potential tends to reduce the particle size.
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    Features of methane steam reforming over NiO aerosol nanoparticles
    (Видавництво Львівської політехніки, 2011) Glikin, Marat; Kudryavtsev, Sergiy; Mahmmod, Saif
    This paper represents as an investigation of methane steam reforming over NiO aerosol nanoparticles. Its been approved that the aerosol nanoparticles play the major rule in the Techcnology of aerosol nanocatalysis (AnC) which been applied on the reaction of methane steam reforming. The AnC allows us to obtain super active catalysts in virtue of permanent mech-chem activation over the surface of catalyst particles in situ.