Browsing by Author "Zazhigalov, Valery"

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    Influence of mechanochemical and ultrasonic treatments on the structure and properties of ZnO-MoO3 (1:1) composition
    (Lviv Polytechnic Publishing House, 2016) Sachuk, Olena; Kopachevska, Natalya; Zazhigalov, Valery; Starchevskyy, Volodymyr; Institute for sorption and problems of endoecology of NAS of Ukraine; Lviv Polytechnic National University
    Oxide mixture ZnO-MoO3 (1:1) was modified by mechanochemical (during 2, 4 and 8 hours in air) and sonochemical (1 hr in water solution) treatments. The properties of obtained samples were studied by means of XRD, IR-spectroscopy, BET, DTA-TG, SEM methods. It was shown, that both kinds of treatments lead to the change of oxides crystalline structure, their surface morphology, porous structure and decrease particle size. The formation β-ZnMoO4 in the milling process and β-Мо8О23 at ultrasonic effect it was found.
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    The mechanochemical influence on the physico-chemical properties of CeO2-MoO3 system
    (Видавництво Львівської політехніки, 2017-12-23) Sachuk, Olena; Zazhigalov, Valery; Diyuk, Olena; Institute for Sorption and Problems of Endoecology of NAS of Ukraine, Kyiv
    Oxide system CeO2-MoO3 with atomic ratio Ce/Mo = 15:85, 25:75, 50:50 and 75:25 was modified by mechanochemical treatment (MChT) during 2, 4 and 8 hours in air. Obtained samples were studied by means of XRD, BET, ТЕМ, sorption from the solution methods. It was shown, that mechanochemical modification leads to change of oxides crystalline structure, their surface morphology, porous structure and sorption ability to safranin-T dye.