E3S Web Conf.
Volume 266, 2021Topical Issues of Rational Use of Natural Resources 2021
|Number of page(s)||11|
|Section||Technologies of Complex Processing of Mineral Raw Materials|
|Published online||04 June 2021|
Mechanochemical synthesis of adsorbents based on silicon oxycarbide composites
Department of Technology of Inorganic Substances, Faculty of Inorganic Chemistry and Technology, Ivanovo State University of Chemistry and Technology, Ivanovo, Russia
In the work, an attempt was made to mechanochemically synthesize silicon oxycarbide composites from activated carbon and silica. Structure of the composites was studied using powder X-ray diffraction and IR spectroscopy. Formation of silicon oxycarbides was confirmed by presence of Si-O-C bond. Influence of the raw materials ratio on structural and chemical properties of resulting composites was revealed. With an increase of silica share in the initial mixture, a decrease in specific surface area and pore volume was noted, as well as an increase of the concentration of surface functional groups. Samples of the composites were tested in processes of sorption of methyl orange and fluoride ions. It was established that adsorption capacity for methyl orange decreased, while that for fluoride ions significantly increased comparing to activated carbon.
© The Authors, published by EDP Sciences, 2021
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