Mechanochemical Synthesis of Composite Magnetic Materials on the Basis of Quartz-Containing Systems

Abstract

Mechanochemical treatment of quartz and its mixtures with ash-slag and iron oxides in the presence of various modifying organic additives was carried out. Quartz and mixtures based on it exhibit ferromagnetic properties and are distinguished by good sorption ability toward organic substances. Crystalline silica assumes the role of the matrix during development of structure and functional properties of the magnetic adsorbent. It was found, that the polymer film, which is used to cover the quartz particles, includes regions with embedded iron nanoparticles as well as other regions enriched with active carbon. The synthesized sorbents were used to collect petroleum spill over water; high water purification degree<br />(up to 98 %) was achieved.

SHS-Composition Ceramics Obtained with Participation of Modified Wollastonite

“…Mechanochemical treatment (MCT) of powder materials in mills-activators is an effective way of obtaining active components for SHS-charge systems with the designed properties. Varying the conditions of MCT and introducing different organic modifiers into the powder being treated one can obtain particles of composition structure consisting of inorganic and organic parts (inorganic nucleus encapsulated into an organic shell) [3]. Each of the component parts of the modified powder material plays its role in the subsequent process of SHsynthesis.…”