Microwave Synthesis, Properties and Analytical Possibilities of Magnetite-Based Nanoscale Sorption Materials

作者：Kubrakova I V^*; Koshcheeva I Ya; Pryazhnikov D V; Martynov L Yu; Kiseleva M S; Tyutyunnik O A

来源：Journal of Analytical Chemistry, 2014, 69(4): 336-346.

DOI：10.1134/S1061934814020087

• magnetic sorption materials
• microwave synthesis and modification
• nanomagnetite
• sorption properties
• natural waters
• trace components

An approach is proposed to the preparation of magnetic sorption materials based on the synthesis and surface modification of nanomagnetite by organic compounds under microwave heating. The optimum conditions for the preparation of nanomagnetite are found, its structure and particle sizes are studied. Data on the stabilization and modification of the prepared particles by surfactants are obtained. The magnetic materials modified by oleic and mercaptopropionic acids and also by cetyltrimethylammonium bromide are synthesized and thoroughly characterized. Conditions of the formation of a modifying layer are studied and its stability is estimated. Sedimentation properties of the modified adsorbents are studied. The sorption capacity and kinetic properties of the modified nanomagnetite for a number of inorganic and organic natural water pollutants (cadmium, lead, copper, phenol, and toluene) are determined. The possibility of the efficient extraction of heavy metals in the presence of macrocomponents of natural waters is shown and data on the possibility of their desorption are obtained.

• 出版日期2014-4