Abstract
Halloysite/magnetite composite was synthesized by chemical coprecipitation. To evaluate the crystal structure, texture, surface morphology, and magnetization of the composite, electron microscopy, low-temperature nitrogen adsorption–desorption, X-ray diffraction analysis, and magnetic measurements were used. Granulometric analysis of the obtained materials showed that larger particles appear when halloysite is modified with magnetite. It was revealed that the studied samples of halloysite and composite belong to mesoporous bodies. An increase in the size of magnetite crystallites was found in the structure of magnetized clay. It is shown that samples of magnetized halloysite are characterized by higher values of the coercive force and lower values of the specific saturation magnetization compared to those found for magnetite.
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ACKNOWLEDGMENTS
Studies were carried out on the equipment of the Upper Volga Regional Center for Physical and Chemical Research Center for Collective Use.
Funding
This work was supported by the Russian Foundation for Basic Research, grant no. 18-43-370015-a.
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Alekseeva, O.V., Smirnova, D.N., Noskov, A.V. et al. Synthesis, Structure, and Properties of Halloysite/Magnetite Composite. Prot Met Phys Chem Surf 58, 275–281 (2022). https://doi.org/10.1134/S2070205122020022
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DOI: https://doi.org/10.1134/S2070205122020022