Surface modification of elongated one-dimensional titanium dioxide structures with ferromagnetic nanoparticles

• Published in: Inorganic materials Vol. 52; no. 11; pp. 1160 - 1165
• Main Authors: Zima, T. M., Prosanov, I. Yu
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2016; Springer Nature B.V
• Subjects: Chemical synthesis; Chemistry; Chemistry and Materials Science; Chitosan; Dimensional stability; Electron microscopy; Elongated structure; Ferromagnetic materials; Ferromagnetism; Heat treatment; Hydrothermal treatment; Industrial Chemistry/Chemical Engineering; Infrared spectroscopy; Inorganic Chemistry; Magnetic measurement; Materials Science; Microscopy; Morphology; Nanoparticles; Nanostructure; Nanostructured materials; Natural polymers; Thermal stability; Titanium dioxide; Transmission electron microscopy; hydrothermal treatment; ferromagnetic properties; one-dimensional structures; nanostructured TiO
• ISSN: 0020-1685; 1608-3172
• DOI: 10.1134/S0020168516100198

Nanostructured TiO
2
in the form of elongated one-dimensional structures having a highly ordered layered morphology, with cobalt-containing agglomerates on their surface, has been prepared by hydrothermal treatment of CoTiO
3
powder in the presence of chitosan, a bioactive natural polymer. The synthesis products have been characterized by scanning electron microscopy, transmission electron microscopy, IR spectroscopy, X-ray diffraction, elemental analysis, and magnetic measurements. The structures have been shown to be up to several microns in length, and their typical width ranges from 100 to 400 nm. The one-dimensional structures retain high thermal stability at calcination temperatures of up to 800°C. After vacuum heat treatment at 600°C and above, the nanostructured material possesses anomalously high ferromagnetic characteristics.