Titanium(IV) Oxoacrylate Complexes with Polypyridine Ligands as Precursors of Nanomaterials with Antiwear Properties
G. I. Dzhardimalievaa, b, I. E. Uflyandc, V. A. Zhinzhiloc, *, E. G. Drogand, V. E. Burlakovad, and V. A. Irkhae
aFederal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, Chernogolovka, 142432 Russia
bMoscow Aviation Institute (National Research University), Moscow, 125993 Russia
cSouthern Federal University, Rostov-on-Don, 344090 Russia
dDon State Technical University, Rostov-on-Don, 344000 Russia
eK.G. Razumovsky Moscow State University of Technology and Management (First Cossack University), Moscow, 109004 Russia
email: *zhinzhilo@sfedu.ru
Received 26 May, 2022
Abstract—
Complexes of titanium(IV) oxoacrylates with polypyridine ligands 2,2′-bipyridine, 1,10-phenanthroline, and 4′-phenyl-2,2′:6′,2′′-terpyridine, were synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetry, and differential scanning calorimetry. The thermolysis of these complexes at 600°C yielded nanosized titanium oxides, which were studied by X-ray diffraction analysis, scanning electron microscopy, high-resolution transmission electron microscopy, and atomic force microscopy. The average size of spherical or oval crystallites of the obtained titanium oxide nanoparticles is 2.71–5.58 nm. The resulting compounds were tested as antiwear additives for lubricating oils. The optimal concentrations of nanoparticles ensuring the best antiwear properties of the lubricant were determined.
Keywords:
oxoacrylates,
polypyridine ligands,
thermolysis,
nanoparticles,
lubricant additives
DOI: 10.1134/S1070363222100127