Stabilization of titanium dioxide nanoparticles by methylcellulose

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Abstract

In this work, titanium dioxide nanoparticles stabilized with methylcellulose were synthesized by chemical precipitation in an aqueous medium. Titanium tetraisopropylate was used as a precursor, and an aqueous solution of ammonia was used as a precipitator. When examining the microstructure of the obtained samples surface, it was found that titanium dioxide nanoparticles stabilized with methylcellulose form spherical particles with a diameter from 70 to 100 nm, from which further conglomerates are formed, also spherical, with a diameter of up to 2 microns. A study of phase composition showed that the sample has an amorphous structure with a tetragonal crystal lattice. The study of the phase composition showed that the sample consists of three phases with different types of crystal lattices. To determine the optimal type of interaction of titanium dioxide particles with methylcellulose, computer quantum chemical modeling was performed. It was found that the process of stabilization of titanium dioxide nanoparticles by methylcellulose is energetically beneficial and interaction occurs through a hydroxyl group. The samples were studied by Fourier transform infrared spectroscopy to confirm the modelling results. The analysis of the results revealed that interaction of titanium dioxide nanoparticles occurs with the charged group OH–.

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About the authors

A. A. Nagdalyan

North-Caucasus Federal University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0002-6782-2821

Cand. of Sci. (Tech), Docent

Russian Federation, Stavropol

A. B. Golik

North-Caucasus Federal University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0003-2580-9474

Assistant

Russian Federation, Stavropol

M. A. Pirogov

North-Caucasus Federal University

Author for correspondence.
Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0001-9217-6262

Laboratory assistant

Russian Federation, Stavropol

E. D. Nazaretova

North-Caucasus Federal University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0002-1850-8043

Laboratory assistant

Russian Federation, Stavropol

M. N. Verevkina

Stavropolsky State Agrarian University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0002-9928-8379

Cand. of Sci. (Biology)

Russian Federation, Stavropol

A. N. Simonov

Stavropolsky State Agrarian University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0000-0001-8022-0692

Cand. of Sci. (Biology)

Russian Federation, Stavropol

A. V. Tatov

North-Caucasus Federal University

Email: pirogov.m.2002@gmail.com
ORCID iD: 0009-0003-8842-232X

Laboratory assistant

Russian Federation, Stavropol

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Supplementary files

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2. Fig.1. SEM micrographs of a sample of nanoscale titanium dioxide stabilized with methylcellulose

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3. Fig.2. X-ray diffraction pattern of a sample of titanium dioxide stabilized by methylcellulose

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4. Fig.3. Simulation results of the interaction of a methylcellulose molecule and titanium oxide through a hydroxyl group attached to the C6 residue of glucopyranose: a – model of the molecular complex; b – electron density distribution; c – electron density distribution gradient; d – higher populated molecular orbital (HOMO); e – lower free molecular orbital (LUMO)

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5. Fig.4. Simulation results of the interaction of a methylcellulose molecule and titanium oxide through a hydroxyl group attached to the C3 residue of glucopyranose: a – model of the molecular complex; b – electron density distribution; c – electron density distribution gradient; d – higher populated molecular orbital (HOMO); e – lower free molecular orbital (LUMO)

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6. Fig.5. Simulation results of the interaction of a methylcellulose molecule and titanium oxide through a hydroxyl group attached to the C2 residue of glucopyranose: a – model of the molecular complex; b – electron density distribution; c – electron density distribution gradient; d – higher populated molecular orbital (HOMO); e – lower free molecular orbital (LUMO)

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7. Fig.6. IR spectrum of titanium dioxide nanoparticles stabilized with methylcellulose: a – IR spectrum of methylcellulose; b – IR spectrum of titanium dioxide nanoparticles stabilized with MC; c – IR spectrum of titanium dioxide

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Copyright (c) 2025 Nagdalyan A.A., Golik A.B., Pirogov M.A., Nazaretova E.D., Verevkina M.N., Simonov A.N., Tatov A.V.