Method for producing nanocrystalline flakes of titanium dioxide in anatase phase

The laser ablation and oxidation process for titanium nitride nanoparticles in water at low temperature and pressure produces anatase-phase TiO2 nanoflakes with high surface area, addressing the limitations of existing methods by ensuring safety, efficiency, and scalability.

RU2865094C1Active Publication Date: 2026-06-30FEDERALNOE GOSUDARSTVENNOE AVTONOMNOE OBRAZOVATELNOE UCHREZHDENIE VYSSHEGO OBRAZOVANIYA MOSKOVSKIJ FIZIKO TEKHNICHESKIJ INST NATSIONALNYJ ISSLEDOVATELSKIJ UNIV
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Patent Information

Authority / Receiving Office
RU · RU
Patent Type
Patents
Current Assignee / Owner
FEDERALNOE GOSUDARSTVENNOE AVTONOMNOE OBRAZOVATELNOE UCHREZHDENIE VYSSHEGO OBRAZOVANIYA MOSKOVSKIJ FIZIKO TEKHNICHESKIJ INST NATSIONALNYJ ISSLEDOVATELSKIJ UNIV
Filing Date
2025-12-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Current methods for producing anatase-phase titanium dioxide nanomaterials face challenges such as the use of toxic fluorine-containing compounds, harsh hydrothermal conditions, and low specific surface area, limiting their catalytic activity and scalability.

Method used

A method involving laser ablation of titanium nitride nanoparticles in water followed by oxidation at 80-90°C at atmospheric pressure, eliminating the need for acids and structure-directing agents, results in highly dispersed nanocrystalline titanium dioxide flakes with controlled morphology and high specific surface area.

Benefits of technology

This method produces anatase-phase TiO2 nanoflakes efficiently and safely, with controlled morphology and high surface area, overcoming the limitations of previous methods by using mild conditions and avoiding toxic chemicals, and is scalable.

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Abstract

FIELD: nanomaterials.SUBSTANCE: invention relates to chemical technology, nanotechnology and materials science and can be used in the production of highly efficient photocatalysts, materials for photoelectrochemical cells, sensors and functional coatings. First, laser ablation of the primary material, titanium nitride TiN, is carried out in a liquid, which is distilled or deionized water, resulting in the formation of a suspension of spherical TiN nanoparticles. The resulting nanoparticles are oxidized by heating the said suspension at 80-90 °C for 2-6 hours. Then centrifugation is performed for 20 minutes at a frequency of 15,000 rpm.EFFECT: obtaining nanocrystalline titanium dioxide flakes with a controlled content of the anatase phase of up to 90% and higher at atmospheric pressure in a neutral aqueous environment without the use of acids and morphological controlling agents, and also reducing the oxidation temperature.2 cl, 3 dwg
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Citation Information

Patent Citations

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  • Method of producing photocatalytically active nanocrystalline titanium dioxide in anatase crystalline modification

    RU2724243C1

  • METHOD FOR OBTAINING PHOTOCATALYSTS ACTIVE IN THE VISIBLE RANGE OF THE SPECTRUM WITH NANOSCALE TITANIUM OXIDES WITH THE STRUCTURE OF ANATASE AND A MIXTURE OF ANATASE AND RUTILE DOPED WITH TRANSITION METALS (Ni, V, Ag, Cu, Mn)

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