Nanosized Titania for Removing Cr(VI) and As(III) from Aqueous Solutions

Ординарцев, Д. П.; Печищева, Н. В.; Валеева, А. А.; Zaitceva, P. V.; Korobitsyna, A. D.; Belozerova, A. A.; Sushnikova, A.A.; Petrova, S. A.; Shunyaev, K. Yu.; Rempel, А. А.

doi:10.1134/s0036024422110231

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…One of the effective methods for obtaining nanoparticles is high-energy milling, which makes it possible to control the size of the resulting particles, dope the material during milling, and use various media for synthesis [19]. The milling of titanium oxides Ti 2 O 3 [20,21], TiO 2 (rutile) [22,23] by means of high-energy ball milling leads to a decrease of the particle size only, the milling of ordered titanium monoxide TiO y leads to a decrease of long-range order parameter of monoclinic TiO y [24,25], and phase transitions in TiO 2 from anatase to the high-pressure phase TiO 2 (II) occurs during milling [26,27].…”

Section: Introductionmentioning

confidence: 99%

Influence of high energy milling on titanium oxide Ti3O5 crystal structure

Валеева¹,

Дорошева²,

Sushnikova³

2023

Nanosystems: Phys. Chem. Math.

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The titanium oxide (Ti 3 O 5 ) microcrystals were synthesized by using solid-phase sintering from a mixture of titanium Ti and titanium dioxide TiO 2 powders. Subsequently, Ti 3 O 5 nanocrystals were produced by using high-energy ball milling for 15 -480 minutes. A full-profile analysis of the X-ray diffraction spectra of milled Ti 3 O 5 powders showed that high-energy milling does not lead to disordering or changing of the structure and stoichiometry, the structure remains monoclinic (sp. gr. C2/m), and XRD reflections are broadened due to the small particle size and microdeformations. Experimental data show that increasing of the milling time leads to decreasing of the coherent scattering regions up to 26 nm, increasing of the powder volume fraction of the nanophase up to 81 %, and increasing of microdeformations value. The morphology and the surface area of milled nanopowders were examined by SEM, HRTEM and BET techniques. KEYWORDS high-energy ball milling, Ti 3 O 5 , XRD, BET, SEM, HRTEM ACKNOWLEDGEMENTS The work was carried out in accordance with the state assignment for the Institute of Solid State Chemistry of the Ural Branch of the Russian Academy of Science (No.

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Section: Introductionmentioning

confidence: 99%

Influence of high energy milling on titanium oxide Ti3O5 crystal structure

Валеева¹,

Дорошева²,

Sushnikova³

2023

Nanosystems: Phys. Chem. Math.

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“…An affordable way to modify titanium dioxide is high-energy ball milling. During high-energy milling, various processes can occur, including the formation of structural defects, phase transformations, morphology changes, and particle fragmentation [23].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic activity of titanium dioxide produced by high-energy milling

Kozlova¹,

Valeeva²,

Sushnikova³

et al. 2022

Nanosystems: Phys. Chem. Math.

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In this work, photocatalysts based on titanium dioxide were synthesized by high-energy ball milling of commercial titanium dioxide in the anatase modification. Using a complex of physicochemical methods, including XRD, low-temperature nitrogen adsorption, XPS and TEM, it was shown that the milling of commercial anatase leads to phase transformations and the formation of several phases of titanium dioxide, namely the high-pressure phase, the monoclinic phase of anatase and rutile, except for in addition, there is a change in the crystalline size and the value of the specific surface area grows from 8 to 31 m 2 /g. It was found that defects are introduced into the system during ball milling. The photocatalysts obtained by milling showed an activity comparable to the commercial standard TiO 2 Degussa P25 in the destruction of the methylene blue dye under the action of UV light, while the adsorption properties of the synthesized samples exceeded those of commercial P25. KEYWORDSTitanium dioxide, high-energy ball milling, photocatalytic oxidation ACKNOWLEDGEMENTS This work was supported by the Russian Science Foundation, project no. 21-73-20039. XPS and HRTEM investigations was performed using the facilities of the shared research center "National Center for the Investigation of Catalysts" at the Boreskov Institute of Catalysis. Authors thanks to I. D. Popov, A. A. Saraev, E. Yu. Gerasimov for DRS, XPS, and TEM experiments, respectively.

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Functional nanomaterials based on modified titanium dioxide

Rempel

2024

Russ Chem Bull

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Nanosized Titania for Removing Cr(VI) and As(III) from Aqueous Solutions

Cited by 11 publications

References 16 publications

Influence of high energy milling on titanium oxide Ti3O5 crystal structure

Influence of high energy milling on titanium oxide Ti3O5 crystal structure

Photocatalytic activity of titanium dioxide produced by high-energy milling

Functional nanomaterials based on modified titanium dioxide

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