Mechanical activation of anatase as a way to improve hexavalent chromium removal from solutions by the photoreduction and adsorption under near visible LED irradiation

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Mechanical activation of anatase as a way to improve hexavalent chromium removal from solutions by the photoreduction and adsorption under near visible LED irradiation. / Pechishcheva, N. V.; Burdina, L. G.; Kel', P. V. et al.
In: Materials Chemistry and Physics, Vol. 314, 128872, 02.2024.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{0ef6ffd95aeb491cae5d0fabca31adee,

title = "Mechanical activation of anatase as a way to improve hexavalent chromium removal from solutions by the photoreduction and adsorption under near visible LED irradiation",

abstract = "Bifunctional as a photocatalyst and a sorbent material was obtained by easily accessible mechanical activation of commercially available anatase powder. The resulting powders were characterized by SEM, HRTEM, Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ESR. The material made it possible to eliminate completely both chromium (VI) and total chromium from its 10 mg/L aqueous solutions under the illumination with 400 nm LED for 15–60 min, depending on the dose. It is shown that the mechanical activation by the selected mode, in contrast to some literature data, improves both the adsorption and photocatalytic properties of TiO2. Cr(VI) photoreduction rate constant increased by 8 times. There is also a change in its physicochemical properties: a 5-fold reduction in the average crystallites size, a 3.7-fold increase in the specific surface area, a change in the phase composition, and a rise of a visible light absorbance.",

author = "Pechishcheva, {N. V.} and Burdina, {L. G.} and Kel', {P. V.} and Estemirova, {S. Kh.} and Konysheva, {E. Yu.} and Sushnikova, {A. A.}",

note = "This work was performed on equipment of the «Ural-M» and «Geoanalyst» Common Use Centers of the Ural Branch of RAS and National Center for Catalyst Research of Boreskov Institute of Catalysis of the Siberian Branch of RAS. The authors thank V.M. Bulatov for his assistance in determining the morphology of titania powders and A.N. Tsmokalyuk (Ural Federal University) for ESR analysis. This work was supported by the Russian Science Foundation, project no. 21-73-20039.",

year = "2024",

month = feb,

doi = "10.1016/j.matchemphys.2023.128872",

language = "English",

volume = "314",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Mechanical activation of anatase as a way to improve hexavalent chromium removal from solutions by the photoreduction and adsorption under near visible LED irradiation

AU - Pechishcheva, N. V.

AU - Burdina, L. G.

AU - Kel', P. V.

AU - Estemirova, S. Kh.

AU - Konysheva, E. Yu.

AU - Sushnikova, A. A.

N1 - This work was performed on equipment of the «Ural-M» and «Geoanalyst» Common Use Centers of the Ural Branch of RAS and National Center for Catalyst Research of Boreskov Institute of Catalysis of the Siberian Branch of RAS. The authors thank V.M. Bulatov for his assistance in determining the morphology of titania powders and A.N. Tsmokalyuk (Ural Federal University) for ESR analysis. This work was supported by the Russian Science Foundation, project no. 21-73-20039.

PY - 2024/2

Y1 - 2024/2

N2 - Bifunctional as a photocatalyst and a sorbent material was obtained by easily accessible mechanical activation of commercially available anatase powder. The resulting powders were characterized by SEM, HRTEM, Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ESR. The material made it possible to eliminate completely both chromium (VI) and total chromium from its 10 mg/L aqueous solutions under the illumination with 400 nm LED for 15–60 min, depending on the dose. It is shown that the mechanical activation by the selected mode, in contrast to some literature data, improves both the adsorption and photocatalytic properties of TiO2. Cr(VI) photoreduction rate constant increased by 8 times. There is also a change in its physicochemical properties: a 5-fold reduction in the average crystallites size, a 3.7-fold increase in the specific surface area, a change in the phase composition, and a rise of a visible light absorbance.

AB - Bifunctional as a photocatalyst and a sorbent material was obtained by easily accessible mechanical activation of commercially available anatase powder. The resulting powders were characterized by SEM, HRTEM, Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ESR. The material made it possible to eliminate completely both chromium (VI) and total chromium from its 10 mg/L aqueous solutions under the illumination with 400 nm LED for 15–60 min, depending on the dose. It is shown that the mechanical activation by the selected mode, in contrast to some literature data, improves both the adsorption and photocatalytic properties of TiO2. Cr(VI) photoreduction rate constant increased by 8 times. There is also a change in its physicochemical properties: a 5-fold reduction in the average crystallites size, a 3.7-fold increase in the specific surface area, a change in the phase composition, and a rise of a visible light absorbance.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85181820515

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=001153735100001

U2 - 10.1016/j.matchemphys.2023.128872

DO - 10.1016/j.matchemphys.2023.128872

M3 - Article

VL - 314

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

M1 - 128872

ER -

ID: 51599866