Abstract:
Here, we study a performance of nanotubular Mg3Si2O5(OH)4/TiO2 hybrid adsorbent/photocatalyst in the process of decolorizing an aqueous solution of crystal violet. The composite material was produced by hydrothermal treatment with one or more subsequent cycles of TiCl4 treatment and vapor-phase hydrolysis according to the molecular layering technique. Decolorization was observed in situ by UV-VIS spectroscopy. It was found that TiO2 deposition yields 2 to 3 times improvement of decolorization performance. Depending on TiO2 phase type - amorphous or crystalline - this rise is related with either enhancement of adsorption rate either appearance of photocatalytic activity. Finally, fitting procedure issues in case of complex decolorization process were discussed.
The research was supported by Russian Science Foundation grant 17-73-10426.
The SEM research was performed using the equipment of the JRC PMR IGIC RAS. The XRPD study was performed
using the equipment of the Engineering Centre of Saint Petersburg State Technological Institute (Technical
University).
Received: 01.04.2018 Revised: 08.05.2018
Bibliographic databases:
Document Type:
Article
PACS:68.43.Mn, 82.65.+r
Language: English
Citation:
A. A. Krasilin, I. S. Bodalyov, A. A. Malkov, E. K. Khrapova, T. P. Maslennikova, A. A. Malygin, “On an adsorption/photocatalytic performance of nanotubular Mg3Si2O5(OH)4/TiO2 composite”, Nanosystems: Physics, Chemistry, Mathematics, 9:3 (2018), 410–416
This publication is cited in the following 8 articles:
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M. E. Kurguzkina, T. P. Maslennikova, V. V. Gusarov, “Formation, Morphology, and Size Parameters of Nanopowders Based on Mg3Si2O5(OH)4–Ni3Si2O5(OH)4 Nanoscrolls”, Inorg Mater, 59:10 (2023), 1075
E. K. Khrapova, D. A. Kozlov, A. A. Krasilin, “Hydrothermal Synthesis of Hydrosilicate Nanoscrolls (Mg1 – xCox)3Si2O5(OH)4 in a Na2SO3 Solution”, Russ. J. Inorg. Chem., 67:6 (2022), 839
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I.S. Bodalyov, A.A. Malkov, T.P. Maslennikova, A.A. Krasilin, A.A. Malygin, “Mechanism of formation of titanium dioxide crystallites in the reaction of titanium tetrachloride with magnesium hydrosilicate nanotubes”, Materials Today Chemistry, 11 (2019), 156
Andrei A. Krasilin, Dmitry P. Danilovich, Elena B. Yudina, Stéphanie Bruyere, Jaafar Ghanbaja, Vladimir K. Ivanov, “Crystal violet adsorption by oppositely twisted heat-treated halloysite and pecoraite nanoscrolls”, Applied Clay Science, 173 (2019), 1