najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2018-9-3-410-416najo-816Research ArticleCHEMISTRY AND MATERIAL SCIENCEХИМИЯ И МАТЕРИАЛОВЕДЕНИЕOn an adsorption/photocatalytic performance of nanotubular Mg3Si2O5(OH)4/TiO2 compositeKrasilinA. A.

31 Leninsky prospect, Moscow 119991

26 Politekhnicheskaya street, St. Petersburg, 194021

ikrasilin@gmail.comBodalyovI. S.

26 Moskovskiy Prospekt, St. Petersburg 190013

MalkovA. A.

26 Moskovskiy Prospekt, St. Petersburg 190013

KhrapovaE. K.

26 Politekhnicheskaya street, St. Petersburg, 194021

MaslennikovaT. P.

2 Naberezhnaya Admirala Makarova, St. Petersburg 199034

MalyginA. A.

26 Moskovskiy Prospekt, St. Petersburg 190013

Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences; Ioffe InstituteRussian FederationSaint-Petersburg State Institute of TechnologyRussian FederationIoffe InstituteRussian FederationInstitute of Silicate Chemistry, Russian Academy of SciencesRussian Federation20181408202593410416Copyright © Krasilin A.A., Bodalyov I.S., Malkov A.A., Khrapova E.K., Maslennikova T.P., Malygin A.A., 20252025Krasilin A.A., Bodalyov I.S., Malkov A.A., Khrapova E.K., Maslennikova T.P., Malygin A.A.Krasilin A.A., Bodalyov I.S., Malkov A.A., Khrapova E.K., Maslennikova T.P., Malygin A.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/816

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.

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The authors declare that there are no conflicts of interest present.