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ACS Omega, volume 5, issue 8, pages 4115-4124

Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment

Demina P A 1, 2
Voronin Denis 2, 3
Abramova Anna M 2
Nabatov Boris V. 1
Shchukin Dmitry 3, 4
Publication typeJournal Article
Publication date2020-02-19
Journal: ACS Omega
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor4.1
ISSN24701343
General Chemistry
General Chemical Engineering
Abstract
The photocatalytic degradation of organic molecules is one of the effective ways for water purification. At this point, photocatalytic microreactor systems seem to be promising to enhance the versatility of the photoassisted degradation approach. Herein, we propose photoresponsive microcapsules prepared via layer-by-layer assembly of polyelectrolytes on the novel CaCO3/TiO2 composite template cores. The preparation of CaCO3/TiO2 composite particles is challenging because of the poor compatibility of TiO2 and CaCO3 in an aqueous medium. To prepare stable CaCO3/TiO2 composites, TiO2 nanoparticles were loaded into mesoporous CaCO3 microparticles with a freezing-induced loading technique. The inclusion of TiO2 nanoparticles into CaCO3 templates was evaluated with scanning electron microscopy and elemental analysis with respect to their type, concentration, and number of loading iterations. Upon polyelectrolyte shell assembly, the CaCO3 matrix was dissolved, resulting in microreactor capsules loaded with TiO2 nanoparticles. The photoresponsive properties of the resulted capsules were tested by photoinduced degradation of the low-molecule dye rhodamine B in aqueous solution and fluorescently labeled polymer molecules absorbed on the capsule surface under UV light. The exposure of the capsules to UV light resulted in a pronounced degradation of rhodamine B in capsule microvolume and fluorescent molecules on the capsule surface. Finally, the versatility of preparation of multifunctional photocatalytic and magnetically responsive capsules was demonstrated by iterative freezing-induced loading of TiO2 and magnetite Fe3O4 nanoparticles into CaCO3 templates.

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Demina P. A. et al. Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment // ACS Omega. 2020. Vol. 5. No. 8. pp. 4115-4124.
GOST all authors (up to 50) Copy
Demina P. A., Voronin D., Lengert E. V., Abramova A. M., Atkin V. S., Nabatov B. V., Semenov A., Shchukin D., Bukreeva T. V. Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment // ACS Omega. 2020. Vol. 5. No. 8. pp. 4115-4124.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1021/acsomega.9b03819
UR - https://doi.org/10.1021%2Facsomega.9b03819
TI - Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment
T2 - ACS Omega
AU - Abramova, Anna M
AU - Nabatov, Boris V.
AU - Bukreeva, Tatiana V
AU - Demina, P A
AU - Voronin, Denis
AU - Lengert, Ekaterina V.
AU - Shchukin, Dmitry
AU - Atkin, Vsevolod S
AU - Semenov, Anton
PY - 2020
DA - 2020/02/19 00:00:00
PB - American Chemical Society (ACS)
SP - 4115-4124
IS - 8
VL - 5
PMID - 32149240
SN - 2470-1343
ER -
BibTex |
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@article{2020_Demina
author = {Anna M Abramova and Boris V. Nabatov and Tatiana V Bukreeva and P A Demina and Denis Voronin and Ekaterina V. Lengert and Dmitry Shchukin and Vsevolod S Atkin and Anton Semenov},
title = {Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment},
journal = {ACS Omega},
year = {2020},
volume = {5},
publisher = {American Chemical Society (ACS)},
month = {feb},
url = {https://doi.org/10.1021%2Facsomega.9b03819},
number = {8},
pages = {4115--4124},
doi = {10.1021/acsomega.9b03819}
}
MLA
Cite this
MLA Copy
Demina, P. A., et al. “Freezing-Induced Loading of TiO2 into Porous Vaterite Microparticles: Preparation of CaCO3/TiO2 Composites as Templates To Assemble UV-Responsive Microcapsules for Wastewater Treatment.” ACS Omega, vol. 5, no. 8, Feb. 2020, pp. 4115-4124. https://doi.org/10.1021%2Facsomega.9b03819.
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