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Catalysts 2019, 9(4), 309; https://doi.org/10.3390/catal9040309

The Impact of Synthesis Method on the Properties and CO2 Sorption Capacity of UiO-66(Ce)

1
Division of Chemistry and Technology of Fuels, Wroclaw University of Technology, Gdanska 7/9, 50-344 Wroclaw, Poland
2
Department of Chemistry, Wroclaw University of Environmental and Life Sciences, 50-375 Wrocław, Poland
3
Laboratorio de Materiales Avanzados, Departamento de Quimica Inorganica, Universidad de Alicante, Ctra. San Vicente-Alicante s/n, E-03690 Alicante, Spain
4
Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland
5
Centre of Polymer and Carbon Materials, Polish Academy of Sciences, M. Curie-Sklodowskiej 34, 41-819 Zabrze, Poland
*
Author to whom correspondence should be addressed.
Received: 28 February 2019 / Revised: 24 March 2019 / Accepted: 26 March 2019 / Published: 29 March 2019
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Abstract

A series of cerium-based UiO-66 was obtained via hydrothermal and sonochemical methods, using the same quantities of reagents (cerium ammonium nitrate (CAN), terephthalic acid (H2BDC)) and solvents) in each synthesis. The impact of synthesis method and metal to linker ratio on the structural and textural properties of obtained UiO-66(Ce), as well as their composition in terms of Ce4+/Ce3+ ratio, structure defects resulting from missing linker, and CO2 adsorption capacity was discussed. By using typical characterization techniques and methods, such as XRD, N2 and CO2 sorption, TGA, XPS, and SEM, it was shown that the agitation of reacting mixture during synthesis (caused by stirring or ultrasounds) allows to obtain structures that have more developed surfaces and fewer linker defects than when MOF was obtained in static conditions. The specific surface area was found to be of minor importance in the context of CO2 adsorption than the contribution of Ce3+ ions that were associated with the concentration of linker defects. View Full-Text
Keywords: UiO-66; cerium; CO2 sorption; sonochemical synthesis UiO-66; cerium; CO2 sorption; sonochemical synthesis
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Stawowy, M.; Róziewicz, M.; Szczepańska, E.; Silvestre-Albero, J.; Zawadzki, M.; Musioł, M.; Łuzny, R.; Kaczmarczyk, J.; Trawczyński, J.; Łamacz, A. The Impact of Synthesis Method on the Properties and CO2 Sorption Capacity of UiO-66(Ce). Catalysts 2019, 9, 309.

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