NH2-modified UiO-66: Structural characteristics and functional properties

doi:10.3390/molecules28093916

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DOI Доступ к ресурсу на сайте издателя			10.3390/molecules28093916

#металлоорганические каркасы

#UiO-66

#металл-органические координационные полимеры

#пористые материалы

Title: NH2-modified UiO-66: Structural characteristics and functional properties
Creator: Timofeev, Konstantin L.
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Kulinich, Sergei A.
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Kharlamova, Tamara S.
Date: 2023
DOI: 10.3390/molecules28093916
Description: The development of new functional materials based on metal–organic frameworks (MOFs) for adsorption and catalytic applications is one of the promising trends of modern materials science. The Zr-based MOFs, specifically UiO-66, are considered as the supports for metallic catalysts for the 5-hydroxymethylfurfural platform molecule reduction into valuable products. The present work focused on the effect of NH2 modification of UiO-66 on its structure and functional properties. The samples were prepared by a solvothermal method. The structure of the obtained materials was studied by X-ray diffraction, IR spectroscopy, UV–visible spectroscopy, and low-temperature nitrogen adsorption. Basic properties were investigated by HCl and CH3COOH adsorption, and electrokinetic properties were studied by electrophoretic light scattering. UiO-66-NH2 samples with different contents of aminoterephthalate linkers were successfully prepared. A gradual decrease in the specific surface area and the fraction of micropores with a diameter of ~0.9 nm was observed with an increase in the aminoterephthalate content. A proportional increase in the total number of basic sites in UiO-66-NH2 samples was established with an increase in the aminoterephthalate content up to 75%. At the same time, a noticeable decrease in the total number of basic sites and an increase in their strength with higher aminoterephthalate content was observed.

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collection(s): Химический факультет
Identifier: смотреть в электронном каталоге НБ ТГУ
Type: статьи в журналах
Source: Molecules. 2023. Vol. 28, № 9. P. 3916 (1-12)
Language: eng

Created: 16-01-2024

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Химический факультет NH2-modified UiO-66: Structural characteristics and functional properties