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NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties
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-hydroxyme...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180438/ https://www.ncbi.nlm.nih.gov/pubmed/37175325 http://dx.doi.org/10.3390/molecules28093916 |
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author | Timofeev, Konstantin L. Kulinich, Sergei A. Kharlamova, Tamara S. |
author_facet | Timofeev, Konstantin L. Kulinich, Sergei A. Kharlamova, Tamara S. |
author_sort | Timofeev, Konstantin L. |
collection | PubMed |
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 NH(2) 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 CH(3)COOH adsorption, and electrokinetic properties were studied by electrophoretic light scattering. UiO-66-NH(2) 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-NH(2) 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. |
format | Online Article Text |
id | pubmed-10180438 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-101804382023-05-13 NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties Timofeev, Konstantin L. Kulinich, Sergei A. Kharlamova, Tamara S. Molecules Article 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 NH(2) 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 CH(3)COOH adsorption, and electrokinetic properties were studied by electrophoretic light scattering. UiO-66-NH(2) 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-NH(2) 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. MDPI 2023-05-05 /pmc/articles/PMC10180438/ /pubmed/37175325 http://dx.doi.org/10.3390/molecules28093916 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Timofeev, Konstantin L. Kulinich, Sergei A. Kharlamova, Tamara S. NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title | NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title_full | NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title_fullStr | NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title_full_unstemmed | NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title_short | NH(2)-Modified UiO-66: Structural Characteristics and Functional Properties |
title_sort | nh(2)-modified uio-66: structural characteristics and functional properties |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180438/ https://www.ncbi.nlm.nih.gov/pubmed/37175325 http://dx.doi.org/10.3390/molecules28093916 |
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