Zirconium-Based Metal-Organic UiO-66, UiO-66-NDC and MOF-801 Frameworks. Influence of the Linker Effect on the Hydrogen Sorption Efficiency
- Авторлар: Vetlitsyna-Novikova K.S.1, Butova V.V.1, Pankin I.A.1,2, Shapovalov V.V.1, Soldatov A.V.1
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Мекемелер:
- International Research Institute of Smart Materials, Southern Federal University
- Department of Chemistry and NIS Interdepartmental Center, University of Torino
- Шығарылым: Том 13, № 5 (2019)
- Беттер: 787-792
- Бөлім: Article
- URL: https://journals.rcsi.science/1027-4510/article/view/196439
- DOI: https://doi.org/10.1134/S1027451019050173
- ID: 196439
Дәйексөз келтіру
Аннотация
Metal-organic UiO-66, UiO-66-NDC, and MOF-801 frameworks (MOFs) are produced via the solvothermal synthesis technique. The frameworks are composed of Zr6O4(OH)4 clusters that are connected with appropriate linkers, as follows: UiO-66—terephthalic acid; UiO-66-NDC—1,4-naphthalenedicarboxilic acid; and MOF-801—fumaric acid. The single-phase composition of the samples is confirmed by X-ray powder diffraction. The identification of Zr6O4(OH)4 clusters in all the synthesized MOFs is established using X-ray adsorption spectroscopy. The specific surface areas of UiO-66, UiO-66-NDC, and MOF-801 are evaluated, and their hydrogen adsorption–desorption isotherms are measured at 77 K, as well. Comprehensive preliminary characterization of the samples, together with hydrogen-storage-capacity data, allows one to make the following conclusions: (i) at relatively high pressures, the highest hydrogen-storage capacity is found for UiO-66 with the largest specific surface area; (ii) at relatively low pressures, MOF-801 with the smallest pores possesses the optimal structure for hydrogen sorption; (iii) a large π-system of aromatic UiO-66-NDC rings yields effective hydrogen sorption at low pressures, which is retained in pores during desorption.
Негізгі сөздер
Авторлар туралы
K. Vetlitsyna-Novikova
International Research Institute of Smart Materials, Southern Federal University
Хат алмасуға жауапты Автор.
Email: kristinavetlitsyna@gmail.com
Ресей, Rostov-on-Don, 344090
V. Butova
International Research Institute of Smart Materials, Southern Federal University
Хат алмасуға жауапты Автор.
Email: butovav86@gmail.com
Ресей, Rostov-on-Don, 344090
I. Pankin
International Research Institute of Smart Materials, Southern Federal University; Department of Chemistry and NIS Interdepartmental Center, University of Torino
Email: butovav86@gmail.com
Ресей, Rostov-on-Don, 344090; Torino, I-10125
V. Shapovalov
International Research Institute of Smart Materials, Southern Federal University
Email: butovav86@gmail.com
Ресей, Rostov-on-Don, 344090
A. Soldatov
International Research Institute of Smart Materials, Southern Federal University
Email: butovav86@gmail.com
Ресей, Rostov-on-Don, 344090
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