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• W4229334265 abstract "The present studies describe and discuss the application of the highly porous metal-organic framework (MOF-199) through its conversion into CuO nanoparticles. CuO nanoparticles produced from MOF-199, as well as their graphene templated counterpart ([CuO]@Gr), have been employed to improve the hydrogen sorption properties of the front-running hydride (MgH2). The MgH2-(CuO) and MgH2-(CuO)@Gr have been studied in terms of their hydrogen sorption properties. The onset desorption temperature for (CuO)@Gr catalyzed MgH2 has been found to be 229°C, which is 121°C and 12°C lower than MgH2 and MgH2-(CuO). The MgH2-(CuO) sample absorbs hydrogen of 5.02 wt% in 1 minute, and 5.22 wt% in 5 minutes and desorbs 1.48 wt% in 5 minutes, and 5.55 wt% in 20 min at 290°C. However, the MgH2-(CuO)@Gr sample absorbs hydrogen to the tune of 6.01 wt% in 1 minute and 6.22 wt% in 5 min and desorbs 2.32 wt% in 5 minutes and 6.01 wt% in 12 minutes at 290°C. The activation energy of (CuO)@Gr catalyzed MgH2 has been found to be 82.83 kJ/mol, which is lower by 77.23 kJ/mol from BM MgH2. The change in desorption enthalpy for MgH2-(CuO) sample has been found to be 75.18 kJ/mol and 68.34 kJ/mol for the MgH2-(CuO)@Gr sample, respectively. A remarkable impact of graphene addition is that the storage capacity hardly changes on cycling here and remains ~6 wt% even after 10 cycles without any substantial deterioration. Repeated cycling further leads to the formation of Cu nanoparticles and prevents agglomeration during cycling. On the basis of X-Ray diffraction, transmission/scanning electron microscopic, RAMAN spectroscopy investigations, and Fourier transmission infrared spectroscopy, a plausible catalytic mechanism resulting from MOF-199 derived (CuO)@Gr catalyst on MgH2 has been discussed." @default.
• W4229334265 created "2022-05-09" @default.
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• W4229334265 date "2022-05-07" @default.
• W4229334265 modified "2023-09-25" @default.
• W4229334265 title "Notable catalytic activity of <scp>CuO</scp> nanoparticles derived from <scp>metal‐organic</scp> frameworks for improving the hydrogen sorption properties of <scp> MgH ₂ </scp>" @default.
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• W4229334265 doi "https://doi.org/10.1002/er.8050" @default.
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