@article {48666,
	title = {Composites of HKUST-1@nanocellulose for gas-separation and dye-sorption applications},
	journal = {CHEMISTRY-A EUROPEAN JOURNAL},
	volume = {29},
	year = {2023},
	month = {JUN},
	type = {Article},
	abstract = {<p>
	In this study, composites of HKUST-1 MOF with nanocellulose, HKUST-1@NCs, have been prepared and explored for CO2/N-2 gas-separation and dye-sorption based applications. Our biopolymer-MOF composites are prepared via a copper ion pre-seeding method, in which, the HKUST-1 crystallites are grown in situ on the Cu-seeded and carboxylate anchored NC fibers for a better interfacial integration between the MOF and the polymer matrices. Static gas sorption studies show the capability of one of our HKUST-1@NC composites to reach similar to 300 \% enhancement in the CO2/N-2 sorption selectivity compared to the corresponding MOF alone - blank reference sample prepared at similar conditions. The same composite, C100, in the bulk powder form, shows a remarkable IAST sorption selectivity of 298 (CO2/N-2) at 298 K and 1 bar for the CO2/N-2 (15/85, v/v) gas mixture. The relative position of the C100, in the bound plot visualizations of the CO2/N-2 separation trade-off factors indicate a significant potential. The HKUST-1@NC composites have also been processed along with a polymeric cellulose acetate (CA) matrix as HKUST-1@NC@CA films to study them as free-standing mixed-matrix membranes. The CO2/N-2 sorption selectivity, at 298 K and 1 bar is 600 for one such membrane, C-120@CA, as bulk sample studied by the static gas sorption. The composite, C120, exhibits a good uptake with an enhancement of 11 \% for alizarin and 70 \% for Congo red in comparison to the uptakes of the corresponding blank reference HKUST-1 sample, B120.</p>
},
	keywords = {CO2 separation, dye sorption, MOFs, nanocellulose composites, sustainable polymers},
	issn = {0947-6539},
	doi = {10.1002/chem.202300674},
	author = {Muhamed, Shamna and Sunny, Blesson and Kunjattu, Shebeeb H. and Alagarsamy, Thirumurugan}
}
