20.500.12556/DKUM-87353-22d3c844-bd5d-1f9b-c7d9-aa0553748d45 Cellulose nanofibrils-reinforced pectin membranes for the adsorption of cationic dyes from a model solution In the presented research, a facile, one-step method for the fabrication of cellulose nanofibrils/pectin (CNFs/PC) membranes is described, which were tested further for their ability to remove cationic dyes from the prepared model solutions. For this purpose, ten membranes were prepared with different quantities of CNFs and PC with/without citric acid (CA) or CaCl2 as mediated crosslinking agents, and they were characterised comprehensively in terms of their physical, chemical, and hydrophilic properties. All the prepared CNFs/PC membranes were hydrophilic with a Water Contact Angle (WCA) from 51.23◦ (without crosslinker) up to 78.30◦ (CaCl2 ) and swelling of up to 485% (without crosslinker), up to 437% (CaCl2 ) and up to 270% (CA). The stability of membranes was decreased with the increase in PC; thus, only four membranes (M1, M2, M3 and M5) were stable enough in water after 24 h, and these were additionally applied in the adsorption trials, using two structurally different cationic dyes, i.e., C.I. Basic Yellow 28 (BY28) and C.I. Basic Blue 22 (BB22), in four concentrations. The highest total surface charge of M3 (2.83 mmol/g) as compared to the other membranes influenced the maximal removal efficiency of both dyes, up to 37% (BY28) and up to 71% (BB22), depending on the initial dye concentration. The final characteristics of the membranes and, consequently, the dye’s absorption ability could be tuned easily by changing the ratio between the CNFs and PC, as well as the type and amount of crosslinker. cellulose nanofibrils pectin cationic dyes adsorption dye removal celulozni nanofibrili pektin membrane kationska barvila adsorpcija odstranjevanje barvil true false true MDPI Angleški jezik Slovenski jezik https://www.mdpi.com/journal/polymers © 2024 by the authors. Članek v reviji 2024-03-12 11:09:19 2024-03-12 11:09:20 2025-07-22 12:38:06 0000-00-00 00:00:00 2024 0 0 13 str. št. 6, št. članka 724 let. 16 March 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2024-01-17 2024-03-05 2024-03-07 677.017:544.725/.726 188367363 10.3390/polym16060724 2073-4360 polymers-16-00724-v2.pdf polymers-16-00724-v2.pdf 1 34CC64E85CD9C8A2453A7B313D819A14 1b5e626e41cb0357367c1f9cbe1e489f3d86c874ea4bed014725dfb53f931649 a8cfc655-e058-11ee-97ea-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176799 https://www.mdpi.com/2073-4360/16/6/724 0 27e844a5-e059-11ee-97ea-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=176800 Fakulteta za strojništvo 0 0 0