Sustainable aerogels based on biobased poly (itaconic acid) for adsorption of cationic dyes

0582151 - ÚMCH 2025 RIV NL eng J - Journal Article
Huerta-Ángeles, Gloria - Kanizsová, Lívia - Mielczarek, K. - Konefal, Magdalena - Konefal, Rafal - Hodan, Jiří - Kočková, Olga - Bednarz, S. - Beneš, Hynek
Sustainable aerogels based on biobased poly (itaconic acid) for adsorption of cationic dyes.
International Journal of Biological Macromolecules. Roč. 259, Part 1 (2024), č. článku 129727. ISSN 0141-8130. E-ISSN 1879-0003
R&D Projects: GA ČR(CZ) GF21-07004K
Institutional support: RVO:61389013
Keywords : polyitaconic acid * composites * cationic dye
OECD category: Polymer science
Impact factor: 8.2, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0141813024005300?via%3Dihub

This work reports the synthesis of poly (itaconic acid) by thermal polymerization mediated by 2,2′-Azobis(2-methylpropionamidine) dihydrochloride. Furthermore, physical hydrogels were prepared by using high molecular weight poly (itaconic acid) characterized by low dispersity and laponite RD. The hydrogels presented porous 3D network structures, with a high-water penetration of almost 2000 g/g of swelling ratio, which can allow the adsorption sites of both poly (itaconic acid) and laponite RD to be easily exposed and facilitate the adsorption of dyes. The water adsorption followed Schott's pseudo-second-order model. The mechanism of the adsorption process was investigated using 1H and 31P NMR. The hydrogel is able to fast adsorb by a combination of electrostatic interactions and hydrogen bonding by the synergic effect of the clay and poly (itaconic acid). Moreover, the prepared aerogels exhibited a fast removal of Basic Fuchsin, with an adsorption capacity of 67.56 mg/g and a high removal efficiency (~99 %). The adsorption followed the pseudo-second-order kinetic model and Langmuir isotherm model. Furthermore, the thermodynamic parameters showed that the BF process of adsorption was spontaneous and feasible, endothermic, and followed physisorption. These results indicated that the PIA/laponite-based aerogel can be considered a promising adsorbent material in textile wastewater treatment.
Permanent Link: https://hdl.handle.net/11104/0350679