Chitin/Metal-Organic Framework Composites as Wide-Range Adsorbent. 2021

Gabriel I Tovar Jimenez, and Ainara Valverde, and Cristian Mendes-Felipe, and Stefan Wuttke, and Arkaitz Fidalgo-Marijuan, and Edurne S Larrea, and Luis Lezama, and Fangyuan Zheng, and Javier Reguera, and Senentxu Lanceros-Méndez, and María I Arriortua, and Guillermo Copello, and Roberto Fernández de Luis
Facultad de Farmacia y Bioquímica, Departamento de Química Analítica y Fisicoquímica, Universidad de Buenos Aires (UBA), Junín 956, C1113AAD, Buenos Aires, Argentina.

Composites based on chitin (CH) biopolymer and metal-organic framework (MOF) microporous nanoparticles have been developed as broad-scope pollutant absorbent. Detailed characterization of the CH/MOF composites revealed that the MOF nanoparticles interacted through electrostatic forces with the CH matrix, inducing compartmentalization of the CH macropores that led to an overall surface area increase in the composites. This created a micro-, meso-, and macroporous structure that efficiently retained pollutants with a broad spectrum of different chemical natures, charges, and sizes. The unique prospect of this approach is the combination of the chemical diversity of MOFs with the simple processability and biocompatibility of CH that opens application fields beyond water remediation.

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