Sulfonated Schiff base immobilized on magnetite-chitosan as an efficient nanocatalyst for the synthesis of xanthene derivatives.

ABSTRACT: The present study aims to develop and enhance a magnetic heterogeneous catalyst with a core-shell structure, Fe₃O₄@CS/SSB (Fe₃O₄@Chitosan-Salicylaldehyde-5-sulfonate), by immobilizing a chitosan-based Schiff base complex on the surface of magnetite. Chitosan, a low-cost, biodegradable, and biocompatible polymer with a suitable chemical structure such as the NH₂ functional group plays a significant role in heterogeneous catalytic systems. In this research, the Schiff base was synthesized through the condensation of a sulfonated aromatic aldehyde (salicylaldehyde) with the amine group of chitosan, forming a magnetic nanocatalyst with acidic properties. The catalyst was characterized using various analytical techniques, including XRD, FT-IR, VSM, TG

SUBMITTER: Taheri MA 

PROVIDER: S-EPMC12125304 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature