Application of TEMPO‐Oxidized Cellulose Nanofibrils/Lanthanide Hybrid Materials TOCN/Eu(III) as Luminescent Sensor

Abstract

AbstractThis study prepares lanthanide rare earth ion‐doped optical materials TOCN/Eu(III) based on the simple blending reaction of TEMPO‐oxidized cellulose nanofiber (TOCN) with trivalent lanthanide ions (Eu3+). The carboxyl groups on the surface of TOCN are adopted to generate solid ionic bonds with rare earth ions (Eu3+) so that TOCN/Eu(III) emits solid red light under UV irradiation. TOCN/Eu(III) composites are synthesized and proved to selectively detect Fe3+. This finding suggests that the cellulose‐based lanthanide hybrid material, TOCN/Eu(III), holds promising application potential as a fluorescent probe for the selective detection of Fe3+ ions.