Sustainable nanocellulose recovery from newspaper waste to fabricate a composite for sensing and scavenging copper and iron in aqueous effluents and mining wastes
Nuha Y. Elamin , Mohamed R. Elamin , Laila S. Alqarni , Rana O. Yahya , Ahmed Shahat , Reda F.M. Elshaarawy
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引用次数: 0
Abstract
This study offers a straightforward and economical method for recovering cellulose nanoparticles (CNMs) from post-consumer newspaper trash in a sustainable manner. The recovered CNMs were subsequently utilized to fabricate a novel solid-state visual composite by immobilizing a newly synthesized fluorescent Schiff base ligand, (saldach(Et3N+PF6−)2, H2L) (Saldach ligand). Both the quick and on-site visual identification of Cu2+ and Fe3+ ions in aqueous solutions and the effective elimination of these heavy metal pollutants from mining effluent were proved by the resultant Saldach-composite. The Schiff base ligand, characterized by FTIR, NMR, and ESI-MS, exhibited selective binding toward Cu2+ and Fe3+ ions, leading to quantifiable UV–Vis spectroscopy. The morphology and composition of the CNMs and the Saldach-composite were investigated using SEM, TEM, DLS, XRD, and XPS analysis, confirming the successful incorporation of the Schiff base onto the CNM matrix. Additionally, the binding mechanism between the Saldach-composite and the target metal ions was clarified by the use of density functional theory (DFT) calculations. For the simultaneous detection and removal of Cu2+ and Fe3+ from mine waste, the developed solid-state visual composite presents a viable, economical, and ecologically friendly alternative, especially addressing the difficulties related to mining waste management.
期刊介绍:
Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers.
Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.