A new cotton functionalized with iron(III) trimer-like metal framework as an effective strategy for the adsorption of triarylmethane dye: An insight into the dye adsorption processes

Abstract

Fe-BTC (BTC-H 3 : trimesic acid) metal framework (Fe-BTC MOF loading as high 38 wt %) supported by cellulose fiber is synthesized in aqueous media using a simple and green preparation method, described for the first time in this manuscript. This new strategy relies on the synergetic effect of the pure cellulose and MOFs frameworks resulting in hybrid nanofibers of MOFs@cellulose composite. A complete characterization of the composite material reveals its structural similarity to MIL-100(Fe), a Fe-BTC material. The Cotton@Fe-BTC composite potential use as an eco-friendly and low-cost adsorbent was evaluated for its adsorptive performance for the removal of dye belonging to the triarylmethane dye family (Malachite Green (MQ), Brilliant Green (BG), Pararosaniline (PR), Basic Fuchsine (BF), Crystal Violet (CV), Methyl Green (Met-G), Victoria Blue B (VB), Acid Fuchsin (AF) and Aniline Blue (AB)) in aqueous solution. The fast kinetics and high dye removal efficiencies (>90%) obtained in aqueous solutions. The structure of Cotton@Fe-BTC network, contributed to the remarkable adsorption properties towards a variety of triphenylmethanedye. The interparticle studies showed two main steps in the dye adsorption processes, with the exception of AF and BG. The equilibrium adsorption capacities q e (mg/g) follow the order: AF (3.64)<Met-G (3.70)<AB (4.87)<PR (5.52)<BF (5.76)< Met-G (7.22)<CV (9.63)<BG (16.34). However, going insight the adsorption mechanisms, it was remarkable the

Effective removal of malachite green from local dyeing wastewater using zinc-tungstate based materials

“…Environmental health pollution is getting worse in the 21st century because of population growth, urbanization, and increasing industrial and agricultural expansion [ 1 , 2 ]. Organic dyes are one of the most dangerous pollutants for both surface and groundwater because they are used so often in industries like food, textiles, ink, leather, paint, and pharmaceuticals [ 3 , 4 ]. These dyes give water bodies an unpleasant colour, which reduces photosynthetic activity and harms the entire ecosystem and aquatic life [ 5 , 6 ].…”