Polymers, Год журнала: 2024, Номер 16(24), С. 3538 - 3538

Опубликована: Дек. 19, 2024

This study reported a one-spot preparation of magnetic composite carbon (MCC@Fe) from microcrystalline cellulose (MC). The pure was impregnated in iron (III) chloride solution and carbonized at 650 °C. MCC@Fe adsorbent underwent various characterization techniques. XRD identified nanostructured Fe3O4 particles with an average crystallite size 34.3 nm embedded the core subunits material. FESEM images indicated rough irregular surface, some cavities along its incorporating nanoparticles, while EDS analysis confirmed presence elements like Fe, C, O. Notably, combining thermal chemical treatments produces more pores high specific surface area (500.0 m2 g−1) compared to MC (1.5 m2/g). VSM properties (0.76 emu/g), Hydrophobic Index (HI) showed that hydrophobic (HI 1.395). adsorption studies consisted kinetic, mass transfer, equilibrium, thermodynamics studies. Kinetic paracetamol on proved be rapid, time necessary for covering 95% (t0.95) lower than 27 min following fractal-like pseudo-first-order model (FPFO). Liu’s isotherm most appropriate understanding equilibrium. Remarkably, maximum sorption capacity (Qmax) 34.78 mg g−1 45 ΔH° value (+27.00 kJ/mol) negative ΔG° values were consistent physisorption mechanism favorable process. Furthermore, transfer is governed by intraparticle diffusion model, being rate-limiting step when considering Biot number greater 100. research displayed single-route production inexpensive nano adsorbents capable efficiently eliminating aqueous environments.

Язык: Английский