Arabic Gum-Grafted-Hydrolyzed Polyacrylonitrile@ZnFe2O4 as a Magnetic Adsorbent for Remediation of Levofloxacin Antibiotic from Aqueous Solutions
Abstract
High Resolution Image Download MS PowerPoint Slide The Arabic gum- grafted -hydrolyzed polyacrylonitrile/ZnFe 2 O 4 (AG- g [email protected] 2 O 4 ) as organic/inorganic adsorbent was obtained in three steps using grafted PAN onto Arabic gum in the presence of ZnFe 2 O 4 magnetic nanoparticles and then hydrolysis by alkaline solution. Fourier transform infrared (FT-IR), energy-dispersive X-ray analysis (EDX), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), and the Brunauer–Emmett–Teller (BET) analysis analyses were used to characterize the chemical, morphological, thermal, magnetic, and textural properties of the hydrogel nanocomposite. The obtained result demonstrated that the AG- g [email protected] 2 O 4 adsorbent showed acceptable thermal stability with 58% char yields and superparamagnetic property with magnetic saturation (Ms) of 24 emu g –1 . The XRD pattern showed that the semicrystalline structure with the presence of ZnFe 2 O 4 has distinct peaks which displayed that the addition of zinc ferrite nanospheres to amorphous AG- g -HPAN increased its crystallinity. The AG- g [email protected] 2 O 4 surface morphology exhibits uniform dispersion of zinc ferrite nanospheres throughout the smooth surface of the hydrogel matrix, and its BET surface area was measured at 6.86 m 2 /g, which was higher than that of AG- g -HPAN as a result of zinc ferrite nanosphere…
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