Green synthesis of eco-friendly magnetic metal-organic framework nanocomposites (AlFum -graphene oxide) and pollutants (dye and pharmaceuticals) removal capacity from water

• Published in: Materials chemistry and physics 2023-07, Vol.302, p.127720, Article 127720
• Main Authors: Mahmoodi, Niyaz Mohammad, Bakhtiari, Mohammad, Oveisi, Mina, Mahmoodi, Bahaaddin, Hayati, Bagher
• Format: Article
• Language: English
• Subjects: AlFum; Contaminant removal; Graphene oxide; Green synthesis and characterization; Magnetic nanocomposite; Water
• ISSN: 0254-0584; 1879-3312
• DOI: 10.1016/j.matchemphys.2023.127720

Herein, Graphene Oxide (GO), CoFe2O4, CoFe2O4/GO nanocomposite, aluminum fumarate (AlFum), and AlFum-CoFe2O4/GO (ACG) eco-friendly nanocomposites with different amounts of CoFe2O4/GO nanocomposite (5, 10, and 15 wt% denoted as 5ACG, 10ACG, and 15ACG, respectively) were green synthesized and characterized using FTIR, SEM, XRD, TEM, XRD, EDX, and BET. The XRD patterns of ACGs indicate that AlFum is fixed onto the surface of CoFe2O4/GO and its structure is well maintained. The SEM and TEM images indicated the 10ACG with good size distribution and shape. The EDX spectrum of ACG showed the homogeneous distribution of O, Fe, and Co in the synthesized materials. The synthesized ACG nanocomposite dispersed in water could be effortlessly separated from wastewater by an external magnet within several seconds. The dye (Direct Red 23: DR23) adsorption capacity of AlFum, 5ACG, 10ACG, and 15ACG was 120, 145, 230, and 167 mg/g, respectively. The Langmuir isotherm is a more adequate isotherm for characterizing the adsorption (R2 = 0.9998, 0.9918, 0.9997, and 0.9996 for AlFum, ACG-5, ACG-10, and ACG-15 respectively). Adsorption followed the pseudo-second-order kinetic. In addition, the synthesized composite had pharmaceuticals (tetracycline and doxycycline) removal ability. •Aluminum fumarate-CoFe2O4/graphene oxide nanocomposites were green synthesized.•SEM and TEM images indicated the good size distribution and shape of nanocomposite.•The EDX of nanocomposites showed the homogeneous distribution of O, Fe, and Co.•Adsorption capacity for Direct Red 23 was 230 mg/g.•The synthesized composite had pharmaceuticals (tetracycline and doxycycline) removal ability.