Photocatalytic degradation of ciprofloxacin using CuFe 2O 4@methyl cellulose based magnetic nanobiocomposite

摘要

Herein, magnetically separable CuFe2O4@methyl cellulose (MC) as a novel magnetic nanobiocomposite photocatalyst was synthesized with a facile, rapid, green, and new microwave-assisted method. After that, CuFe2O4@MC was characterized with FESEM, EDS, FT-IR, XRD, TGA, and VSM techniques. To measure CuFe2O4@MC photocatalytic activity, ciprofloxacin (CIP) removal ability of CuFe2O4@MC was investigated under the conditions such as initial CIP concentrations (3, 5, 7, and 9?mg/L), pHs (3, 7, and 11), photocatalyst loadings (0.025, 0.05, 0.1, 0.2, 0.3, and 0.4?g), and irradiation time (15, 30, 45, 60, 75, and 90?min). Kinetic process was evaluated with thepseudo-first order and theLangmuir-Hinshelwoodmodels. CIP concentration was measured with high performance liquid chromatography (HPLC). The maximum CIP removal efficiency in the optimal conditions which contained pH?=?7, CIP initial concentration of 3?mg/L, photocatalyst loading of 0.2?g, and at irradiation time 90?min was achieved 72.87 % and 80.74 % from real and synthetic samples, respectively. Also, COD removal efficiency in the optimal conditions was achieved 68.26 %. Furthermore, the CuFe2O4@MC reusability and chemical stability were examined and 73.78 % of CIP was degraded after the fourth cycle.Advantages of this technique were as follows:?CuFe2O4@MC as a new nanobiomagnetic photocatalyst was synthesized with a facile, fast, and green method and were characterized with FESEM, EDS, FT-IR, XRD, TGA, and VSM techniques.?Ferromagnetic property and pure-phase spinel ferrites of CuFe2O4@MC were confirmed and significant photocatalytic activity of CuFe2O4@MC was observed.?Easily gathering, reusability and good chemical stability were interests of this nanobiomagnetic photocatalyst.