Abstract
AbstractMagnetic TiO2 nanocomposites with good monodispersity were successfully synthesized via a mild sol–gel method, which were used for removal of salicylic acid (SA) residues from aqueous solution. These as-prepared nanocomposites were extensively characterized by transmission electron microscopy, scanning electron microscope, N2 adsorption–desorption isotherm with the Brunauer-Emmett-Teller method, Fourier-transformed infrared spectra, X-ray diffraction, and vibrating sample magnetometer. These results indicated that magnetic TiO2 nanocomposites possessed the core-shell structure of good dispersibility, excellent chemical stability, and magnetic property (Ms = 22.11 emu/g). According to the results of series experiments, magnetic TiO2 nanocomposites showed fast kinetics and satisfied adsorption capacity for adsorption of SA. Under the optimum experimental condition, the adsorption process followed pseudo-second-order reaction kinetics and Langmuir adsorption isotherm. Moreover, the thermodynamic para...
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