Abstract
This paper evaluated one-pot synthesis of magnetic manganese graphene oxide nanocomposite (MnFe2O4-GO) for Rhodamine-6G (Rh-6G) removal from aqueous solutions. The presented adsorbent was characterized by scanning electron microscopy (SEM), vibrating sample magnetometer (VSM), Fourier transform infrared spectroscopy (FTIR), and X-ray powder diffraction (XRD). For the optimization, central composite design (CCD) was carried out to evaluate the effect of different parameters such as pH (6), equilibrium time (15 min) and adsorbent amount (0.6 g/L). Under the proposed conditions, the adsorption efficiency was investigated through Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherm models. Hence, due to high value of R2 (>0.99) the adsorption process was well fitted to Langmuir isotherm. Findings showed that the absorption capacity of MnFe2O4-GO was 24.96 mg.g−1 and unmodified GO 14.82 mg.g−1in 6 min. Based on the thermodynamic studies, the high values of ΔH° (146.19 KJmol−1) and ΔG° (−0.04 KJmol−1) indicated that the adsorption mechanism was endothermic and physio-sorption at room temperature. Overall, the results proved that the prepared MnFe2O4-GO nanocomposite was suitable to remove the Rh-6G from aqueous media.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Environmental Nanotechnology, Monitoring & Management
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
