| 초록 |
Zn ferrite is synthesized along with reduced graphene oxide (rGO) by simple one step hydrothermal method. The differences with the other reported work on this tertiary nanocomposite are- 1) The starting materials, chloride salts are used here as the source of Zn and Fe, and 2) The reaction condition in this work is 160 °C for 12 h. Synthesized products are characterized by FE-SEM, XRD, RAMAN, XPS and ATR. After confirmation of the successful synthesis of rGO-Zn ferrite nanocomposite, the adsorption property of it was studied in this research. rGO-Zn ferrites adsorption capacity towards rhodamine B (RB) is more than 9.3 mg/g, whereas its only 1.8 mg/g for bare Zn ferrite nanoparticles in aqueous media. RB removal efficiency of rGO-Zn ferrite and bare Zn ferrite is 99% and 20%, respectively. In case of rGO-Zn ferrite, within 5min, 60% RB has decomposed. The kinetic study suggests that the adsorption process pf removal of RB by bare Zn ferrite is pseudo 1st order, but when it incorporated with rGO, the kinetics changes into pseudo 2nd order. Langmuir isotherm is fulfilled by the rGO-Zn ferrite adsorption process, suggests monolayer adsorption. Thermodynamics parameters are also calculated for the process. |
