• JOSEPHINE SARAH STEPHENSON
• BALAMURGAN ARUMUGAM
• SAYEEKANNAN RAMARAJ

A facile green process was developed for the synthesis of AgNPs - rGO composite by using Citrullus colocynthis leaf extract as a reducing and stabilizing agent. The morphology and microstructure of the magnetic nanocomposite was examined by FTIR, XRD, UV-VISIBLE and SEM. Here, the green synthesized nanocomposite display remarkable effective removal of Methylene Blue (MB) from aqueous solution, showing a maximum adsorption capacity reached up to 146.43 mg g-1 within only 30 mints at room temperature. The kinetics, isotherms and thermodynamics of the adsorption of MB have been studied at various experimental conditions (initial dye concentration of MB, adsorbent dosage, contact time and temperature). Adsorption kinetics and the equilibrium adsorption isotherm were found to follow a pseudo-second order kinetic model and Langmuir isotherm, respectively. The thermodynamic parameters indicated that the adsorption was spontaneous, favorable, and endothermic in nature. Moreover, AgNPs - rGO was very stable and can be readily reuse by washing with water. Therefore we believed that the prepared nanocomposite as a very good green adsorbent for eliminating MB from aqueous solution.

AgNPs- rGO composite, Methylene blue, Adsorption

"GREEN SYNTHESIS OF Ag NANOPARTICLES ON REDUCED GRAPHENE OXIDE NANOCOMPOSITE AND PROMISING APPLICATION FOR METHYLENE BLUE DYE REMOVAL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.513-529, December-2018, Available :http://www.jetir.org/papers/JETIR1812884.pdf

"GREEN SYNTHESIS OF Ag NANOPARTICLES ON REDUCED GRAPHENE OXIDE NANOCOMPOSITE AND PROMISING APPLICATION FOR METHYLENE BLUE DYE REMOVAL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp513-529, December-2018, Available at : http://www.jetir.org/papers/JETIR1812884.pdf