Resumen de Exfoliation of nanographene from waste batteries and its application in methylene blue dye removal
K.Bogeshw Aran, K.Sathish Kumar, B. Karunanithi, M. Srividhya, G. Gowri
Graphene synthesis has been carried out electrochemically with the source being graphite rods mechanically separated from waste model batteries. TEM, Raman spectroscopic analysis has been used to characterize the exfoliated graphene. Mesoporous graphene nanoparticle has been confirmed through BET analysis wherein the surface area and the pore diameter has been reported as 710.4 m2/g and 29.6 Å respectively. The synthesized graphene nanoparticle is used to adsorb Methylene blue (MB) dye which is toxic by nature and the parameters studied are the dosage of adsorbent graphene, MB concentration, temperature and contact time. From UV, XRD, and FTIR the adsorption of MB on graphene has been confirmed. The graphene’s adsorption capacity at 300C was 272 mg/g. The adsorption followed fitted Temkin isotherm whereas the mechanism was pseudo-second-order. Physisorption and spontaneous adsorption process was reported by the thermodynamic study of the adsorption process.
