Acid Red 88 Dye Degradation By Green Synthesized CeO_2/RGO Nanohybrid Photocatalyst Under Solar Light

摘要

A sustainable method of preparation and its utilization in harvesting renewable energy is a prime concern in environmental protection. We report here the preparation of a hybrid inorganic semiconductor with organic carbon base as a solar active photocatalyst. The prepared catalyst is used for the environmental remediation of degrading dye molecules in an aqueous medium. Reported CeO_2/RGO nanohybrid catalyst (NHC) synthesis includes green synthesis of RGO using Carica papaya leaf extract followed by nanoceria coating over the reduced graphene oxide (RGO). The prepared catalyst was characterized by SEM, XRD, EDX, FTIR, BET surface area and UV-DRS. Photo-catalytic degradation study of the acid red 88 (AR 88) dye by NHC was carried out under both UV and direct solar lights. Reaction kinetics for the photocatalytic degradation was studied.