▎ 摘　　要

NOVELTY - Nitrogen doped reduced graphene oxide/cobalt titanate hybrid photocatalyst composite, comprises cobalt titanate modified with 1 wt.% nitrogen doped reduced graphene oxide dispersed in 500 ml of deionized water. USE - The composite is useful for semiconductor industries. ADVANTAGE - The composite: exhibits high photocatalytic activity due to high light absorption capacity; provides photocatalytic performance evaluation towards hydrogen evolution and methyl orange degradation under visible light irradiation with high stability and durability; provides control and optimized route for synthesis; and provides easily controllable experimental conditions and photocatalytic efficiency of design material for photocatalytic hydrogen production and methyl orange degradation under visible light irradiation; photocatalyst with optimal ratio of 1 wt.% is effective in the visible region of the spectrum as compared to other photo catalysts of the series; is simple precipitation followed by reflux experimental methods under ambient conditions; and is highly resistive to photocorrision with high stability and reusability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for synthesizing the photocatalyst composite, comprising (a) dispersing the cobalt titanate in the deionized water to obtain a solution, (b) adding stochiometric amount of graphene oxide and hydrazine monohydrate to form the nitrogen doped reduced graphene oxide added in the solution to obtain a reaction mixture, (c) refluxing the reaction mixture at a temperature of 80-90 degrees C for a period of 12 hours to obtain a refluxed material, and (d) centrifuging the refluxed material followed by multiple washing with deionized water and ethanol and further subjected to drying at a temperature of 75 degrees C overnight to obtain the photocatalyst composite.