Enhanced photodegradation activity of Rhodamine B by Co3O4/Ag3VO4 under visible light irriadiation

► Novel composite Co3O4/Ag3VO4 as catalyst. ► Higher activity for the photodegradation of RhB under visible light irradiation. ► Calcination temperature of catalyst has effect on photocatalytic activity. ► Catalyst electrodes demonstrate a rapid photocurrent response.