Carbon and CNT fabricated carbon substrates for TiO 2 nanoparticles immobilization with industrial perspective of continuous photocatalytic elimination of dye molecules

Abstract

Abstract We utilize carbon nanotubes fabricated carbon plates with large surface area and high adsorption capacity as the substrate to immobilize TiO 2 nanoparticles without any agglomeration using solvent evaporation method. The photocatalytic activity is investigated in a continuous photocatalytic reactor to degrade three acid dyes, which is shown to be stable for 16 successive cycles. Response surface methodology (RSM) is used to optimize and model the binary system for a closer simulation of real industrial wastewater with the electrical energy consumption below 0.5 KWh/g COD . A fast and complete decolorization was achieved in 100 min by adding H 2 O 2 to the system.