▎ 摘　　要

NOVELTY - Preparing 2-dimensional graphitic carbon nitride/1-dimensional multiwall carbon nano-tubes/2-dimensoonal-reduced graphene oxide hybrid photocatalytic material, comprises (i) adding multiwall carbon nano-tubes into concentrated nitric acid, heating and stirring for period of time, centrifuging, washing and drying to obtain multiwall carbon nano-tubes with rich surface defect, (ii) grinding graphitic carbon nitride and defect-rich multiwall carbon nano-tubes on the surface obtained in step (i), and then calcining to obtain 2-dimensional graphitic carbon nitride/1-dimensional multiwall carbon nano-tubes composite material, marked as CNM, and (iii) adding 2-dimensional graphitic carbon nitride/1-dimensional multiwall carbon nano-tubes composite material obtained in the step (ii) into de-ionized water for ultrasonic dispersion, adding graphene oxide, stirring, then transferring into the reaction kettle, hydrothermal reacting, centrifuging, washing and drying to obtain final product. USE - The 2D-g-C3N4/1D-MWNTs/2D-rGO hybrid photocatalytic material is useful for the photocatalytic conversion of carbon dioxide molecules to carbon monoxide and methane (claimed). ADVANTAGE - The method: has high-efficiency, simple preparation and simple operation process; will not cause waste of resources and the formation of secondary pollution; and is environmentally friendly photocatalyst for efficient pollution treatment. DETAILED DESCRIPTION - Preparing 2-dimensional graphitic carbon nitride/1-dimensional multiwall carbon nano-tubes/2-dimensoonal-reduced graphene oxide (2D-g-C3N4/1D-MWNTs/2D-rGO) hybrid photocatalytic material, comprises (i) adding certain amount of MWNTs into concentrated nitric acid, heating and stirring for period of time, centrifuging, washing and drying to obtain the MWNTs with rich surface defect, (ii) grinding g-C3N4 and the defect-rich MWNTs on the surface obtained in step (i), and then calcining to obtain the 2D-g-C3N4/1D-MWNTs composite material, marked as CNM, and (iii) adding 2D-g-C3N4/1D-MWNTs composite material obtained in the step (ii) into de-ionized water for ultrasonic dispersion, then adding certain amount of graphene oxide, stirring, then transferring into the reaction kettle, hydrothermal reacting for period of time at certain temperature, centrifuging, washing and drying to obtain final product.