▎ 摘　　要

NOVELTY - Manufacture of composite photocatalyst involves dispersing graphite carbon nitride in deionized water, ultrasonically processing to obtain a suspension of graphite carbon nitride, adding nickel(II) nitrate hexahydrate, aluminum nitrate nonahydrate, hexamethylenetetramine and graphene oxide to the suspension, stirring and heating to obtain a precipitate, washing with water and ethanol, and drying. USE - Manufacture of composite photocatalyst used in photocatalytic reduction of carbon dioxide (claimed). ADVANTAGE - The method is simple by using widely available raw materials. The composite photocatalyst has improved photocatalytic carbon dioxide reduction performance.