▎ 摘　　要

NOVELTY - A composite comprising graphene-porphyrin compound (I) is new. USE - Graphene - porphyrin compound for use in visible light absorption graphene - porphyrin optical catalyst. ADVANTAGE - The oxidoreductase co-factor is prepared in a cost-effective manner and has wide range of applications in artificial lights. DETAILED DESCRIPTION - A composite comprising graphene-porphyrin compound of formula (I). INDEPENDENT CLAIMS are included for the following: (1) a regenerating method of oxidoreductase cofactor, which involves treating methyl viologen dissolved in phosphate buffer solution with ruthenium (II) composite in a reactor and the reacted mixture is treated with redox mediator that is selected from rhodium (III) composite to obtain product (2) a method for manufacturing the formic acid from the carbon dioxide by the enzymatic reaction which involves treating methyl viologen dissolving in a phosphate buffer solution and ruthenium (II) composite in a reactor and producing the formic acid by adding formate dehydrogenase and rhodium (III) composite and passing light to the formate dehydrognase in the presence of carbon dioxide to obtain visible light absorption graphene-porphyrin optical catalyst.