▎ 摘　　要

NOVELTY - Preparing carbon dioxide photoreduction catalyst comprises (1) preparing aqueous solution by taking 1-5 g zinc acetate dihydrate in every 100 ml aqueous solution, 0-92.5 mg powder graphene oxide and 5-10 ml triethanolamine, stirring components and mixing, (2) centrifuging and separating the aqueous solution obtained in the step (1), washing the separated precipitate and drying to obtain the sample, (3) mixing the sample obtained for every 100 ml of aqueous solution in step (2) with 50 ml of deionized water, adding 37-185 mg sulfonated cobalt phthalocyanine, stirring and mixing uniformly, reacting mixture at 120°C for 12 hours, then separating mother liquor by centrifugation, ultrasonically washing the precipitate with purified water and centrifuging until there is no sulfonic acid group in the washing water with barium chloride, ultrasonically washing with absolute ethanol, and centrifuging samples, and (4) baking the sample obtained in step (3) and drying. USE - The method is useful for preparing carbon dioxide photoreduction catalyst. ADVANTAGE - The method: uses gas-solid two-phase reaction process, which has small diffusion resistance. The catalyst has excellent performance and high selectivity of carbon dioxide catalytic reduction to carbon monoxide.