▎ 摘　　要

NOVELTY - Preparing near infrared photo-thermal catalyst involves mixing the graphene oxide dispersion liquid and dehydrating agent to obtain graphene oxide solution, mixing the graphene oxide solution and branched polyethylene imine and drying to obtain the graphene oxide-polyethylenimine carrier, after mixing the graphene oxide-polyethylenimine carrier with water, adjusting the pH value to 2-4.5, dropping single substituted Keggin type polyoxometalates aqueous solution, performing ion replacement reaction, obtaining the near infrared photo-thermal catalyst; the solute of the mono-substituted Keggin type POM aqueous solution is K_6SiW_11Co (H_2O) O_39 or H_4SiW_11Ce (H_2O) _4O_39. USE - Method for preparing near infrared photo-thermal catalyst used in photo-thermal catalysis field for cycloaddition reaction of carbon dioxide and epoxide (claimed). ADVANTAGE - The method enables to prepare near infrared photo-thermal catalyst which provides IR photo-thermal for local heating, so that the catalyst at a mild temperature and atmospheric conditions at very high conversion frequency accelerates the cycloaddition reaction of carbon dioxide and epoxide.