▎ 摘　　要

NOVELTY - The method for preparing mineral acid intercalated graphene oxide-carbon dioxide absorbing material involves (a) adding flake graphite and sodium nitrate to three-necked flask, then adding concentrated sulfuric acid under ice water bath and stirring, then adding potassium permanganate and continuously reacting, heating and continuously stirring, adding deionized water and heating in water bath, stirring, adding deionized water and heating, then adding hydrogen peroxide and stirring, washing the product and vacuum drying to obtain graphene oxide, (b) then adding graphene oxide solution, ultrasonically processing the graphene oxide solution, adding mineral acid solution to beaker and continuously stirring in magnetic stirrer, then filtering and vacuum drying to obtain mineral acid intercalated graphene oxide material. USE - The method is useful for preparing mineral acid intercalated graphene oxide-carbon dioxide absorbing material. ADVANTAGE - The method enable simple and economical preparation of mineral acid intercalated graphene oxide-carbon dioxide absorbing material, and is suitable for mass production. DETAILED DESCRIPTION - The method for preparing mineral acid intercalated graphene oxide-carbon dioxide absorbing material involves (a) adding 2 g flake graphite and 1 g sodium nitrate to three-necked flask, then adding 46 ml concentrated sulfuric acid under ice water bath and stirring, then adding 6 g potassium permanganate and continuously reacting for 3 hours, heating at 35 degrees C and continuously stirring for 30 minutes, adding 92 ml deionized water and heating in water bath at 98 degrees C, stirring for 20 minutes, adding 280 ml deionized water and heating at 70 degrees C, then adding 20 ml hydrogen peroxide and stirring for 15 minutes, washing the product and vacuum drying to obtain graphene oxide, (b) then adding 6.06 mg ml-1 graphene oxide solution, ultrasonically processing the graphene oxide solution for 2-3 hours, adding 2.4 ml mineral acid solution to beaker and continuously stirring in magnetic stirrer for 24 hours, then filtering and vacuum drying at 40 degrees C to obtain mineral acid intercalated graphene oxide material, and (c) characterizing structure and carbon dioxide adsorption properties of mineral acid intercalated graphene oxide material by X-ray powder diffraction, determining the mineral acid intercalation of interlayer distance by Fourier-transform infrared spectroscopy analysis to determine functional groups (such as sulfate, phosphate and hydroxyl group) containing mineral acid intercalation graphene oxide material by nitrogen assay of mineral acid intercalation graphene oxide material of Brunauer-Emmett-Teller specific surface area, determining by carbon dioxide adsorption capacity of mineral acid intercalation oxide graphene material.