Modified aluminosilicate inorganic mesoporous material and preparation method therefor

A preparation method for a modified aluminosilicate inorganic mesoporous material, comprising the following steps:

• S1, after crushing an aluminosilicate, screening aluminosilicate particles of 80 meshes to 100 meshes, a specific surface area of the aluminosilicate being 14 m2/g to 16 m2/g;
• S2, soaking the aluminosilicate particles obtained in step S1 in a nitrate solution at a concentration of 1 mol/L to 6 mol/L for 12 h to 24 h, with each 1 g of the aluminosilicate particles corresponding to a volume of 10 mL to 60 mL of the nitrate solution, after filtration, performing drying at 95° C. to 110° C., and then performing calcination at 400° C. to 500° C. for 1 h to 2 h, to obtain primary modified aluminosilicate particles;
• a nitrate being either sodium nitrate or potassium nitrate;
• and
• S3, soaking the primary modified aluminosilicate particles obtained in step S2 in a chitosan solution with a temperature of 40° C. to 60° C. and a mass concentration of 3% to 5% for 0.5 h to 3 h, the chitosan solution being an alkaline chitosan solution with a pH value of 9.5-10.5, and after filtration and washing, performing drying at 95° C. to 110° C., to obtain a modified aluminosilicate inorganic mesoporous material.