Hydrogen-bonded organic framework nanosheet, preparation method and application thereof

A preparation method of a hydrogen-bonded organic framework nanosheet, comprising following steps:

• mixing and dissolving 1,2,4,5-tetrakis (4-carboxyphenyl) benzene with N,N-dimethylformamide in a container, placing the container uncapped in a large container filled with water, sealing the large container, followed by standing and heating, suction filtering to obtain colorless crystals, drying to obtain a solid material, grinding and dispersing the solid material in a solvent, performing ultrasonication in an ice-water bath condition, centrifuging to discard supernatant, and drying to obtain the hydrogen-bonded organic framework nanosheet;
• wherein the 1,2,4,5-tetrakis (4-carboxyphenyl) benzene is mixed with the N, N-dimethylformamide, and heated to dissolve solid, so a concentration of the 1,2,4,5-tetrakis (4-carboxyphenyl) benzene is 1-50 mg/mL;
• a temperature for the standing and heating is more than or equal to 100° C.;
• a duration for the standing is 1-7 days;
• after the suction filtering to obtain the colorless crystals, a temperature for the drying is 60-200° C.