▎ 摘　　要

NOVELTY - Growing graphene composite aerogel on the fiber surface comprises e.g. adding graphene oxide to water to obtain a graphene oxide dispersion, adding a reducing agent to the graphene oxide dispersion, sonicating for 1-2 hours to obtain a graphene dispersion, placing the extracted fiber or the pretreated fiber in an ultra-fine tubular mold and the ends of the fiber are fixed, injecting graphene dispersion into the ultra-fine tubular mold, sealing, heating at a temperature of 20-180 degrees C, hydrothermal reduction for 2-18 hours, washing the hydrothermally reduced fiber water to obtain graphene hydrogel-loaded fibers, the inner diameter of the tubular mold is 0.05-5 mm, and winding the fiber supported by graphene hydrogel, drying to form a pore structure, and obtaining graphene aerogel-loaded fiber; 4. Preparation of composite graphene aerogel-loaded fiber, taking out and washing to obtain a graphene aerogel composite fiber, the functional material solution concentration is 0.1-100 g/l. USE - The method is useful for growing graphene composite aerogel on the fiber surface. DETAILED DESCRIPTION - Growing graphene composite aerogel on the fiber surface comprises (i) adding graphene oxide to water to obtain a graphene oxide dispersion, adding a reducing agent to the graphene oxide dispersion, sonicating for 1-2 hours to obtain a graphene dispersion, the mass ratio of graphene oxide to reducing agent is 1: (0.3-1), the concentration of the graphene oxide dispersion is 1-10 mg/ml, the reducing agent is ascorbic acid, sodium hydrogen sulfite, ethylenediamine, hydrazine hydrate or hydrogen iodide, (ii) placing the extracted fiber or the pretreated fiber in an ultra-fine tubular mold and the ends of the fiber are fixed, injecting graphene dispersion into the ultra-fine tubular mold, sealing, heating at a temperature of 20-180 degrees C, hydrothermal reduction for 2-18 hours, washing the hydrothermally reduced fiber water to obtain graphene hydrogel-loaded fibers, the inner diameter of the tubular mold is 0.05-5 mm, and (iii) winding the fiber supported by graphene hydrogel, drying to form a pore structure, and obtaining graphene aerogel-loaded fiber; 4. Preparation of composite graphene aerogel-loaded fiber, the functional material is formulated into a functional material solution, and the graphene aerogel-loaded fiber is immersed in the functional material solution for 1-24 hours, taking out and washing to obtain a graphene aerogel composite fiber, the functional material solution concentration is 0.1-100 g/l, the functional material is a metal organic framework compound, carbon nanotubes, small molecule dyes, gold nanoparticles, polyaniline, silicon dioxide, titanium dioxide, aluminum oxide, silicon carbide or silicon nitride.