▎ 摘　　要

NOVELTY - Graphene nanocomposite gel contains 8-14 pts. wt. graphene, 2-5 pts. wt. concentrated sulfuric acid, 2-5 pts. wt. phosphoric acid and 1-1.5 pts. wt. plant essential oils, and further comprises 3000-5000 pts. wt. butyl titanate, 60-80 pts. wt. cerium nitrate, 2000-3000 pts. wt. absolute ethanol, and 300-500 pts. wt. dilute hydrochloric acid with pH of 3-4. USE - The graphene nanocomposite gel is used for removing formaldehyde (claimed). ADVANTAGE - The material of the graphene nanocomposite gel has high aldehyde-removing efficiency, where at present, ordinary photocatalysts can decompose formaldehyde under UV light conditions, while the UV light area in sunlight is relatively small and the content is relatively low. The material of the graphene nanocomposite gel realizes the effect of efficiently decomposing formaldehyde under the condition of no UV rays. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a preparation process of the graphene nanocomposite gel, involving (a) taking out a certain amount of graphene oxide, and grinding the graphene oxide so that the particle size of the graphene is 5-10 mu m, adding butyl titanate to the container, slowly dripping absolute ethanol under high-speed stirring, and continuously stirring for 45 minutes until a light yellow transparent solution, (b) ultrasonically dispersing graphene oxide in dilute hydrochloric acid, adding cerium nitrate in the pH of 3-4 evenly while stirring, then stirring at high speed for 30 minutes, slowly dripping absolute ethanol to the above mixture, continuously stirring for 30 minutes, leaving still and aging at room temperature for 5 days, and drying at 20-30 degrees C for 10-15 days, (c) calcining, pouring the prepared graphene oxide and titanium dioxide into a mixer and evenly mixing them, putting the mixture into a calcining device for high-temperature calcination, and taking out the mixture for cooling, (d) mixing treatment by putting the cooled graphene oxide and titanium dioxide into a concentrated sulfuric acid solution, simultaneously adding phosphoric acid to the solution, evenly stirring, adding plant essential oils, and finally mixing them evenly, (e) preparing the formaldehyde-removing material, pouring the mixed solution in step (d) into a mold, and freeze-drying to remove moisture, (f) calcining at 100-520 degrees C for 2-6 hours, and cooling to room temperature, (g) grinding and filtering to obtain 800-1200 mesh powder, i.e., a graphene nanocomposite gel material for removing formaldehyde; and (2) an application of the graphene nanocomposite gel for removing formaldehyde, where the nanocomposite gel is dissolved in water at 90-100 degrees C and then added to the paint to remove formaldehyde.