Preparation method and application of formaldehyde removal agent for artificial board

The invention discloses a preparation method and application of a formaldehyde removal agent for artificial boards, which comprises the following steps: ultrasonically dispersing graphene oxide in deionized water, and adjusting the pH value to be alkaline to obtain graphene oxide dispersion liquid; the preparation method comprises the following steps: ultrasonically dispersing zinc nitrate, cuprous nitrate, nano copper powder and sodium citrate in deionized water to obtain a metal ion dispersion liquid; adding the metal ion dispersion liquid into the graphene oxide dispersion liquid, uniformly stirring, carrying out hydrothermal reaction, filtering to obtain a solid, and roasting in a nitrogen atmosphere to obtain a graphene composite material; then preparing graphene-like phase carbon nitride loaded with cerium oxide by taking melamine and cerium oxalate as raw materials; and finally, uniformly mixing the graphene composite material, the cerium oxide-loaded graphene-like phase carbon nitride, polyethylene gl