▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide-based photocatalytic aerogel beads involves forming graphene oxide aqueous solution, dispersing graphene oxide powder ultrasonically in distilled water to obtain aqueous graphene oxide solution. The ratio of graphene oxide powder to volume of the distilled water is 1:1-10:1g/L. The photocatalyst is dispersed in graphene oxide aqueous solution. The dispersion is uniformly performed by ultrasound. The mass ratio of the photocatalyst to graphene oxide powder is 10:1-10:10. The graphene oxide/photocatalyst/alginate mixed solution is prepared by adding alginate powder to graphene oxide/photocatalyst dispersion prepared, and continue stirred until system is homogeneous. The mass ratio of salt powder to graphene oxide powder is 1:1-20:1. USE - Method for preparing reduced graphene oxide-based photocatalytic aerogel beads. ADVANTAGE - The method enables to prepare reduced graphene oxide-based photocatalytic aerogel beads that has simple process, low cost, rapid mass production, and excellent adsorption effect on organic dyes and photocatalytic degradation. DETAILED DESCRIPTION - Preparing reduced graphene oxide-based photocatalytic aerogel beads involves forming graphene oxide aqueous solution, dispersing graphene oxide powder ultrasonically in distilled water to obtain aqueous graphene oxide solution. The ratio of graphene oxide powder to volume of the distilled water is 1:1-10:1g/L. The photocatalyst is dispersed in graphene oxide aqueous solution. The dispersion is uniformly performed by ultrasound. The mass ratio of the photocatalyst to graphene oxide powder is 10:1-10:10. The graphene oxide/photocatalyst/alginate mixed solution is prepared by adding alginate powder to graphene oxide/photocatalyst dispersion prepared, and continue stirred until system is homogeneous. The mass ratio of salt powder to graphene oxide powder is 1:1-20:1. The mixed solution obtained is added dropwise to metal salt solution having concentration of 2-30mg/ mL to obtain graphene oxide-based hydrogel beads, which are allowed to kept to gel bead crosslinked completely. The hydrogel beads prepared are reduced to obtain reduced graphene oxide hydrogel beads. The hydrogel beads prepared are freeze-dried to obtain reduced graphene oxide-based aerogel beads.