▎ 摘　　要

NOVELTY - Graphene-attapulgite composite elastic aerogel, comprises graphene as matrix, and attapulgite as dispersed phase in a mass ratio of 1:1-2:1. The aerogel can withstand repeated compression with deformation rate of 0-80%. USE - The graphene-attapulgite composite elastic aerogel is useful in seawater desalination (claimed). ADVANTAGE - The graphene-attapulgite composite elastic aerogel : has better evaporation performance; increases the solar light-to-heat conversion efficiency; reduces energy loss; maintains long-term repeated use; and does not have residual salt after desalination of sea water. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing graphene-attapulgite composite elastic aerogel, comprising (i) preparing graphene oxide dispersion by Hummers method, (ii) adding attapulgite into deionized water and stirring evenly, carring out ultrasonic centrifugation to remove the lower layer of precipitate to obtain the dispersion liquid, carrying out second time ultrasonic centrifugation to remove the lower layer of precipitate to obtain attapulgite dispersion liquid, (iii) uniformly mixing the graphene oxide dispersion and attapulgite dispersion and then adding reducing agent, (iv) adding the mixed dispersion into container and heating until the fluidity is lost to obtain partially reduced hydrogel, (v) freezing, thawing and heating the partially reduced hydrogel to obtain hydrogel, and (vi) subjecting the hydrogel to secondary dialysis treatment, carrying out freeze-drying and oven heat treatment in sequence to obtain final product. (1) use method of graphene-attapulgite composite elastic aerogel in seawater desalination, comprising converting solar energy into heat energy to vaporize seawater by using the photothermal converter of seawater desalination device, and it can reduce the concentration of ions in seawater.