▎ 摘　　要

NOVELTY - Preparing montmorillonite/graphene oxide rare earth aerogel comprises e.g. (i) preparing graphene oxide, and washing and removing impurities to make pH 7, freeze-drying the graphene oxide, and dispersing in the deionized water to obtain graphene oxide suspension, (ii) adding montmorillonite into the deionized water, stirring at room temperature for many days, allowing the montmorillonite to fully expand in water to form peel-off nano-montmorillonite suspension, (iii) taking the graphene oxide suspension and the nano montmorillonite suspension obtained in step (i) and (ii), stirring and mixing uniformly, adding deionized water, formulating mixture of montmorillonite and graphene oxide to obtain montmorillonite/graphene oxide hydrosol, (iv) adding crosslinking agent in the montmorillonite/graphene oxide hydrosol obtained in the step (iii), and stirring uniformly, (v) taking the hydrogel, freezing in liquid nitrogen for many minutes, and placing in a freeze dryer. USE - The gel is useful in the field of water purification treatment, high-grade adsorption material for sewage treatment. ADVANTAGE - The method: produce product has strong adsorption performance, and high stability in water. DETAILED DESCRIPTION - Preparing montmorillonite/graphene oxide rare earth aerogel comprises (i) preparing graphene oxide, and washing and removing impurities to make pH 7, freeze-drying the graphene oxide, and dispersing in the deionized water to obtain graphene oxide suspension, (ii) adding montmorillonite into the deionized water, stirring at room temperature for many days, allowing the montmorillonite to fully expand in water to form peel-off nano-montmorillonite suspension, (iii) taking the graphene oxide suspension and the nano montmorillonite suspension obtained in step (i) and (ii), stirring and mixing uniformly, adding deionized water, formulating mixture of montmorillonite and graphene oxide to obtain montmorillonite/graphene oxide hydrosol, (iv) adding crosslinking agent in the montmorillonite/graphene oxide hydrosol obtained in the step (iii), and stirring uniformly, (v) taking the hydrogel obtained in the step (iv), freezing in liquid nitrogen for many minutes, placing in a freeze dryer for few days to obtain porous montmorillonite/graphene oxide nano-aerogel with pore walls arranged in an orderly manner from montmorillonite and graphene oxide sheets.