▎ 摘　　要

NOVELTY - Preparing nano hole graphene by thermally contacting comprises (a) dispersing graphene oxide in deionized water to obtain graphene oxide suspension liquid, (b) freeze-drying the graphene oxide suspension liquid to obtain graphene oxide aerogel, or drying the suspending liquid at constant temperature to obtain graphene oxide paper, and (c) heating the aerogel on heat source, combusting and expanding, and reducing the graphene oxide to obtain nano hole graphene aerogel, or heating the graphene oxide paper on the heat source, combusting and expanding, and reducing the graphene oxide. USE - The method is useful for preparing nano hole graphene by thermally contacting (claimed). ADVANTAGE - The method: performs combustion and expansion process within short period (few seconds); can rapidly remove oxygen-containing functional groups; is suitable for large-scale production; and can quickly produce the nano holes graphene having large specific surface area. DETAILED DESCRIPTION - Preparing nano hole graphene by thermally contacting comprises (a) dispersing graphene oxide in deionized water to obtain graphene oxide suspension liquid, (b) freeze-drying the graphene oxide suspension liquid to obtain graphene oxide aerogel, or drying the suspending liquid at constant temperature to obtain graphene oxide paper, and (c) under air atmosphere, pre-heating heat source to more than 200 degrees C, stabilizing the temperature, heating the aerogel on the heat source, combusting and expanding, and reducing the graphene oxide to obtain nano hole graphene aerogel, or under air atmosphere, pre-heating heat source to more than 200 degrees C, stabilizing the temperature, heating the graphene oxide paper on the heat source, combusting and expanding, and reducing the graphene oxide to obtain nano hole graphene paper.