▎ 摘　　要

NOVELTY - The preparation method of three-dimensional fold reduced graphene oxide, involves (A) reducing the three-dimensional porous tubular graphene to obtain three-dimensional porous tubular reduced graphene oxide, (B) hydrothermally treating the three-dimensional porous tubular reduced graphene oxide in a supercritical water environment and freeze-drying. USE - Preparation of three-dimensional fold reduced graphene oxide. ADVANTAGE - The method enables preparation of three-dimensional fold reduced graphene oxide with high sensitivity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for three-dimensional fold reduced graphene oxide.