▎ 摘　　要

NOVELTY - Preparing graphene nanohole surface involves dispersing graphene oxide in a solvent to obtain ultrasonic graphene oxide dispersion liquid for future use and then dispersing metal phthalocyanine in solvent ultrasonically to obtain a metal phthalocyanine dispersion or metal phthalocyanine alloy precursor dispersion liquid for future use. The graphene oxide dispersion liquid is added with metal phthalocyanine or metal phthalocyanine alloy dispersion liquid and then the obtained liquid is stirred for 1-12 hours to obtain suspension. The obtained suspension is filtered through a polycarbonate. USE - Method for preparing graphene nanohole surface (claimed) used in preparation of deoxyribonucleic acid sequencing, gas separation and purification of ion channels. ADVANTAGE - The method enables to prepare graphene nanohole surface in simple manner. DETAILED DESCRIPTION - Preparing graphene nanohole surface involves dispersing graphene oxide in a solvent to obtain ultrasonic graphene oxide dispersion liquid for future use and then dispersing metal phthalocyanine in solvent ultrasonically to obtain a metal phthalocyanine dispersion or metal phthalocyanine alloy precursor dispersion liquid for future use. The graphene oxide dispersion liquid is added with metal phthalocyanine or metal phthalocyanine alloy dispersion liquid and then the obtained liquid is stirred for 1-12 hours to obtain suspension. The obtained suspension is filtered through a polycarbonate porous membrane and then the filtered material is dried in vacuum at 60-100 degrees C for 3-8 hours to obtain black powder. The obtained black powder is kept in quartz tube in tubular furnace and then the quartz tube is kept in protective gas atmosphere for 10-30 minutes, where the flow rate of protective gas is 20-200 milliliters per minute. The quartz tube is heated at 400-1000 degrees C for 1-10 hours and then the heated material is cooled to room temperature to obtain the desired product.