▎ 摘　　要

NOVELTY - Preparation of nitrogen-doped graphene involves dispersing graphite oxide in deionized water; carrying out ultrasonic treatment; filtering; drying to obtain graphene oxide; adding graphene oxide and Pluronic F-127 (RTM: Non-ionic copolymer surfactant) in ether solvent; stirring for 2-4 hours; volatilizing solvent to obtain graphene oxide/Pluronic F-127 (RTM: Non-ionic copolymer surfactant) mixture; placing mixture in inert gas and ammonia gas mixture; heating at 5-20 degrees C/minute at 800-1000 degrees C for 30-120 minutes; and cooling at room temperature. USE - Preparation of nitrogen-doped graphene. ADVANTAGE - The method produces nitrogen-doped graphene with smaller particle size. It has simple oxidation step and device requirement, convenient operation, and suitable for large scale industrial production. DETAILED DESCRIPTION - Preparation of nitrogen-doped graphene comprises dispersing graphite oxide in deionized water; carrying out ultrasonic treatment; filtering; drying to obtain graphene oxide; adding graphene oxide and Pluronic F-127 (RTM: Non-ionic copolymer surfactant) in ether solvent; stirring for 2-4 hours; volatilizing solvent to obtain graphene oxide/Pluronic F-127 (RTM: Non-ionic copolymer surfactant) mixture; placing mixture in mixed gas atmosphere consisting of inert gas and ammonia gas; heating at 5-20 degrees C/minute at 800-1000 degrees C for 30-120 minutes; and cooling at room temperature to obtain nitrogen-doped graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a process for preparing nitrogen-doped graphene (Drawing includes non-English language text).