▎ 摘　　要

NOVELTY - Graphite oxide is ultrasonically-dispersed in deionized water, cation surface active agent is added to the mixture and stirred completely. L-cysteine and sodium tungstate are added to obtained mixture, continuously stirred and then hydroxylamine hydrochloride is added to mixture and stirred. The mixed disperse system is added into a hydrothermal reaction container, hydrothermally reacted, naturally-cooled, washed and vacuum-dried. The obtained solid product is treated in nitrogen/hydrogen mixed gas atmosphere, to obtain graphene composite nano material. USE - Preparation of graphene composite material. ADVANTAGE - The method efficiently and economically provides graphene composite material by consuming organic solvent. DETAILED DESCRIPTION - Graphite oxide is ultrasonically-dispersed in deionized water, cation surface active agent is added to the mixture and stirred completely. L-cysteine and sodium tungstate are added to obtained mixture, continuously stirred and then hydroxylamine hydrochloride is added to mixture and stirred. The mass ratio of sodium tungstate and L-cysteine is 1:5. The mass ratio of sodium tungstate and hydrochloric acid hydroxylamine is 1:3-1. The mass ratio of sodium tungstate and oxidized graphite alkene is 1:1-1:4. The mixed disperse system is added into a hydrothermal reaction container and deionized water is added to adjust the volume-weight ratio of hydro-thermal reaction container to 80%, cationic surface active agent concentration to 0.02-0.05 and content of the graphite to 31.25-62.5 mmol/L, hydrothermally reacted at 180-200 degrees C for 24 hours and naturally-cooled to room temperature and separated. The collected solid product is washed fully using deionized water by centrifuged at 100 degrees C and then vacuum-dried. The obtained solid product is treated in nitrogen/hydrogen mixed gas atmosphere at 800 degrees C for 2 hours, to obtain graphene composite nano material.