▎ 摘　　要

NOVELTY - Preparing graphene nanobelts involves reducing carbon nanotubes with carbon nanotubes as raw material in high-purity inert atmosphere under protection of dimethyl ether derivatives, and organic carbon nanotubes. The certain amount of carbon nanotubes is added to dimethyl ether derivative, organic solvent in accordance with mass ratio of carbon nanotubes, and sodium potassium liquid alloy. The certain amount of sodium potassium liquid alloy is added to mixture at room temperature for 1-5 days to prepared mixture 1. The solid residue is collected by suction filtration. USE - Method for preparing graphene nanobelts used for synthesizing nanometre composite material (claimed). ADVANTAGE - The method enables to prepare graphene nanobelts is prepared in simple, convenient, cost-effective, and eco-friendly manner, has strong conductivity and strong dispersibility. DETAILED DESCRIPTION - Preparing graphene nanobelts involves reducing carbon nanotubes with carbon nanotubes as raw material in high-purity inert atmosphere under protection of dimethyl ether derivatives, and organic carbon nanotubes. The certain amount of carbon nanotubes is added to dimethyl ether derivative, organic solvent in accordance with mass ratio of carbon nanotubes, and sodium potassium liquid alloy. The certain amount of sodium potassium liquid alloy is added to mixture at room temperature for 1-5 days to prepared mixture 1. The solid residue is collected by suction filtration, washed with solid solution for 1-3 times in order of the mass ratio of solid residue to cleaned solution. The carbon nanotubes is cutted in accordance with solid residue, and oxidized acid in mass ratio of the volume of solid residue is added to oxidized acid, stirred for 1-24 hours in accordance with oxidant, and solid residue ratio. The oxidant is stirred at room temperature for 1-5 hours to obtain mixture 2 which is stirred at 60-90 degrees C for 1-5 hours, then excess oxidant is removed with hydrogen peroxide and hydrochloric acid which is used to removed metal oxide produced by oxidant. The solid residue is repeatedly washed until filtrate is neutrallized to obtain suspension of graphene nanobelt. The graphene nano-belt suspension is dried by ultrasonic dispersion freezed at constant temperature, dried to obtain solid powder of graphene nanobelt.