▎ 摘　　要

NOVELTY - Preparation of graphene oxide nanobelt comprises adding 50 ml concentrated sulfuric acid and 0.1 g multi-walled nanotubes in 150 ml three-necked flask, stirring for 2 hours until appearance of homogeneous black solution, slowly adding 0.1-0.5 g potassium permanganate to solution, stirring mixture at room temperature for 1 hour, heating to 70 degrees C for 1 hour, pouring reaction solution into 500 ml deionized water, centrifuging to get precipitates, washing with dilute hydrochloric acid solution and deionized water. USE - Method for preparing graphene oxide nanobelt (claimed). ADVANTAGE - The method is simple. The cutting degree of oxidation of carbon nanotube is easy to adjust.