PREPARATION METHOD OF GRAPHITE OXIDE AND GRAPHENE NANOSHEET

摘要

PURPOSE: A method for manufacturing graphite oxide and graphene nano-sheets is provided to produce high quality graphite oxide in comparison with a conventional method when it comes to graphite oxide synthesis and produce a method synthesizing high quality graphene nano-sheets by using the graphite oxide of high quality. CONSTITUTION: A method for manufacturing graphite oxide adds graphite into a mixture of phosphoric acid and sulfuric acid. The sulfuric acid is mixed as 10-500 ml per graphite 1g. The phosphoric acid is mixed as 1-100ml per graphite 1g. In the manufacturing method of the graphite oxide, a step which manufactures potassium permanganate is added when the graphite oxide is manufactured. [Reference numerals] (AA) Graphite/ sulfuric acid + phosphoric acid; (BB) Ultrasonic treatment; (CC) Add calcium permanganate; (DD) Add distilled water; (EE) Add peroxide; (FF) Filter and wash with hydrochloric acid; (GG) Wash with distilled water; (HH) Freezing and drying