Structural and Optical Properties of Graphene Oxide Prepared by Modified Hummers’Method

• 作者: Harish C.Barshilia N.Selvakumar S.B.Krupanidhi Uday Pradhan
• 来源期刊: 计算机、材料和连续体(英文)
• 学科: 工学
• 关键词: Graphene OXIDE Graphite modified Hummers’method thermal ANNEALING optical properties
• 年，卷（期）: 2016,（6）
• 页码范围: 175-185
• 页数: 11页
• 分类号: TP3

摘要

Graphene oxide was synthesized from graphite flakes using modified Hummers’method.The interlayer spacings of graphite,graphite oxide and graphene oxide were measured using X-ray diffraction technique.The C/O atomic ratios of graphite oxide and graphene oxide were calculated from XPS measurements.The transformation of graphite to graphite oxide and finally to graphene oxide was clearly observed from the micro-Raman spectroscopy data and was confirmed from the FESEM micrographs.UV-VIS-NIR spectrophotometer was used to study the absorbance of graphene oxide and reduced graphene oxide samples.Finally,the chemically reduced graphene oxide was heat-treated in air to obtain chemically modified graphene.