| the effect of various types of protecting agent on chemical exfoliation of graphite to produce graphene oxide |
| Paper ID : 1512-UFGNSM-FULL |
| Authors: |
|
shaghayegh soltani *1, Maryam sharzehee2, Mina Leghaei2 1Textile department, Yazd University, YAZD_IRAN 2Yazd university |
| Abstract: |
| Abstract The most reliable method for preparing bulk quantities of graphene have centered on the chemical exfoliation of graphite. The process is occurred using a strong oxidizing agent to produce graphene oxide, non conductive and hydrophilic carbon material. In this research, the chemical exfoliation was done in different solution containing concentrated sulfuric acid and at least one protecting agent including, phosphorous acid, nitric acid and boric acid. The solutions were mixed with graphite and reacted with potassium permanganate to form graphene oxide. Initial solution in a high proportion of sulfuric acid and protecting agent were added to a mixture of graphite flakes and KMnO4. The reaction temperature was kept below 20◦C for few hours and then was warmed to 35◦C and stirred for 7 hours. After a slight exothermic reaction, the solution was heated to 50◦C for 12 hours. Further treatments were performed to the samples, the solid materials were collected. The characterizations of the samples were reported using different techniques, FT-IR, XRD, AFM and 13C NMR. The SEM micrographs were also provided. In the synthesized materials various types of functional groups and high proportion of aromatic rings and aromatic domains were confirmed. |
| Keywords: |
| graphite, graphene, graphene oxide, phosphorous acid, nitric acid, boric acid |
| Status : Paper Accepted (Poster Presentation) |
