本文選題：超臨界乙醇 + 剝離��； 參考：《現(xiàn)代化工》2017年09期

【摘要】：以超臨界乙醇為介質(zhì)剝離石墨制備了石墨烯,考察了實驗條件對石墨烯收率的影響。當石墨/乙醇質(zhì)量濃度為0.32mg/mL,溫度為250℃,壓力為26 MPa,反應時間為0.5 h時,石墨烯的收率為12.49%。在該實驗條件下,經(jīng)過6次反復冷熱循環(huán)過程后,石墨烯的收率達到最大為21.32%。采用透射電子顯微鏡(TEM)、X射線衍射儀(XRD)及拉曼光譜(Raman)等技術(shù)對石墨烯樣品進行表征,TEM分析結(jié)果表明,超臨界法可剝離得到薄層石墨烯;XRD和拉曼分析結(jié)果表明,由該方法可以得到結(jié)構(gòu)缺陷較少的優(yōu)質(zhì)石墨烯。
[Abstract]:Graphene was prepared by stripping graphite with supercritical ethanol. The effect of experimental conditions on the yield of graphene was investigated. The yield of graphene was 12.49 when the mass concentration of graphite / ethanol was 0.32 mg / mL, the temperature was 250 鈩，

本文編號：1868114