Hummers法制备氧化石墨烯,各种试剂的作用都是怎样的( 二 )


方法五:温老师的方法The 500-mesh flake graphite (1 g) and NaNO3(0.75 g) were dissolved in 75 mL 98 wt % H2SO4 under magnetic stirring in ice-water bath and KMnO4(4.5 g) were added gently. After completion of the addition, the reaction mixture was stirred co