电弧放电法制备石墨烯VIP

电弧放电法制备石墨烯 电弧放电法制备石墨烯 关磊关磊 1,* 1辽宁石油化工大学 化学与材料科学学院，抚顺 113001 *gl_mater 石墨烯自从2004年问世以来1，就引起了科学家的极大兴趣和广泛的关注。当石墨的层数少于10时，就 会表现出三维石墨不同的电子结构，因此将10层以下的石墨材料统称为石墨烯材料2。石墨烯按形貌分类， 可分为石墨烯纳米片、纳米线、纳米带和膜等。按取向分类，可分为水平和自由站立石墨烯。一般制得的 石墨烯都带有褶皱。采用电弧放电法制备石墨烯是近几年才出现的，分为直流和交流放电两种。原料为石 墨或氧化石墨； 放电气氛为不活泼气体、 H2、 NH3或空气； 放电方式主要以高电流和低电压的直流放电为主； 产物石墨烯的层数小于10层，尺寸小于500 nm；产物中非碳元素掺杂情况与放电气氛有关。在空气以及吡 啶气氛下可以生成氮掺杂的石墨烯，在B2H6气氛下可以生成硼元素掺杂的石墨烯。与其它方法相比，电弧 放电法制得的石墨烯一般具有较高的电导率和较强的抗氧化能力。 关键词：电弧放电；石墨烯；制备 参考文献 1 Novoselov, K.S.; Geim, A.K.; Morozov, S.V., et al. Science 2004, 306: 666. 2 Partoens, B.; Peeters, F.M. Phys. Rev. B 2006, 74: 075404. Preparation of Graphene by Arc Discharge Lei Guan 1,* 1School of Chemistry and Materials Science, Liaoning Shihua University, Fushun, 113001 Since graphene was born in 20041, it has caused great interest and wide attention of scientists. When less than 10 layers of graphene, it will show different electronic structure of three-dimensional graphite, so less than 10 layers of graphite materials are referred to graphene materials2. Graphene is classified to graphene nanosheets, nanowires, nanobelts and film, according to morphologies of graphene, and it can be divided into level and free-standing graphene, according to orientation of graphene. General speaking, graphene prepared has the folds. Graphene is prepared by arc discharge only appears in recent years, divided into two kinds of DC and AC discharges. Raw materials include graphite or graphite oxide; discharge atmosphere includes inactive gas, H2, NH3 or air; the main mode of discharge is low voltage high current DC discharge; The product is less than 10 layers and less than 500 nm in size of graphene; Doped products depend on discharge atmosphere. The nitrogen-doped graphene can be prepared at the atmosphere of air or pyridine. The boron-doped graphene can be prepared at the atmosphere of B2H6. Compared with other method