利用液体炸药爆轰制备石墨烯薄片

Preparation of grapheme by detonation using liquid explosive

强氧化性酸的环境下,石墨易形成石墨层间化合物(GICs),利用石墨这一特性,将天然石墨置于发烟硝酸中,并加入硝基甲烷,配制成液体炸药,使用塑料容器盛装后放入爆轰反应釜中引爆。收集爆轰产物,并利用XRD、EDX、SEM、TEM、Raman光谱、比表面积与孔隙度分析仪进行分析,结果显示:制备出的石墨烯具有良好的晶体特性并呈现极薄的片状结构,其比表面积达到天然石墨的9.16倍,平均厚度约为14.73nm。

Graphite intercalation compounds（GICs）can be obtained when graphite is placed in strong oxidizing acids.Using this characteristic,we prepare liquid explosive by putting natural graphite in strong HNO3 and mixing it with CH3NO2.Then we poured the mixture into a plastic container and placed the container at the center of a detonation reactor to ignite the explosive mixture.After the detonation,we collected and analyzed the soot by XRD,EDX,SEM,TEM,Raman spectroscopy,the specific surface area and porosity analyzer.Results indicate that the prepared grapheme possesses perfect crystal properties and exhibits a structure of thin sheets,with a specific surface area 9.16 times that of natural graphite and an average thickness of about 14.73 nm.