碳纳米管、氧化石墨烯和碳纳米纤维的红外和拉曼光谱研究

Infrared and Raman Spectroscopy Studies of Carbon Nanotubes,Graphene Oxide and Nanocellulose

以碳纳米管(CNTs)、氧化石墨烯(GO)和碳纳米纤维(CNFs)作为研究对象,采用透射电镜(TEM)、红外、Raman光谱对三种碳材料的结构和形貌进行表征与比较。结果表明,GO有着巨大的比表面积,较强的吸水性和优异的力学性能;表面含有羟基(-OH)、羰基(C=O)等大量的含氧官能团,易与其它基质或基体材料混合,从而制备复合材料。CNTs是一种中空结构的一维量子材料,具有较大的长径比,可通过合适取向制成导热优良材料;具有优异的力学性能,可用于增强复合材料的力学性能。CNFs具有三维网状结构良好的相容性、纳米尺度和良好的生物质特性,不仅可以提高材料强度,还有效减少了复合材料的重量,赋予其生物降解性等优点。Pb初始浓度和pH对CNTs、GO、CNFs吸附效果有一定影响,随着初始浓度增大,吸附率逐渐降低;随着pH增大,吸附率逐渐升高。研究结果证实三类碳材料在新能源材料领域具有巨大的应用前景。

Choosing carbon nanotubes(CNTs),graphene oxide(GO)and carbon nanofibers(CNFs)as research objects,the structures and morphologies of the three carbon materials were characterized and compared by transmission electron microscopy(TEM),infrared spectroscopy and Raman spectroscopy.The results showed that GO had a huge specific surface area,strong water absorption and excellent mechanical properties.The surface contained a large number of oxygen-containing functional groups such as hydroxyl(-OH)and carbonyl(C=O),which were easy to mix with other matrix or matrix materials to prepare composite materials.CNTs is a one dimensional quantum material of a hollow structure with a large aspect ratio,which can be made into a suitable orientation of excellent thermal conductivity material.It also has excellent mechanical properties,which can be used to enhance the mechanical properties of composite materials.CNFs have good compatibility,nanoscale and good biomass properties,which can not only improve the strength of the material,but also effectively reduce the weight of the composite materials,and give them the advantages of biodegradability.The results confirmed that the three types of carbon materials had great application prospects in the field of new energy materials.