摘要自2004年石墨烯被Geim等人发现以来，这种新型碳材料因其独特的、优越的物理和化学性质，如良好的导电导热性、比表面积、化学性质好、高机械强度等优越性能，一直是人们研究的热点。86875

本文通过改良的Hummers方法制备了氧化石墨烯，再将氧化石墨烯还原得到石墨烯。通过扫描电子显微镜、拉曼光谱和X射线衍射仪等手段来表征其特性。并使用紫外可见近红外分光光度计测吸附前后锰离子溶液的吸光度来算出吸附前后溶液中锰离子浓度，来研究石墨烯对锰离子的吸附作用。我们通过吸附动力学研究了时间对石墨烯吸附性能的影响，通过对实验结果的计算，我们发现石墨烯对锰离子的去除率能达到96%，吸附后锰离子浓度达到国家一级排放标准。而且和高岭土等其他吸附剂相比，石墨烯吸附优点是工艺简单，实际操作方便，不容易产生二次污染。

毕业论文关键词：石墨烯；锰离子；吸附；氧化石墨烯

ABSTRACT Since it was found in 2004 by Geim, the graphene, a novel Carbon Materials, has been the research hotspots in science。 Because it has the unique physical and chemical properties, such as the good eletric conductivity, high mechanical, strong superficial chemical activity and large surface。

 In this paper, the graphene oxide was prepared by modified Hummers method, and then the graphene was reduced by chemical method。 then the structure was characterized by scanning electron microscopy, Raman spectroscopy and X - ray diffraction。 And we study the the adsorption properties of graphene on the manganese ion by the UV spectrophotometer。 Finally, according to the experimental data, we have the conclusion。 The effect of the time on graphene adsorption properties was studied by adsorption kinetics, through the calculation of  results, we found that the efficiency of the graphene adsorption on manganese can come to 96%。 Manganese concentration reachese the national emission standards after the adsorption。 Compared with the other methods, the graphene has some advantages,such as the simple operation, simple process and so on。

Keywords: grapheme; adsorption;Mn2＋；graphene oxi                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

目录

第一章 绪论