氧化石墨烯改性纤维素的制备及对Cu2＋吸附性能的研究

摘要

Graphite oxide was prepared by Hummers method and exfoliated into graphene oxide sheets through ultrasonic process .Then the graphene oxide sheets with alkali cellulose was blended to prepare the strong absorption composite material . Their structures and properties were characterized by infrared spectroscopy (IR) ,Zeta potential ,X -Ray Diffraction (XRD )and other analytical methods . This article discussed the absorbent input , pH value of solution , absorption time , absorption temperature and other factors which effect the performance of the adsorption of heavy metals .The result showed that the absorption of composite material had increments of 97 .41% when compared to the cellulose .%通过改进的Hummers法制备氧化石墨，进而超声剥离制备氧化石墨烯；再将氧化石墨烯悬浮液和碱性纤维素溶液混合制备强吸附性复合材料。使用红外光谱（IR）、Zeta电位仪、X射线衍射（XRD ）等测试仪器对材料的结构与性能进行表征。探讨了吸附剂用量、溶液p H、吸附时间和吸附温度等影响因素对C u2＋吸附性能的影响。结果表明：复合材料吸附能力较纤维素提高了97．41％。