功能化氧化石墨烯/纤维素共混复合材料对Pb^2＋吸附性能的研究  

Adsorption of Functionalized Graphene Oxide/Cellulose Hybrid Composite for Pb^(2+)

作　　者：赵阳[1] 赵玉真[1] 张永明[1] 王煜婷 苗宗成[1] ZHAO Yang;ZHAO Yu-zhen;ZHANG Yong-ming;WANG Yu-ting;MIAO Zong-cheng(Key Laboratory of Organic Polymer Photoelectric Materials,School of Science,Xijing University,Xi＇an 710123,China)

机构地区：[1]西京学院理学院,有机高分子光电材料重点实验室,陕西西安710123

出　　处：《纤维素科学与技术》2018年第3期39-44,共6页Journal of Cellulose Science and Technology

基　　金：国家自然科学基金面上项目(51673157);陕西省教育厅科研计划项目(15JK2188);西京学院科研基金(XJ170117)

摘　　要：采用改进的Hummers制备氧化石墨烯,对其进行功能化改性,制得功能化氧化石墨烯f-GO,再将功能化氧化石墨烯和纤维素共混,制备了具有较强吸附性能的功能化氧化石墨烯/纤维素复合材料(f-GO/CE)。以复合材料为载体,用静态法考察了pH值、吸附时间、初始浓度等因素对f-GO/CE吸附Pb^(2+)效果的影响。结果表明,吸附最适pH为6,吸附时间是150 min,最佳初始浓度为240 mg/L;同时f-GO/CE对Pb^(2+)的吸附行为符合Langmiur方程,吸附最大量可达到105mg/g,其对铅离子具有优异的吸附性能。The graphene oxide was prepared by modified Hummer method, and it was functionalized by （KH-550）, to obtain functionalized graphene oxide （f-GO）. The functionalized graphene oxide/cellulose hybrid composite （f-GO/CE composite） was prepared by functionalized graphene oxide and cellulose. The effects of pH, adsorption time and initial concentration on the adsorption behavior of f-GO/CE composite on Pb2＋ were discussed. The results showed that the optimum adsorption conditions were the value of pH was 6.0, adsorption time was 150 min and initial concentration was 240 mg/L. The fitting degree to adsorption process was high by Langmuir equation and the maximum adsorption of Pb2＋ was 105 mg/g. It can be conclude that this composite exhibit an excellent adsorption property for Pb2＋.

关 键 词：功能化氧化石墨烯 纤维素 复合材料 吸附性能 

分 类 号：O636[理学—高分子化学]