| Adsorption behavior of cross-linked chitosan modified by graphene oxide for Cu（Ⅱ） removal |
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| 引用本文： | 杨焰,;武文琴,;周海晖,;黄中原,;叶婷婷,;刘瑞,;旷亚非.Adsorption behavior of cross-linked chitosan modified by graphene oxide for Cu（Ⅱ） removal[J].中南工业大学学报(英文版),2014(7):2826-2831. |
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| 作者姓名： | 杨焰 ;武文琴 ;周海晖 ;黄中原 ;叶婷婷 ;刘瑞 ;旷亚非 |
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| 作者单位： | [1]College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China; [2]College of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China |
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| 基金项目： | Projects（51071067,21271069,J1210040,51238002） supported by the National Natural Science Foundation of China;Projects（2013GK3015,2012SK3170） supported by the Science and Technology Program of Hunan Province,China |
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| 摘 要： | Cross-linked chitosan（CS）,cross-linked chitosan/graphene（CS/RGO10） and cross-linked chitosan/graphene oxide（CS/GO10） were prepared as adsorbents for Cu（Ⅱ）.The effects of pH,contact time,adsorbent dosage and initial concentration of Cu（Ⅱ） on the adsorbing abilities of CS,CS/RGO10 and CS/GO10 to Cu（Ⅱ） were investigated.The results demonstrate that the adsorption capacities of CS/GO10 and CS/RGO10 are greater than that of CS,especially at pH 5.0 and the adsorption capacities are 202.5,150 and 137.5 mg/g,respectively.Their behaviors obey the Freundlich isotherm model very well.Additionally,CS/GO10 has the shortest time to achieve adsorption equilibrium among them and can be used as a perspective adsorbent for Cu（Ⅱ）.
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| 关 键 词： | 交联壳聚糖 氧化石墨 吸附行为 Freundlich方程 脱乙酰壳多糖 铜 接触时间 吸附容量 |
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