Adsorption behavior of cross-linked chitosan modified by graphene oxide for Cu(Ⅱ) removal

作者：YANG Yan; WU Wen qin; ZHOU Hai hui; HUANG Zhong yuan; YE Ting ting; LIU Rui; KUANG Ya fei; College of Chemistry and Chemical Engineering Hunan University; College of Materials Science and Engineering Central South University of Forestry and Technology

来源：Journal of Central South University, 2014, (07): 2826-2831.

• chitosan
• graphene oxide
• adsorption
• Cu(Ⅱ)

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).

• 出版日期2014-7-15
• 单位中南大学