功能化磁性Fe_3O_4纳米粒子用于含Cu^(2+)废水的净化  

Purification of waste water containing Cu^(2+) using functionalized magnetic Fe_3O_4 nanoparticles

作　　者：刘安康[1] 柳越[1] 何涛[1,2] 李雪梅[2] 

机构地区：[1]南京工业大学化学与化工学院材料化学工程国家重点实验室,江苏南京210009 [2]中国科学院上海高等研究院,上海201203

出　　处：《南京工业大学学报（自然科学版）》2012年第6期97-101,共5页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB23402;2012CB720903);国家自然科学基金资助项目(20976083;21176119);科技部中以战略合作资助项目(201001)

摘　　要：采用共沉淀法制备超顺磁性Fe3O4纳米粒子(SPION),并通过硅烷化在SPION粒子表面引入3-氨丙基三乙氧基硅烷(APTES),制得氨基化磁性纳米粒子(Fe3O4-NH2),比较改性前后SPION对于重金属离子Cu2+的吸附,分别考察吸附溶液的pH和Cu2+初始质量浓度(ρ)对吸附效果的影响。结果表明:吸附量均随溶液pH和ρ的升高而增加,在pH为5时达到最大吸附量,ρ为5 g/L时均达到吸附平衡,Fe3O4和Fe3O4-NH2吸附量分别为12.49和103.41 mg/g。Superparamagnetic iron oxide nanoparticle（SPION） was prepared by co-precipitation.Functionalized magnetic（Fe3O4-NH2） was obtained by silanization of the SPION with（3-aminopropyl）triethoxysilane（APTES）.Both Fe3 O4 and Fe3 O4-NH2 nanoparticles were tested for removal of Cu2＋ from waste water,and effects of pH and initial concentration（ρ） of Cu2＋ solution on adsorption efficiency were investigated.The results showed that the adsorption capacity increased with pH and ρ of the solution and the capacity reached the maximum when pH was 5.Adsorption equilibrium was obtained on a concentration of 5 g/L,which were 12.49 mg/g and 103.41 mg/g for Fe3O4 and Fe3O4-NH2.

关 键 词：FE3O4 APTES 吸附 CU2+ 

分 类 号：O646.8[理学—物理化学] X703.1[理学—化学]