为了实现海水中2,4,6-三氯苯酚(2,4,6-TCP)的选择性吸附和去除,采用超声协助悬浮聚合法以2,4,6-三氯苯酚为模板制备了分子印迹氨基功能化纳米Fe3O4高分子磁性复合材料(nFe3O4@MIPNH2-polymer).通过元素分析(EA)、X射线衍射(XRD)、傅里叶变换红外(FTIR)光谱分析、透射电子显微镜(TEM)、振动样品磁强计(VSM)等手段对nFe3O4@MIPNH2-polymer的组成、结构、形貌、磁性等进行表征,并研究了其应用于吸附和去除海水中2,4,6-三氯苯酚(2,4,6-TCP)污染物的性能.结果表明:合成的nFe3O4@MIPNH2-polymer平均粒径约为800 nm,饱和磁化强度为32.6 emu·g-1;水溶液中2,4,6-TCP的饱和吸附量为105.26 mg· g-1,高于非分子印迹氨基功能化纳米Fe3 O4高分子磁性复合材料(nFe3O4@NH2-polymer)的饱和吸附量(76.92 mg·g-1),nFe3O4@MIPN H2-polymer对2,4,6-TCP的等温吸附线大体符合Langmuir模型.吸附热力学研究表明,nFe3O4@MIPNH2-polymer对2,4,6-TCP的吸附过程是自发的吸热熵增过程;吸附过程可在5 min内达到平衡,动力学数据和准二级动力学模型符合较好;其吸附过程去除2,4,6-TCP的活化能为78.0 kJ·mol-1.海水中的共存物质对吸附2,4,6-TCP几乎无干扰,nFe3O4@MIPNH2-polymer经洗脱后可以循环使用5次以上.nFe3O4@MIPNH2-polymer能高选择性地有效去除海水中的2,4,6-TCP.
参考文献
| [1] | Meng, J.;Shi, C.;Wei, B.;Yu, W.;Deng, C.;Zhang, X..Preparation of Fe_3O_4@C@PANI magnetic microspheres for the extraction and analysis of phenolic compounds in water samples by gas chromatography-mass spectrometry[J].Journal of chromatography, A: Including electrophoresis and other separation methods,201120(20):2841-2847. |
| [2] | Wensheng Lu;Yuhua Shen;Anjian Xie.Novel Bifuncitonal One-Dimensional Fe3O4/Se Nanocomposites via Facile Green Synthesis[J].The journal of physical chemistry, C. Nanomaterials and interfaces,201011(11):4846-4851. |
| [3] | Caruso F..Nanoengineering of particle surfaces [Review][J].Advanced Materials,20011(1):11-1+. |
| [4] | 于文广;张同来;张建国;郭金玉;吴瑞凤.纳米四氧化三铁（Fe3O4）的制备和形貌[J].化学进展,2007(6):884-892. |
| [5] | Shen HY;Zhu Y;Wen XE;Zhuang YM.Preparation of Fe3O4-C18 nano-magnetic composite materials and their cleanup properties for organophosphorous pesticides[J].Analytical and bioanalytical chemistry,20076(6):2227-2237. |
| [6] | 陈君良;姚屠鹏;朱宏亮;潘胜东;沈昊宇.巯基功能化纳米Fe3O4-高分子磁性复合材料的合成及其对水中亚甲基蓝的吸附作用[J].复合材料学报,2014(2):323-330. |
| [7] | 沈昊宇;赵永纲;胡美琴;夏清华.高分子聚羧酸-纳米Fe3O4磁性复合颗粒的制备及其对水中对羟基苯甲酸酯类化合物的吸附作用[J].复合材料学报,2009(4):68-73. |
| [8] | Pan, S.;Shen, H.;Xu, Q.;Luo, J.;Hu, M..Surface mercapto engineered magnetic Fe_3O_4 nanoadsorbent for the removal of mercury from aqueous solutions[J].Journal of Colloid and Interface Science,20121(1):204-212. |
| [9] | Zhao Yong-Gang;Shen Hao-Yu;Pan Sheng-Dong;Hu Mei-Qin.Synthesis, characterization and properties of ethylenediamine-functionalized Fe_3O_4 magnetic polymers for removal of Cr(VI) in wastewater[J].Journal of hazardous materials,20101/3(1/3):295-302. |
| [10] | Shengdong Pan;Yun Zhang;Haoyu Shen.An intensive study on the magnetic effect of mercapto-functionalized nano-magnetic Fe3O4 polymers and their adsorption mechanism for the removal of Hg(II) from aqueous solution[J].Chemical engineering journal,2012:564-574. |
| [11] | Adsorption of 2,4,6-trichlorophenol by multi-walled carbon nanotubes as affected by Cu(Ⅱ)[J].Water research: A journal of the international water association,20099(9):2409-2418. |
| [12] | Machawe M. Motsa;Justice M. Thwala;Titus A. M. Msagati;Bhekie B. Mamba.Adsorption of 2,4,6-Trichlorophenol and ortho-Nitrophenol from Aqueous Media Using Surfactant-Modified Clinoptilolite-Polypropylene Hollow Fibre Composites[J].Water, air and soil pollution,20124(4):1555-1569. |
| [13] | Jinlin Fan;Jian Zhang;Chenglu Zhang.Adsorption of 2,4,6-trichlorophenol from aqueous solution onto activated carbon derived from loosestrife[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20112/3(2/3):139-146. |
| [14] | Li Wang;Jian Zhang;Ran Zhao.Adsorption of 2,4-dichlorophenol on Mn-modified activated carbon prepared from Polygonum orientate Linn[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20111/3(1/3):175-181. |
| [15] | 费正皓;刘总堂;刘福强;李爱民;陈金龙;张全兴.化学修饰的吸附树脂对2,4,6-三氯苯酚的吸附研究[J].化学学报,2007(15):1515-1520. |
| [16] | Lin Y;Shi Y;Jiang M;Jin Y;Peng Y;Lu B;Dai K.Removal of phenolic estrogen pollutants from different sources of water using molecularly imprinted polymeric microspheres[J].Environmental Pollution,20082(2):483-491. |
| [17] | 张蕴;奚晓青;许姗妮;周俊晨;周津金;徐启宏;沈昊宇.氨基功能化纳米复合材料对磷酸盐的吸附研究[J].化学学报,2012(17):1839-1846. |
| [18] | Haoyu Shen;Junliang Chen;Huofeng Dai.New Insights into the Sorption and Detoxification of Chromium(VI) by Tetraethylenepentamine Functionalized Nanosized Magnetic Polymer Adsorbents: Mechanism and pH Effect[J].Industrial & Engineering Chemistry Research,201336(36):12723-12732. |
| [19] | Yong-Gang Zhao;Xiao-Hong Chen;Sheng-Dong Pan.Self-assembly of a surface bisphenol A-imprinted core-shell nanoring amino-functionalized superparamagnetic polymer[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201338(38):11648-11658. |
| [20] | Lincheng Zhou;Liqin Ji;Peng-Cheng Ma;Yanming Shao;He Zhang;Weijie Gao;Yanfeng Li.Development of carbon nanotubes/CoFe_2O_4 magnetic hybrid material for removal of tetrabromobisphenol A and Pb(Ⅱ)[J].Journal of hazardous materials,2014Jan.30(Jan.30):104-114. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%