本文开展了中空温敏分子印迹聚合物(HTMIPs)吸附溶液中四环素(TC)的实验研究,采用牺牲酵母模板法制备的中空硅球作为基质材料,以TC为模板分子,N-异丙基丙烯酰胺为温敏单体,通过沉淀聚合法合成了中空温敏型TC分子的印迹聚合物,利用FT-IR和SEM等方法对HTMIPs的理化性能进行表征,通过静态吸附实验考察HTMIPs对TC的吸附性能.结果表明,HTMIPs对模板分子TC在pH值为5.0时,35℃条件下吸附容量最大,约为72.05 μmol·g-1,表明该印迹吸附剂对TC具有良好的亲和性和选择吸附性.HTMIPs的等温吸附结果与Freundlich模型拟合更好,动力学吸附结果更符合准二级动力学吸附模型,表明HTMIPs对于TC分子的吸附主要是在非均匀表面共价键作用下的结果.同时,HTMIPs表现出良好的可重复利用性,5次重复吸附-解吸附后吸附量损失约6.64％.因此,所制备的中空温敏印迹聚合物在吸附分离环境水体中的抗生素方面有良好的实际应用前景.
In this paper,studies on the adsorption of tetracycline (TC) from aqueous solutions by hollow temperature-sensitive molecularly-imprinted polymers (HTMIPs) were carried out.HTMIPs were synthesized by precipitation polymerization,with hollow silica spheres as the matrix material prepared by sacrificial yeast-template method,TC as the template molecule,and N-isopropyl acrylamide as the temperature-sensitive monomer.FT-IR and SEM were applied to characterize the physical and chemical properties of the polymers.Static adsorption experiments were carried out to investigate the TC adsorption performance of HTMIPs.The results indicated that at pH 5.0 and 35 ℃,HTMIPs achieved the maximum adsorption amount of TC (about 72.05 μmol · g-1),and displayed high affinity and selectivity for TC.The isotherm better fitted the Freundlich model,while kinetics results were well described by the pseudo-second-order model,which suggested that the adsorption of TC was mainly controlled by covalent bonding interactions on the nonuniform surface.HTMIPs exhibited good regeneration capacity with only 6.64％ of loss adsorption capacity after 5 adsorption-desorption cycles.HTMIPs synthesized in this study have potential practical application to adsorption and separation of antibiotics from environmental water.
参考文献
| [1] | Zhao, Y.;Wang, Y..Measurement and correlation of solubility of Tetracycline hydrochloride in six organic solvents[J].The Journal of Chemical Thermodynamics,2013:9-13. |
| [2] | Suadrez B;Santos B;Simonet BM;Cardenas S;Valcarcel M.Solid-phase extraction-capillary electrophoresis-mass spectrometry for the determination of tetracyclines residues in surface water by using carbon nanotubes as sorbent material[J].Journal of chromatography, A: Including electrophoresis and other separation methods,20071(1):127-132. |
| [3] | Chico J;Meca S;Companyo R;Prat MD;Granados M.Restricted access materials for sample clean-up in the analysis of trace levels of tetracyclines by liquid chromatography Application to food and environmental analysis[J].Journal of chromatography, A: Including electrophoresis and other separation methods,20081/2(1/2):1-8. |
| [4] | Jara, CC;Fino, D;Specchia, V;Saracco, G;Spinelli, R.Electrochemical removal of antibiotics from wastewaters[J].Applied Catalysis. B, Environmental,200726(26):479-487. |
| [5] | Davor Dolar;Kresimir Kosutic;Martina Perisa.Photolysis of enrofloxacin and removal of its photodegradation products from water by reverse osmosis and nanofiltration membranes[J].Separation and Purification Technology,2013:1-8. |
| [6] | Yujun Song;Hongxiang Ou;Weibai Bian;Yunlei Zhang;Jianming Pan;Yan Liu;Weihong Huang.Ion-Imprinted Polymers Based on Hollow Silica with Yeasts as Sacrificial Supports for Sr~(2+) Selective Adsorption[J].Journal of inorganic and organometallic polymers and materials,20136(6):1325-1334. |
| [7] | Yoshimatsu K;Reimhult K;Krozer A;Mosbach K;Sode K;Ye L.Uniform molecularly imprinted microspheres and nanoparticles prepared by precipitation polymerization: The control of particle size suitable for different analytical applications[J].Analytica chimica acta,20071(1):112-121. |
| [8] | Bo Bai;Weisheng Guan;Ziyan Li;Gianluca Li Puma.Bio-template route for facile fabrication of Cd(OH)_2@yeast hybrid microspheres and their subsequent conversion to mesoporous CdO hollow microspheres[J].Materials Research Bulletin: An International Journal Reporting Research on Crystal Growth and Materials Preparation and Characterization,20111(1):26-31. |
| [9] | Michat Moritz;Marek Laniecki.SBA-15 mesoporous material modified with APTES as the carrier for 2-(3-benzoylphenyl)propionicacid[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201219(19):7523-7529. |
| [10] | Xian-Zheng Zhang;Ren-Xi Zhuo.Dynamic Properties of Temperature-Sensitive Poly(N-ixopropylacrylamide) Gel Cross-Linked through Siloxane Linkage[J].Langmuir: The ACS Journal of Surfaces and Colloids,20011(1):12-16. |
| [11] | Tao Wu;Zhishen Ge;Shiyong Liu.Fabrication of Thermoresponsive Cross-Linked Poly(/V-isopropylacrylamide) Nanocapsules and Silver Nanoparticle-Embedded Hybrid Capsules with Controlled Shell Thickness[J].Chemistry of Materials: A Publication of the American Chemistry Society,20119(9):2370-2380. |
| [12] | J. Rahchamani;H. Zawar Mousavi;M. Behzad.Adsorption of methyl violet from aqueous solution by polyacrylamide as an adsorbent: Isotherm and kinetic studies[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20112/3(2/3):256-260. |
| [13] | Ligang Chen;Xiaopan Zhang;Lei Sun.Fast and Selective Extraction of Sulfonamides from Honey Based on Magnetic Molecularly Imprinted Polymer[J].Journal of Agricultural and Food Chemistry,200921(21):10073-10080. |
| [14] | Youcai Zhan;Shanshan Nie;Xubiao Luo.Selective Separation of Cu(II) from Aqueous Solution with a Novel Cu(II) Surface Magnetic Ion-Imprinted Polymer[J].Industrial & Engineering Chemistry Research,201110(10):6355-6361. |
| [15] | Muggundha Raoov;Sharifah Mohamad;Mohd Radzi Abas.Removal of 2,4-dichlorophenol using cyclodextrin-ionic liquid polymer as a macroporous material: Characterization, adsorption isotherm, kinetic study, thermodynamics[J].Journal of hazardous materials,2013Dec.15 Pt.2(Dec.15 Pt.2):501-516. |
| [16] | Fuqiang An;Baojiao Gao.Adsorption characteristics of Cr(III) ionic imprinting polyamine on silica gel surface[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,20093(3):1390-1396. |
| [17] | Ou, Hongxiang;Chen, Qunhui;Pan, Jianming;Zhang, Yunlei;Huang, Yong;Qi, Xueyong.Selective removal of erythromycin by magnetic imprinted polymers synthesized from chitosan-stabilized Pickering emulsion[J].Journal of hazardous materials,2015May.30(May.30):28-37. |
| [18] | Xiao-hong Gu;Rong Xu;Gao-lin Yuan.Preparation of chlorogenic acid surface-imprinted magnetic nanoparticles and their usage in separation of Traditional Chinese Medicine[J].Analytica chimica acta,20101(1):64-70. |
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