碳基质新型离子印迹聚合物的制备及离子识别性能研究Synthesis of Ion Imprinted Polymers with Carbon Nanotubes and their Ion Recognition Performance
郭明,王春歌,姚珊珊,马燕飞,李铭慧,金春德
摘要(Abstract):
溶胶-凝胶法制备二氧化钛/羧基碳纳米管(Ti O2/MWNTs-COOH),接枝壳聚糖并通过乙烯基三甲氧基硅烷化反应制备生物碳基质功能单体-乙烯基碳纳米管双功能基壳聚糖。利用Cu2+为模板离子,通过交联反应制备生物基质新型离子印迹聚合物(Novel ion imprinted polymer on biological carbon matrix,NIIPs-BCM)。傅里叶变换红外光谱(FT-IR)、固体核磁共振波谱(CP/MAS 13C-NMR)和扫描电镜(SEM)对中间产物和NIIPs-BCM进行结构表征,表观形貌分析法考察生物降解性能并利用同步热分析仪(DSC-TG)进行热稳定性测试,原子吸收光谱仪(AAS)进行离子印迹聚合物识别性能研究。结果表明,成功制备了对金属Cu2+具有选择性吸附的NIIPs-BCM。NIIPs-BCM具有显著生物降解性,热稳定性分析结果表明NIIPs-BCM具有良好的热稳定性,热失重率为67%。原子吸收法分析NIIPs-BCM的离子识别性能表明,其对Cu2+的特异识别性明显优于非离子印迹聚合物(Non-novel ion imprinted polymer on biological carbon matrix,NNIIPs-BCM),识别理论符合静态等温吸附方程。
关键词(KeyWords): 离子印迹聚合物;碳纳米管;热性能;生物降解;离子识别性能
基金项目(Foundation): 浙江省自然科学基金项目(Y5090179,LY14E030016);; 浙江省林业工程一级重中之重学科开放基金项目(2014LYGCZ017)
作者(Author): 郭明,王春歌,姚珊珊,马燕飞,李铭慧,金春德
参考文献(References):
- [1]Yang Y Z,Liu X G,Guo M C,et al.Molecularly imprinted polymer on carbonmicrosphere surfaces for adsorbing dibenzothiophene[J].Colloids and Surfaces A:Physicochem.Eng.Aspects,2011,377(1-3):379-385.
- [2]Kang Y F,Duan W P,Li Y,et al.Molecularly imprinted polymers of allyl-β-cyclodextrin and methacrylic acid for the solid-phase extraction of phthalate[J].Carbohydrate Polymers,2012,88(2):459-464.
- [3]LIU Yuxing(刘雨星),JIAN Guiqin(菅桂芹),HE Xiwen(何锡文),et al.Preparation and application of core-shell structural carbon nanotubes-molecularly imprinted composite material for determination of nafcillin in egg samples(核壳式碳纳米管一萘夫西林分子印迹聚合物的制备及应用)[J].Anal Chem(分析化学),2013,41(2):161-166.
- [4]Qiu H M,Fan L L,Li X J,et al.Determination sulfamethoxazole based chemiluminescence and chitosan/grapheme oxidemolecularly imprinted polymers[J].Carbohydrate Polymers,2013,92(1):394-399.
- [5]Yang Z,Yang H,Jiang Z W,et al.Flocculation of both anionic and cationic dyes in aqueous solutions by the amphoteric grafting flocculant carboxymethyl chitosan-graft-polyacrylamide[J].Journal of Hazardous Materials,2013,254(255):36-45.
- [6]Dai C L,Liu C S,Wei J,et al.Molecular imprinted macroporous chitosan coated mesoporous silica xerogels for hemorrhage control[J].Biomaterials,2010,31(30):7620-7630.
- [7]Liang D,Gao J,Sun H,et al.Selective oxidation of glycerol with oxygen in a base-free aqueous solution over MWNTs supported Pt catalysts[J].Applied Catalysis B:Environmental,2011,106(3-4):423-432.
- [8]Kim B C,Kim S J,Chung J K.Charge storge in carbon nanotube-Ti O2 hybrid nanoparticles[J].Synthetic Metals,2012,162(7-8):650-654.
- [9]Ren C J,Qiu W,Chen Y Q.Physicochemical properties and photocatalytic activity of the Ti O2/Si O2 prepared by precipitation method[J].Separation and Purification Technology,2013,107:264-272.
- [10]Kean T,Thanou M.Biodegradation,biodistribution and toxicity of chitosan[J].Adv Drug Deliver Rev,2010,62(1):3-11.
- [11]Rao G P,Lu C,Su F.Sorption of divalent metalions from aqueous solution by carbon nanotubes:A review[J].Separation and Purification Technology,2007,58(1):224-231.