| 碳纳米管/聚二烯丙基二甲基氯化铵/磷钼酸复合膜的组装及其在溴酸盐检测中的应用 |
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| 引用本文： | 沈晓芳,陈沁,庞月红,崔燕,钱和.碳纳米管/聚二烯丙基二甲基氯化铵/磷钼酸复合膜的组装及其在溴酸盐检测中的应用[J].中国科学:化学,2011(7):1184-1189. |
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| 作者姓名： | 沈晓芳 陈沁 庞月红 崔燕 钱和 |
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| 作者单位： | 食品科学与技术国家重点实验室江南大学食品学院; |
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| 基金项目： | 国家自然科学基金(21005032); 中央高校基本科研业务费专项资金(JUSRP10918&JUSRP10920); 江南大学食品科学与技术国家重点实验室开放课题(SKLF-KF200910)资助项目 |
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| 摘 要： | 通过静电层层组装技术在玻碳(GC)电极表面制备{多壁碳纳米管(MWCNT)/聚二烯丙基二甲基氯化铵(PDDA)}n多层膜,并采用循环伏安法在多层膜的表面电化学修饰一层磷钼酸(PMo12)膜,构筑GC/{MWCNT/PDDA}n-PMo12复合膜修饰电极.利用SEM对比观察{MWCNT/PDDA}n和{PDDA/MWCNT}n-PMo12的微观结构,并研究该复合膜修饰电极的电化学及其对溴酸盐(BrO3-)电催化还原性质.在此基础上研发一种基于GC/{MWCNT/PDDA}n-PMo12复合膜修饰电极的电流型BrO3-传感器,该传感器表现出明显增大的响应电流.在最优的实验条件下,采用电流时间曲线(i-t)法考察该复合膜修饰电极对BrO3-的安培响应.实验结果表明,该传感器在BrO3-浓度为50～400nmol/L的范围内具有良好的线性关系,相关系数R2为0.9950,响应时间为1.53s,检出限为20nmol/L,灵敏度为13.81mA(mmol/L)-1cm-2.
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| 关 键 词： | 碳纳米管 磷钼酸 静电层层组装 溴酸盐 电化学传感器 |
Assembly of carbon nanotube/poly(diallyldimethylammonium chloride)/phosphomolybdic acid composite film and its application in bromate sensor |
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| SHEN XiaoFang,CHEN Qin,PANG YueHong,CUI Yan & QIAN He State Key Laboratory of Food Science , Technology,School of Food Science , Technology,Jiangnan University,Wuxi ,China.Assembly of carbon nanotube/poly(diallyldimethylammonium chloride)/phosphomolybdic acid composite film and its application in bromate sensor[J].Scientia Sinica Chimica,2011(7):1184-1189. |
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| Authors: | SHEN XiaoFang CHEN Qin PANG YueHong CUI Yan & QIAN He State Key Laboratory of Food Science Technology School of Food Science Technology Jiangnan University Wuxi China |
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| Institution: | SHEN XiaoFang,CHEN Qin,PANG YueHong,CUI Yan & QIAN He State Key Laboratory of Food Science and Technology,School of Food Science and Technology,Jiangnan University,Wuxi 214122,China |
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| Abstract: | Electrostatic layer-by-layer assembly technique was used to prepared a multiwalled carbon nanotubes(MWCNT)/poly(diallyldimethylammonium chloride) (PDDA) multilayer onto a glassy carbon electrode (GC).{PDDA/MWCNT}n-PMo12 composite films modified GC were constructed via cyclic voltammograms of phosphomolybdic acid (PMo12) onto {MWCNT/PDDA}n/GC.The microstructure of {MWCNT/PDDA} n and {PDDA/MWCNT}n-PMo12 were characterized by SEM.The electrochemical and electrocatalytic behaviors of GC/{MWCNT/PDDA}n-PMo12 modi... |
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| Keywords: | carbon nanotube phosphomolybdic acid electrostatic layer-by-layer assemble bromate electrochemical sensor |
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