Synthesis of mesoporous multiwall ZnO nanotubes by replicating silk and application for enzymatic biosensor

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• 作者：Minggang Zhao ; Zhenglong Li ; Ziqi Han ; Ke Wang ; Yu Zhou ; Jingyun Huang ; Zhizhen Ye
• 关键词：ZnO ; Mesoporous multiwall nanotubes ; Glucose oxidase ; Electrochemical biosensor
• 刊名：Biosensors and Bioelectronics
• 出版年：2013
• 出版时间：15 November, 2013
• 年：2013
• 卷：49
• 期：Complete
• 页码：318-322
• 全文大小：1384 K

文摘

A facial biotemplate-directed synthetic route for fabricating mesoporous multiwall ZnO nanotubes (ZnO-MMNTs) was proposed. Owing to the mesoporous multiwall based matrix, one dimensional (1D) tubes based channels and high isoelectric point (IEP), the prepared ZnO-MMNTs are wonderful platform to immobilize glucose oxidase (GOx) for glucose biosensing. Scale-adaptive cells are constructed to hold enzymes molecules, maintain enzymatic activity and keep stability. The prepared enzymatic electrode (chitosan/GOx/ZnO/Au) exhibits high sensitivity (47.2 ¦ÌA mM^?1 cm^?2), very fast response (<2 s), quite low (1.09 mM), excellent selectivity and stability. Therefore, ZnO-MMNTs are promising material for enzyme assembly and other biological applications.