Electrostatic Assembly of Peptide Nanofiber鈥揃iomimetic Silver Nanowires onto Graphene for Electrochemical Sensors

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• 作者：Jinhui Wang ; Xiaojia Zhao ; Jingfeng Li ; Xiao Kuang ; Yuqian Fan ; Gang Wei ; Zhiqiang Su
• 刊名：ACS Macro Letters
• 出版年：2014
• 出版时间：June 17, 2014
• 年：2014
• 卷：3
• 期：6
• 页码：529-533
• 全文大小：298K
• 年卷期：v.3,no.6(June 17, 2014)
• ISSN：2161-1653

文摘

Biomacromolecules and their assemblies have the unique ability for biomimetic promotion of the formation of novel and functional nanomaterials. In this work, artificial peptide nanofibers were created with a special designed peptide molecule that contains complex motif sequences and then further metallized to synthesize nanofiber-based silver nanowires. A novel hybrid nanomaterial was obtained successfully by assembling the prepared silver nanowires on graphene nanosheets, and its potential application in nonenzymatic electrochemical H₂O₂ sensing was explored. This fabricated sensor based on graphene and silver nanowires exhibits high sensitivity and selectivity, low detection limit, and wide linear range for the determination of H₂O₂.