• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Nanomaterials >The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films
【2h】

The Development of Non-Enzymatic Glucose Biosensors Based on Electrochemically Prepared Polypyrrole–Chitosan–Titanium Dioxide Nanocomposite Films

机译：电化学制备聚吡咯-壳聚糖-二氧化钛纳米复合膜的非酶促葡萄糖生物传感器的研制

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performance of a modified electrode of nanocomposite films consisting of polypyrrole–chitosan–titanium dioxide (Ppy-CS-TiO2) has been explored for the developing a non-enzymatic glucose biosensors. The synergy effect of TiO2 nanoparticles (NPs) and conducting polymer on the current responses of the electrode resulted in greater sensitivity. The incorporation of TiO2 NPs in the nanocomposite films was confirmed by X-ray photoelectron spectroscopy (XPS) spectra. FE-SEM and HR-TEM provided more evidence for the presence of TiO2 in the Ppy-CS structure. Glucose biosensing properties were determined by amperommetry and cyclic voltammetry (CV). The interfacial properties of nanocomposite electrodes were studied by electrochemical impedance spectroscopy (EIS). The developed biosensors showed good sensitivity over a linear range of 1–14 mM with a detection limit of 614 μM for glucose. The modified electrode with Ppy-CS nanocomposite also exhibited good selectivity and long-term stability with no interference effect. The Ppy-CS-TiO2 nanocomposites films presented high electron transfer kinetics. This work shows the role of nanomaterials in electrochemical biosensors and describes the process of their homogeneous distribution in composite films by a one-step electrochemical process, where all components are taken in a single solution in the electrochemical cell.
机译：为了开发非酶促葡萄糖生物传感器，已经探索了由聚吡咯-壳聚糖-二氧化钛（Ppy-CS-TiO2）组成的纳米复合膜修饰电极的性能。 TiO2纳米粒子（NPs）和导电聚合物对电极电流响应的协同作用导致灵敏度更高。通过X射线光电子能谱（XPS）光谱证实了TiO2 NPs在纳米复合膜中的结合。 FE-SEM和HR-TEM为Ppy-CS结构中存在TiO2提供了更多证据。通过安培法和循环伏安法（CV）测定葡萄糖的生物传感特性。通过电化学阻抗谱（EIS）研究了纳米复合电极的界面特性。先进的生物传感器在1-14 mM的线性范围内显示出良好的灵敏度，葡萄糖的检测极限为614μM。具有Ppy-CS纳米复合材料的修饰电极还表现出良好的选择性和长期稳定性，没有干扰作用。 Ppy-CS-TiO2纳米复合材料薄膜具有很高的电子转移动力学。这项工作展示了纳米材料在电化学生物传感器中的作用，并描述了通过一步电化学方法将纳米材料均匀分布在复合膜中的过程，其中所有成分均被收集在电化学电池的单一溶液中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号