• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Electroanalysis >Direct electrochemistry of hemoglobin immobilized on carhon-coated iron nanoparticles for amperometric detection of hydrogen peroxide
【24h】

Direct electrochemistry of hemoglobin immobilized on carhon-coated iron nanoparticles for amperometric detection of hydrogen peroxide

机译：固定在碳素包覆的铁纳米颗粒上的血红蛋白直接电化学用于安培检测过氧化氢

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A novel method for preparation of hydrogen peroxide biosensor was presented based on immobilization of hemoglobin (Hb) on carbon-coated iron nanoparticles (CIN). CIN was firstly dispersed in a chitosan solution and cast onto a glassy carbon electrode to form a CIN/chitosan composite film modified electrode. Hb was then immobilized onto the composite film with the cross-linking of glutaraldehyde. The immobilized Hb displayed a pair of stable and quasireversible redox peaks and excellent electrocatalytic reduction of hydrogen peroxide (H2O2), which leading to an unmediated biosensor for H2O2. The electrocatalytic response exhibited a linear dependence on H2O2 concentration in a wide range from 3.1 mu M to 4.0 mM with a detection limit of 1.2 mu M (S/N = 3). The designed biosensor exhibited acceptable stability, long-term life and good reproducibility.
机译：提出了一种基于血红蛋白（Hb）固定在碳包覆铁纳米粒子（CIN）上的过氧化氢生物传感器的制备方法。首先将CIN分散在壳聚糖溶液中，并浇铸到玻璃碳电极上，以形成CIN /壳聚糖复合膜修饰电极。然后通过戊二醛的交联将Hb固定在复合膜上。固定化的Hb表现出一对稳定且准可逆的氧化还原峰以及过氧化氢（H2O2）的出色电催化还原，这导致了H2O2的无介导生物传感器。电催化响应在3.1μM至4.0 mM的宽范围内显示出对H2O2浓度的线性依赖性，检测极限为1.2μM（S / N = 3）。设计的生物传感器表现出可接受的稳定性，长期寿命和良好的可重复性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

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