• 文献标题:   Electrochemically Prepared Three-dimensional Porous Nitrogen-doped Graphene Modified Electrode for Non-enzymatic Detection of Hydrogen Peroxide
  • 文献类型:   Article
  • 作  者:   QI YM, BAI J, DING XT, ZHANG HM
  • 作者关键词:   nitrogendoped graphene, electrochemical detection, nonenzymatic, hydrogen peroxide
  • 出版物名称:   ELECTROANALYSIS
  • ISSN:   1040-0397 EI 1521-4109
  • 通讯作者地址:   Beijing Inst Technol
  • 被引频次:   7
  • DOI:   10.1002/elan.201700142
  • 出版年:   2017

▎ 摘  要

A facile and green electrochemical method for the fabrication of three-dimensional porous nitrogen-doped graphene (3DNG) modified electrode was reported. This method embraces two consecutive steps: First, 3D graphene/polypyrrole (ERGO/PPy) composite was prepared by electrochemical co-deposition of graphene and polypyrrole on a gold foil. Subsequently, the ERGO/PPy composite modified gold electrode was annealed at high temperature. Thus 3DNG modified electrode was obtained. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy were used to characterize the structure and morphology of the electrode. The electrode exhibits excellent electroanalytical performance for the reduction of hydrogen peroxide (H2O2). By linear sweep voltammetric measurement, the cathodic peak current was linearly proportional to H2O2 concentration in the range from 0.6M to 2.1mM with a sensitivity of 1.0A M-1 cm(-2). The detection limit was ascertained to be 0.3M. The anti-interference ability, reproducibility and stability of the electrode were carried out and the electrode was applied to the detection of H2O2 in serum sample with recoveries from 98.4% to 103.2%.