A novel non-enzymatic hydrogen peroxide sensor based on Mn-nitrilotriacetate acid (Mn-NTA) nanowires

Talanta. 2010 Apr 15;81(1-2):727-31. doi: 10.1016/j.talanta.2009.12.057. Epub 2010 Jan 11.

Abstract

A novel non-enzymatic hydrogen peroxide sensor was realized from Mn-nitrilotriacetate acid (Mn-NTA) nanowires, which were successfully fabricated via a facile hydrothermal route. Cyclic voltammetry (CV) revealed that the Mn-NTA nanowires exhibited direct electrocatalytic activity for the oxidation of H(2)O(2) in phosphate buffer solution. The sensor showed linear response to H(2)O(2) at the concentrations range from 5 x 10(-6)M to 2.5 x 10(-3)M with a detection limit of 2 x 10(-7)M. The sensitivity was up to 78.9 microA mM(-1)cm(-2). These results indicated that the Mn-NTA nanowires were promising in realizing non-enzymatic H(2)O(2) detection.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Chemistry Techniques, Analytical / instrumentation*
  • Electrochemistry
  • Hydrogen Peroxide / analysis*
  • Hydrogen Peroxide / chemistry
  • Manganese / chemistry*
  • Nanowires / chemistry*
  • Nitrilotriacetic Acid / chemistry*
  • Organometallic Compounds / chemistry*
  • Oxidation-Reduction

Substances

  • Organometallic Compounds
  • Manganese
  • Hydrogen Peroxide
  • Nitrilotriacetic Acid