| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 600157 | Colloids and Surfaces B: Biointerfaces | 2013 | 8 Pages |
Magnetic (Fe2O3) mobile crystalline material-41 (MCM-41) was prepared and characterized using transmission electron microscopy (TEM) and nitrogen adsorption–desorption techniques. Due to the large surface area (1213 m2 g−1) and remarkable electrocatalytic properties of MCM-41-Fe2O3, the MCM-41-Fe2O3 modified glassy carbon electrode (MCM-41-Fe2O3/GCE) exhibits potent electrocatalytic activity toward the electro-oxidation of amino acids. MCM-41-Fe2O3/GCE brings new capabilities for electrochemical sensing by combining the advantages of Fe2O3 magnetic nanoparticles and MCM-41 with very large surface area. Cyclic voltammetry, hydrodynamic amperometry and flow injection analysis used to determination of amino acids at higher concentration range. Fast response time, excellent catalytic activity, and ease of preparation are the advantages of the proposed amino acid sensor.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Electrooxidation of amino acids was performed using MCM-41-Fe3O4. ► Modified electrode shows new advantages as an amino acids sensor. ► Excellent electrocatalytic activity was obtained for amino acids oxidation. ► The response of the modified electrode is linear over the entire 100–1000 nM.
