| Title | Ruthenium/rhodium modified gold electrodes for the amperometric detection of hydrogen peroxide at low potentials |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2002 |
| Authors | Janasek, D., Vastarella W, Spohn U., Teuscher N., and Heilmann A. |
| Journal | Analytical and Bioanalytical Chemistry |
| Volume | 374 |
| Pagination | 1267-1273 |
| ISSN | 16182642 |
| Keywords | amperometric biosensor, Amperometric sensors, amperometry, article, cyclic potentiometry, Dissolution, electric activity, electrode, Electrodes, evaporation, flow injection analysis, flow rate, foil, Gold, Hydrogen Peroxide, Magnetron sputtering, Operational stability, oxidation, Oxygen, pH, radiofrequency, Reduction, Rhodium, Ruthenium, silver chloride, Transmission electron microscopy, vacuum |
| Abstract | Electrodes of ruthenium/rhodium deposited as thin layers on gold foils were investigated. Ruthenium layers were radio frequency “r.f.” magnetron sputtered and the rhodium layers were made by vacuum evaporation. Hydrogen peroxide could be detected using the cathodic reduction at potentials lower than +170 mV or the anodic oxidation at higher potentials. Under flow injection conditions, H2O2 was detected between 1 and 1000 μM at a potential of -100 mV and between 2 and 500 μM at a potential of +250 mV vs. Ag/AgCl/0.4 M KCl. The electrodes also showed high operational stability and selectivity against many electroactive substances. The selectivity against dissolved oxygen was investigated. |
| Notes | cited By 18 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036460572&doi=10.1007%2fs00216-002-1596-0&partnerID=40&md5=91e2bb448178eb0a794899ed835fd1ac |
| DOI | 10.1007/s00216-002-1596-0 |
| Citation Key | Janasek20021267 |
