Fabrication of a Fe2O3Nanoparticles Implantation-modified Electrode and its Applications in Electrochemical Sensing
| Autor: | Yingyi Fu, Jingzhe Li, Yanan Yu, Mengwei Yuan, Anna Fong, Jingbo Hu |
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| Rok vydání: | 2015 |
| Předmět: |
Detection limit
Materials science Inorganic chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Redox Amperometry 0104 chemical sciences Analytical Chemistry Catalysis Indium tin oxide Electrode 0210 nano-technology Biosensor |
| Zdroj: | Electroanalysis. 28:954-961 |
| ISSN: | 1040-0397 |
| DOI: | 10.1002/elan.201500585 |
| Popis: | A novel Fe2O3 modified indium tin oxide electrode (Fe2O3/ITO) was fabricated by iron ion-implantation method first, and then annealed at 300 °C. Fe2O3/ITO reveals good catalytic performance toward hydrogen peroxide (H2O2) in phosphate buffer solution due to the Fe(II)/Fe(III) redox couple. Amperometric response shows a linear dependency on the H2O2 concentration ranging up to 360 μM with a detection limit of 0.3 μM. Moreover, electrocatalytic activity based on rarely reported higher oxidation states of iron (tentatively assigned to Fe(IV)) was shown to allow the reliable detection of glucose and cysteine. The results show promising application potential of the proposed electrode. |
| Databáze: | OpenAIRE |
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