A sensitive nonenzymatic hydrogen peroxide sensor based on Fe3O4–Fe2O3 nanocomposites
| Autor: | Junping Li, Peilong Wang, Guilong Wang, Yue Wang, Guang Sheng Cao, Xin Li |
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| Rok vydání: | 2015 |
| Předmět: |
Diffraction
Detection limit Nanocomposite Materials science Scanning electron microscope Analytical chemistry Electrochemistry law.invention chemistry.chemical_compound chemistry Mechanics of Materials Transmission electron microscopy law General Materials Science Calcination Hydrogen peroxide Nuclear chemistry |
| Zdroj: | Bulletin of Materials Science. 38:163-167 |
| ISSN: | 0973-7669 0250-4707 |
| DOI: | 10.1007/s12034-014-0803-x |
| Popis: | The Fe3O4–Fe2O3 nanocomposites were prepared by the co-precipitation method and followed by calcination process. The products were synthesized and characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray analysis. The obtained Fe3O4–Fe2O3 nanocomposites were then applied to study the electrocatalytic reduction of hydrogen peroxide (H2O2) in 0.01 M pH 7.0 phosphate buffer medium. Then the Fe3O4–Fe2O3 nanocomposites were used as active electrode material of electrochemical sensors for H2O2 detection The detection sensitivity of the sensor was 20.325 μA mM −1 , and the detection limit was estimated to be about 0.2 mM. |
| Databáze: | OpenAIRE |
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