Electrospun CuO/NiO composite nanofibers for sensitive and selective non-enzymatic nitrite sensors
| Autor: | G. Amala, Jayachandran Saravanan, Helen Annal Therese, G. Gnana kumar, Ramachandran Ramasamy |
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| Rok vydání: | 2017 |
| Předmět: |
Chemistry
Composite number Inorganic chemistry Non-blocking I/O 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Catalysis Amperometry 0104 chemical sciences Electrochemical gas sensor chemistry.chemical_compound Nanofiber Materials Chemistry Nitrite 0210 nano-technology Monoclinic crystal system |
| Zdroj: | New Journal of Chemistry. 41:14766-14771 |
| ISSN: | 1369-9261 1144-0546 |
| Popis: | A non-enzymatic electrochemical sensor based on the use of nanofibrous CuO/NiO as a catalytic probe was developed for the effective sensing of nitrite. One dimensional and strongly interconnected nanofibers with uniformly developed ultrafine nanograins were observed for the CuO/NiO composite nanofibers. The monoclinic crystalline structure of the CuO nanofibers was preserved even after composite formation with NiO. The electrocatalytic activity of the prepared CuO/NiO nanofibers toward nitrite oxidation was investigated under neutral conditions. When utilized as a potent non-enzymatic sensor, the CuO/NiO nanofibers showed excellent amperometric performance, including a lower sensing limit, soaring sensitivity, and a broad linear array, respectively, of 0.5 μM, 282.72 μA mM−1 cm−2, and 0.001–5 mM. Furthermore, the remarkable selectivity and stability achieved for the as-fabricated sensors endorse its real sample analysis with human serum. Thus, these findings overcome the hurdles of existing non-enzymatic nitrite sensor probes and open up new possibilities in exploring an efficient and economical approach toward the development of electrochemical probes for nitrite detection. |
| Databáze: | OpenAIRE |
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