Non-enzymatic electrochemical glucose sensing by Cu2O octahedrons: elucidating the protein adsorption signature
| Autor: | Soumyadipta Rakshit, Srabanti Ghosh, Subhash Chandra Bhattacharya, Rimi Roy |
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| Rok vydání: | 2021 |
| Předmět: |
Low protein
Chemistry Inorganic chemistry 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Ascorbic acid 01 natural sciences Catalysis Amperometry 0104 chemical sciences Adsorption Dynamic light scattering Materials Chemistry Zeta potential 0210 nano-technology Biosensor Protein adsorption |
| Zdroj: | New Journal of Chemistry. 45:628-637 |
| ISSN: | 1369-9261 1144-0546 |
| Popis: | A facile solution based chemical route has been developed for the synthesis of cuprous oxide (Cu2O) octahedrons employing polyvinylpyrrolidone (PVP ∼ 10k) at a relatively low temperature (50 °C) in aqueous medium and their response towards electrochemical non-enzymatic glucose sensing has been precisely investigated. The amperometric analysis reveals two calibration ranges (0.1 μM–1 mM and 1–7 mM) for the modified electrodes, with an excellent glucose specific selectivity over other interfering materials like sucrose, fructose, ascorbic acid (AA) and dopamine (DA). Careful analysis of the amperometric outcomes unveils a low limit of detection (LOD) of 0.96 μM (S/N = 3) along with exceptionally good stability and repeatability. Furthermore, the octahedral Cu2O modified electrodes exhibit a fast response time (∼1.5 s) with acceptable sensitivity and are found to be exceedingly reliable for the real time analysis of human serum samples (relative error |
| Databáze: | OpenAIRE |
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