Rationally designed f-MWCNT-coated bismuth molybdate (f-MWCNT@BMO) nanocomposites for the voltammetric detection of biomolecule dopamine in biological samples
| Autor: | Mohmed Ouladsmne, Shen-Ming Chen, Selvarasu Maheshwaran, Muthumariappan Akilarasan, Elayappan Tamilalagan, Najla AlMasoud, Yu-Feng Huang, Khamael M. Abualnaja |
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| Rok vydání: | 2021 |
| Předmět: |
Molybdenum
chemistry.chemical_classification Detection limit Nanocomposite Nanotubes Carbon Dopamine Biomolecule Reproducibility of Results chemistry.chemical_element Electrochemical Techniques Molybdate Nanocomposites Analytical Chemistry Bismuth chemistry.chemical_compound chemistry Limit of Detection Electrode Humans Differential pulse voltammetry Selectivity Electrodes Oxidation-Reduction Nuclear chemistry |
| Zdroj: | Microchimica Acta. 188 |
| ISSN: | 1436-5073 0026-3672 |
| DOI: | 10.1007/s00604-021-04978-9 |
| Popis: | Selective and sensitive dopamine (DPA) sensor was developed using hydrothermally prepared functionalized multi-walled carbon nanotube–coated bismuth molybdate (f-MWCNT@BMO). The f-MWCNT@BMO-reinforced electrode exhibited an outstanding electrocatalytic activity towards DPA oxidation. The nanocomposite-reinforced electrode displayed a rapid response towards DPA sensing and possessed the minimized potential of (Epa + 0.285 V vs Ag/AgCl) in 0.1 M phosphate buffer (PB). The electrochemical results of prepared sensors were analyzed using the differential pulse voltammetry method (DPV). As a result, the f-MWCNT@BMO-reinforced electrode exhibited a widelinear range of 10 nM - 814 μM with a very low detection limit of 3.4 nM towards DPA oxidation. The developed sensor shows excellent selectivity in presence of similar functional group biomolecules. The detection of DPA in real samples was evaluated in human serum, as the results of the proposed sensor possessed good recoveries. |
| Databáze: | OpenAIRE |
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