Hydrothermal synthesis of NiFe2O4 nanoparticles as an efficient electrocatalyst for the electrochemical detection of bisphenol A
| Autor: | Ganesh Kesavan, Li Heng Lin, Nandini Nataraj, Shen-Ming Chen |
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| Rok vydání: | 2020 |
| Předmět: |
Detection limit
Chemistry Nanoparticle Infrared spectroscopy 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Electrocatalyst 01 natural sciences Catalysis 0104 chemical sciences Dielectric spectroscopy Materials Chemistry Differential pulse voltammetry Cyclic voltammetry 0210 nano-technology Scherrer equation Nuclear chemistry |
| Zdroj: | New Journal of Chemistry. 44:7698-7707 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/d0nj00608d |
| Popis: | In this study, the sensitive and selective detection of bisphenol A (BPA) was achieved using a screen-printed carbon electrode (NFO/SPCE) modified with hydrothermally synthesized NiFe2O4 nanoparticles. The crystalline structure, surface morphology and electrical conductivity of the nanoparticles were analyzed using X-ray powder diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and electrochemical impedance spectroscopy (EIS). The as-prepared NiFe2O4 (NFO) nanoparticles exhibited a cubic crystal structure with an average crystallite size of 16 nm, as calculated using the Scherrer equation. As determined by cyclic voltammetry (CV), NFO/SPCE exhibited excellent electrochemical oxidation towards the detection of BPA. Subsequently, differential pulse voltammetry (DPV) studies revealed a rapid and stable response to the consecutive addition of BPA in a linear range of 0.02–12.5 μM with a lower limit of detection (LOD) of 6 nM, which was superior to previously reported results. In addition, the proposed method showed good stability and excellent repeatability for the determination of BPA in real samples. |
| Databáze: | OpenAIRE |
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