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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Jędrzak, Artur
in Cooperation with on an Cooperation-Score of 37%
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Publications (4/4 displayed)
- 2024Ag, Cu, and Se-doped ultrasmall iron oxide colloidal gels: Revealing potential for photo/electrochemical applicationscitations
- 2019Dendrimer based theranostic nanostructures for combined chemo- and photothermal therapy of liver cancer cells in vitrocitations
- 2018Polydopamine grafted on an advanced Fe <inf>3</inf> O <inf>4</inf> /lignin hybrid material and its evaluation in biosensingcitations
- 2018Cyclodextrin-based magnetic nanoparticles for cancer therapycitations
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article
Polydopamine grafted on an advanced Fe <inf>3</inf> O <inf>4</inf> /lignin hybrid material and its evaluation in biosensing
Abstract
<p>In this paper, a synthesis and physicochemical characterization of a novel magnetite/lignin (Fe<sub>3</sub>O<sub>4</sub>/Lig) and magnetite/lignin/polydopamine (Fe<sub>3</sub>O<sub>4</sub>/Lig/PDA) materials are presented as a novel and effective platforms for an enzyme immobilization or biosensing application. The hybrid has interesting features like improved thermal and mechanical stability, excellent adhesion for inorganic and organic materials, transferability of electrons and photothermal properties. In order to characterize features of the materials, carried out Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), thermogravimetry analysis (TGA), electrokinetic potential (zeta), and magnetic measurements (SQUID). From the TEM analysis, magnetite/lignin hybrid is proved to be covered by a 2–3 nm uniform layer of polydopamine. In a further study, the resultant functional biomaterial Fe<sub>3</sub>O<sub>4</sub>/Lig and Fe<sub>3</sub>O<sub>4</sub>/Lig/PDA were used to immobilize glucose oxidase (GOx). The immobilization capacity of 26.92 and 29.24 mg/g were achieved for Fe<sub>3</sub>O<sub>4</sub>/Lig and Fe<sub>3</sub>O<sub>4</sub>/Lig/PDA, respectively. After mixing of the materials with graphite and ferrocene, the modified carbon paste electrodes CPE/Fe<sub>3</sub>O<sub>4</sub>/Lig/GOx/Fc and CPE/Fe<sub>3</sub>O<sub>4</sub>/Lig/PDA/GOx/Fc were obtained and they were tested for application as bioelectrochemical glucose sensing system. The linear ranges of CPE/Fe<sub>3</sub>O<sub>4</sub>/Lig/GOx/Fc and CPE/Fe<sub>3</sub>O<sub>4</sub>/Lig/PDA/GOx/Fc were from 0.5 to 4.5 and 0.5–9.0 mM glucose, respectively. The hysteresis loops of the prepared materials show no coercivity and remanent magnetizations at room temperature, exhibiting typical superparamagnetic behavior.</p>