Novel Nanoarchitectures Based on Lignin Nanoparticles for Electrochemical Eco-Friendly Biosensing Development.
作者： Riccarda Antiochia , Cristina Tortolini , Raffaele Saladino , Riccardo Pofi , Mary Anna Venneri
DOI: 10.3390/NANO11030718
关键词: Cyclic voltammetry 、 Biosensor 、 Electrode 、 Glucose oxidase 、 Organosolv 、 Chemical engineering 、 Dielectric spectroscopy 、 Electrochemistry 、 Chemistry 、 Faradaic current
摘要: Novel nanoarchitectures based on lignin nanoparticles (LNPs) were designed and realized for electrochemical eco-friendly biosensing development. Two types of utilized the modification a gold bare electrode, namely organosolv (OLNPs) kraft (KLNPs) nanoparticles, synthetized from sulfur-free sulfur lignin, respectively. The behavior LNP-modified electrodes was studied using two techniques, cyclic voltammetry (CV) impedance spectroscopy (EIS). Compared to an evident decrease in faradaic current increase ΔEp observed voltammograms. In addition, larger semicircles registered Nyquist plots. These results suggest strong inhibition effect electron transfer reaction by LNPs layer, especially case KLNPs. modified electrodes, properly assembled with concanavalin A (ConA) glucose oxidase (GOx), successively tested as platforms glucose, showing sensitivity (4.53 ± 0.467) (13.74 1.84) μA mM−1 cm2 Au/SAMCys/OLNPs/ConA/GOx Au/KLNPs/ConA/GOx biosensors, Finally, different layers KNLPs/ConA/GOx-modified Au electrode tested, three-layered Au(KNLPs/ConA/GOx)3 showed best analytical performance.
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