首页|A Non-Enzymatic and Electrochemical-Based Sensor using a Prussian Blue-Gold Nanoparticle-Reduced Graphene Oxide Ternary Nanocomposite for Efficient Hydrogen Peroxide Detection.
A Non-Enzymatic and Electrochemical-Based Sensor using a Prussian Blue-Gold Nanoparticle-Reduced Graphene Oxide Ternary Nanocomposite for Efficient Hydrogen Peroxide Detection.
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An electrochemical sensor has been developed using PBNCs/AuNPs/RGO ternary nanocomposite,in which gold nanopar-ticles(AuNPs)are deposited on Prussian blue nanocubes(PBNCs)and reduced graphene oxide(RGO)using two-step in-situ synthetic approach.The synthesized ternary nanocomposite shows high catalytic activity towards H2O2 sensing due to the synergistic effect of gold nanoparticles and RGO.The material was prepared by the co-precipitation method,and the morphology of the synthesized composites was characterized using X-Ray diffraction(XRD),scanning electron microscopy(SEM),and High-resolution Transmission electron microscopy(HR-TEM).Electrochemical measurements were performed by modifying glassy carbon electrodes(GCE)with bare PBNCs,PBNCs/RGO,and PBNCs/AuNPs/RGO for low-level detection of H2O2 using Cyclic Voltammetry(CV)and Chronoamperometry.The interference property was analyzed using ascorbic acid(AA),uric acid(UA),and glucose as interfering agents.The modified electrode shows high sensitivity of 5.47 nA/nM and a limit of detection of 260 pM for H2O2 at(S/N = 3).This electrochemical sensor observed a linear range of detection from 0.66 nM to 10.53 nM.The proposed sensor exhibits good stability,better selectivity,and a picomolar concentration detection limit for H2O2.
AmperometryGrapheneGold nanoparticlesHydrogen peroxidePrussian blue nanocubes
Seema Chauhan、Chhaya Sharma
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Department of Paper Technology,Indian Institute of Technology Roorkee,Saharanpur Campus,Saharanpur,247001,India
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