A NiFe Alloy Reduced on Graphene Oxide for Electrochemical Nonenzymatic Glucose Sensing

Abstract

A NiFe alloy nanoparticle/graphene oxide hybrid (NiFe/GO) was prepared for electrochemical glucose sensing. The as-prepared NiFe/GO hybrid was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results indicated that NiFe alloy nanoparticles can be successfully deposited on GO. The electrochemical glucose sensing performance of the as-prepared NiFe/GO hybrid was studied by cyclic voltammetry and amperometric measurement. Results showed that the NiFe/GO-modified glassy carbon electrode had sensitivity of 173 μA mM−1 cm−2 for glucose sensing with a linear range up to 5 mM, which is superior to that of commonly used Ni nanoparticles. Furthermore, high selectivity for glucose detection could be achieved by the NiFe/GO hybrid. All the results demonstrated that the NiFe/GO hybrid has promise for application in electrochemical glucose sensing.

Bimetallic Nanomaterials-Based Electrochemical Biosensor Platforms for Clinical Applications

“…Graphene and carbon nanotubes (CNTs) are potential carbon material analogs; owing to their ease functionalization, notable biocompatibility, good conductivity, and the large specific surface area, they have been extensively explored in the electrode transducer materials [63,64]. Nanocomposites prepared from graphene, carbon nanotube and polymer matrix can not only reduce the interior resistances of electrode but also inhibit the stacking of graphene layers, and then decrease the adsorption of carbon nanotubes [63,65].…”

“…The CV and amperometric measurements showed that the NiFe/GOmodified GC electrode showed higher sensitivity of 173 µA mM −1 cm −2 and an LOD of 9 µM (S/N = 3) for glucose sensing with a linear range up to 5 mM, which is better than that of conventional Ni nanoparticles. Moreover, high selectivity for glucose detection was also achieved by the NiFe/GO hybrid [64]. Recently, Lakhdari et al, fabricated an NiFe-Polyaniline electrode via the oxidation of the monomer aniline on FTO (fluorine tin oxide) substrate, followed by deposition of nickel-iron nanoparticles (NiFe NPs) on the polyaniline surface by a chronoamperometry method.…”

Reduced graphene oxide decorated with Ni-Fe-Mo permalloy obtained by sputtering

“…In another study a NiFe alloy nanoparticle/graphene oxide hybrid (NiFe/GO) for electrochemical glucose sensing was obtained. GO was prepared by a modified Hummers' method and the NiFe/GO composite by a mixture of metal salts in aqueous solution [16]. However, to the best of our knowledge, the rGO powder sputtered by permalloy nanoparticles has never been reported.…”

Ανάπτυξη Βιοαισθητήρα Για Την Ταχεία Ανίχνευση Ορμονών Και Τοξινών Με Εφαρμογή Σε Τρόφιμα Και Ύδατα

“…Οι προκλήσεις περιλαμβάνουν τον καθορισμό της τοξικότητας και βιοσυμβατότητα των νανασυνθέσεων γραφένιου/οξειδίων μετάλλων. Πρόσφατες μελέτες (Deng et al, 2018) αποκαλύπτουν ότι τα διμεταλλικά κράματα, όπως Pt-Ni, Pt-Ru, Pt-Au, Ni-Co, Pt-Co και Co-Cu παρουσιάζουν καλύτερη καταλυτική απόδοση από εκείνη των μονο-μετάλλων στην ανίχνευση γλυκόζης. Χαρακτηριστικό παράδειγμα αποτελεί η εργασία του Zhao κ.ά.…”

“…Ένα υβριδικό ηλεκτρόδιο αποτελούμενο από νανοσωματίδια κράματος NiFe και οξειδίου του γραφένιου (NiFe/GO ) παρασκευάστηκε για την ανίχνευση ηλεκτροχημικής γλυκόζης (Deng et al, 2018). Η προσθήκη του στοιχείου Fe σε νανοσωματίδια Ni για να σχηματίσουν νανοσωματίδια κράματος NiFe βελτίωσε την ηλεκτροχημική απόδοση του βιοαισθητήρα γλυκόζης, η οποία έδειξε υψηλότερο ρεύμα από το ηλεκτρόδιο Ni/GO.…”