A Novel Non‐Enzymatic Glucose Sensor Based on Cobalt Nanoparticles Implantation‐Modified Indium Tin Oxide Electrode

Abstract

A new type of cobalt nanoparticles modified indium tin oxide electrode (CoNPs/ITO) was fabricated using ion implantation technique. This method is low‐cost, facile and environmentally friendly without the use of any other chemicals. Electrochemical oxidation of glucose with this sensor was examined by cyclic voltammetry (CV) and chronoamperometry in alkaline aqueous solutions. The proposed sensor exhibited prominent electrocatalytic activity toward the oxidation of glucose with a low limit of detection of 0.25 µM. Furthermore, the fabricated electrode showed excellent selectivity, good reproducibility and long‐term stability. Thus CoNPs/ITO electrode is a promising candidate in the development of non‐enzymatic glucose sensors.

Ni-Co bimetal nanowires filled multiwalled carbon nanotubes for the highly sensitive and selective non-enzymatic glucose sensor applications

“…The electrooxidation of glucose at MWCNT/Co/GCE was achieved via the Co(III)/Co(IV) redox couple at 0.53 V vs . Ag/AgCl46 and the observed electrooxidation process is inferior to MWCNT/Ni/GCE as substantiated from the obtained lower Ipa of 0.09 mA. On the other side, MWCNT/Ni-Co/GCE demonstrated an increased Ipa of 0.58 mA at 0.43 V vs .…”

“…The Epcs of MWCNT/Co/GCE located at 0.13 and 0.44 V vs . Ag/AgCl are associated with the reduction of Co(IV)/Co(III) and Co(III)/Co(II), respectively46.…”

Novel route to synthesis of N-doped graphene/Cu–Ni oxide composite for high electrochemical performance

“…Enzyme-free glucose sensing is thus highly anticipated for the high stability, simplicity, cost-effectiveness, and high reproducibility it will offer. In general, noble metals such as Pt, Au, Ad, Pd, and their alloys are used as enzyme-free glucose sensors, however, they are still not appropriate candidates for the mass production of sensors due to their high cost [28]. Recently, non-noble metals like Ni, Cu, Co, and Mn oxides have been used as the sensing elements in glucose sensors for their high electrocatalytic activity and cost-effectiveness [29].…”

Fabrication of Hierarchically Structured MOF‐Co3O4 on Well‐aligned CuO Nanowire with an Enhanced Electrocatalytic Property

“…Non-enzymatic glucose oxidation based on various electrocatalysts, including noble metals (Au, Pt, Pd) [19][20][21] and their corresponding alloys (PtÀRu, PtÀCo) [22,23] transition metals (Ni, Cu, Co) [24][25][26] and their oxides (NiO, CuO, Cu 2 O, Co 3 O 4 ) [27][28][29][30][31] has been established as a promising material for use in enzyme-free glucose sensing. In the case of noble metals are relatively more expensive, which hamper the commercial application of the non -enzymatic glucose sensor.…”