A high performance nonenzymatic electrochemical glucose sensor based on polyvinylpyrrolidone–graphene nanosheets–nickel nanoparticles–chitosan nanocomposite

Ultra-fast and highly sensitive enzyme-free glucose biosensing on a nickel–nickel oxide core–shell electrode

“…[16][17][18] Ni-Based nanomaterials exhibit a remarkably high catalytic activity for glucose oxidation due to the formation of a redox couple Ni(OH) 2 /NiOOH in an alkaline medium. 9,19 Recently, a number of Ni-based glucose biosensors have been investigated and their performance is still being improved; 8,14,[20][21][22][23][24] however, to improve the performance of Nibased glucose biosensors, many fabrication processes, such as electrodeposition, composition with graphene and/or polymers, alloying with other metals, 3D ower-like approach, etc., have been applied. 8,14,[20][21][22][23][24][25][26] Among various techniques, electrodeposition is particularly interesting due to the directelectrodeposition on the electrode surface and trouble-free electrode preparation.…”

Nickel‐Nanoparticles on Doped Graphene: A Highly Active Electrocatalyst for Alcohol and Carbohydrate Electrooxidation for Energy Production

“…The electrocatalytic activity of our Ni−NGr/GCE catalyst is significantly higher for glucose oxidation compared to nickel nanoparticles on porous silicon (PS) flower (Ni@PS‐CPE) using carbon paste electrode (CPE), nickel nanoparticles (NiNPs) on polyvinylpyrrolidone (PVP) stabilized graphene nanosheets (GNs) with chitosan (CS) (PVP‐GNs‐NiNPs‐CS), a glassy carbon disc electrode modified with multi‐walled carbon nanotubes and nickel (II) oxide (GC/MWCNT/NiO), chitosan‐reduced graphene oxide‐nickel nanoparticles (CS‐RGO‐NiNPs) on a screen‐printed electrode (SPE) and nano NiO modified carbon paste electrodes . However, the Ni−Co bi‐metal nanowire filled multiwall carbon nanotubes (MWCNT/Ni−Co) catalyst showed comparatively better electrocatalytic activity than our synthesized electrocatalyst, indicating the synergistic effect of nickel and cobalt on MWCNT/Ni−Co nanocomposite.…”

Synthesis of [3]Rotaxanes that Utilize the Catalytic Activity of a Macrocyclic Phenanthroline–Cu Complex: Remarkable Effect of the Length of the Axle Precursor

“…The biosensors which were not constructed by self‐assembly, i.e. two non‐enzymatic biosensors that contained metal nanoparticles as well as chitosan‐graphene 45, 46 and one enzymatic one based on a 3D graphene electrode 20 showed better sensitivities, but also had the drawback of operating at positive potentials, which may lead to interferences when used in real matrices, especially in the case of the non‐enzymatic ones, due to the lack of the enzymatic selective layer.…”