Preparation of reduced graphene oxide–Ni(OH)₂composites by electrophoretic deposition: application for non-enzymatic glucose sensing

Abstract

A sensitive and stable non-enzymatic sensing platform for d-glucose based on a reduced graphene oxide (rGO) matrix modified with Ni(OH)2 nanostructures was established.

Detection of Several Carbohydrates Using Boron-doped Diamond Electrodes Modified with Nickel Hydroxide Nanoparticles

“…[58][59][60][61][62][63][64][65][66] Taking into account the differences between the techniques employed and the increase of surface area provided for some modifiers, the analytical parameters of Ni(OH)2/BDD for glucose in the present work are comparable to those reported previously. Thus, the use of the Ni(OH)2/BDD electrode for carbohydrate determination presented in this work is advantageous because it achieves a similar response and its preparation procedure is simple and fast when compared to other electrodes.…”

“…44 Furthermore, the choice of the substrate electrode is important because interaction between NPs and the electrode surface must be favored, background current must be low and the material has to show good electrical conductivity and physical robustness. Many substrates have been already used for NiNP modification, such as BDD, 22,33 glassy carbon, 34,35 graphene, [37][38][39][40] polymer modified electrodes, 41,43 carbon nanotube, 27 graphite, 42 TiO2 nanowire electrode, 28 as well as gold. 32 Among them, BDD is attractive because it shows many required features, and it is stable in a wide potential window, shows low chemical reactivity, it is resistant in various corrosive solutions and is also an excellent platform to promote nanoparticle formation instead of films due to the irregularity of its surface.…”

“…Nickel hydroxide or oxide NPs exhibit remarkable electrocatalytic capability for glucose oxidation and other compounds due to the effect originating from the redox couple of Ni(OH)2/NiO(OH) on the electrode surface in as alkaline medium. 27,28,[32][33][34][35][36][37][38][39][40][41][42][43] Surface modification with NiNPs can be done by various chemical routes, such as sol-gel, electrodeposition and electrophoretic deposition, among others.…”

Electrophoretic deposition of graphene-related materials: A review of the fundamentals

“…Longer deposition times have been also reported [8,92] to lead to higher surface roughness of GRM films, possibly due to agglomeration within the suspension medium during EPD. For similar reasons, an increase of deposition time above a certain level can lead to deposition of non-uniform thick coatings with insufficient attachment to the substrate [8,49], or with varying porosity [163].…”

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

“…484 Subramanian et al described a non-enzymetic glucose sensor based on a HRG/Ni(OH) 2 composite, which was used for the detection of glucose. 485 The nanocomposite is comprised of leaf-shaped Ni(OH) 2 nanoplates with a diameter of ~150 nm, homogeneously dispersed between the graphene nanosheets. The dispersion could be dropped onto a glassy carbon electrode to demonstrate the non-enzymatic glucose sensor properties.…”