Electrochemical investigation and amperometry determination iodate based on ionic liquid/polyoxotungstate/P-doped electrochemically reduced graphene oxide multi-component nanocomposite modified glassy carbon electrode

Abstract

Constructing a sensitive electrochemical sensor based on (bdpy)SiW11Ni/P-ERGO/GCE for IO3− detection at the nanomolar level with noticeable selectivity.

Polyoxometalate Functionalized Sensors: A Review

“… Sharifi et al (2021 ) reported a modified GCE with a tetra-component nanocomposite consisting of a [1,10-(1,4-butanediyl) dipyridinium] ionic liquid (bdpy), the Keggin-type SiW 11 O 39 Ni(H 2 O) (abbreviated as SiW 11 Ni), and Phosphorus-doped electrochemically reduced graphene oxide (P-rGO), by electrodeposition technique for iodate determination. The presence of bdpy provided an additional advantage for increasing the loading of POM, improving the stability of the nanocomposite due to the strong electrostatic attraction between SiW 11 Ni and positively charged bdpy.…”

Fabrication of a polyoxotungstate/metal–organic framework/phosphorus-doped reduced graphene oxide nanohybrid modified glassy carbon electrode by electrochemical reduction and its electrochemical properties

“…6C, peak I, which corresponds to HER, is only seen at pH 0.5 (curve a). This phenomenon can be due to the stability of POMs-based modied electrodes 9,10 and also the performance of HER at acidic pH. 83,84 Therefore, pH 0.5 was considered the optimal pH, and further studies were performed at this pH.…”

“…Among the carbon materials, graphene extensively studied in nanotechnology elds due to its excellent chemical stability, high surface area, extraordinary conductivity, and good mechanical properties. 10,12 Graphene was discovered at Manchester University by Andre Geim and Kostya Novoselov in 2004. 52 It is an allotrope of carbon-containing a single layer of atoms arranged in a twodimensional (2D) hexagonal lattice nanostructure.…”

“…Polyoxometalates (POMs) are a large class of metal oxide clusters, consisting of early transition metal oxoanions with shared oxygen atoms exhibiting well-defined connectivity. 1,2 POMs, especially Keggin-type POMs, have wide applications in various fields such as catalysis, 3 optics, 4 magnetism, 5 medicine, 6,7 environmental science, 8 and electrochemistry, 9,10 due to their exclusive molecular structure, electronic features, and excellent redox properties. One of the attractive properties of POMs is that the anionic cluster can undergo a fast, stepwise, reversible, and multi-electron transfer reaction while keeping the structural integrity.…”

“…Among the carbon materials, graphene extensively studied in nanotechnology fields due to its excellent chemical stability, high surface area, extraordinary conductivity, and good mechanical properties. 10,12…”