Hierarchical tungsten-doped bimetallic selenides nanosheets arrays/nickel foam composite electrode as efficient gallic acid electrochemical sensor

Electrochemical Sensors Based on Transition Metal Materials for Phenolic Compound Detection

“…The authors attribute the good sensor performance to the high surface area and superior electrical conductivity, promoting the accumulation of BPA and enhancing sensitivity toward BPA [73]. In recent developments, a multi-metal selenide comprising of tungsten-doped cobalt-nickel selenide nanosheets arrays (W-Co 0.5 Ni 0.5 Se 2 NSAs), self-supported on nickel foam served as an effective and accurate sensor for gallic acid detection [74]. Gallic acid is essential for the food and pharmaceutical industry and health perspectives.…”

Facile Construction of Ultrathin V-Doped NiSe2/Ni3Se4/CuSe Nanosheets for Enhanced Urea-Assisted Electrochemical Hydrogen Production

“…Urease was the first metalloenzyme to be described as an enzyme-containing nickel. It consists of two Ni­(II) ions and a hydroxide, which are active sites of urease. , Therefore, there is a greater emphasis on Ni-based catalysts like nickel oxides, , nickel hydroxides, − nickel sulfides, − and nickel phosphides. , Transition metal selenides, in particular, are of interest because of their low ionization energy, excellent electrical conductivity due to their large atomic radius, and the fact that they help to speed up the rate of electron transfer. − To further improve the intrinsic activity and stability of nickel selenide, various modification strategies have been adopted. Among them, the construction of heterogeneous structures will provide active sites with multiple components, and the synergistic effect of electrons in the heterogeneous structures will facilitate transfer of electrons to overcome the slow kinetic properties inherent in the six-electron transfer step, resulting in higher electrocatalytic performance. − Yang et al constructed the NiSe 2 /FeSe 2 p–p heterojunction catalyst by a simple selenization method and obtained a current of 50 mA cm –2 with only 127 mV overpotential, confirming the low energy consumption of UOR.…”