Single layer of nickel hydroxide nanoparticles covered on a porous Ni foam and its application for highly sensitive non-enzymatic glucose sensor

Onsite Deposition of Self-Repairing Biomimetic Nanostructured Ni Catalysts with Improved Electrocatalysis toward Glycerol Oxidation for H 2 Production

“…The Ni 2p spectrum exhibited four peaks at 855.8, 861.5, 873.4 and 879.9 eV. The two main peaks, centered at 855.8 and 873.4 eV, exhibited a significantly split spin-energy of 17.6 eV and were assigned to Ni 2p3/2 and Ni 2p1/2, respectively, which are characteristic of Ni(OH) 2 and agree well with previously reported data [46][47][48]. Satellite peaks were also observed at 861.5 for Ni 2p3/2 and at 879.9 eV for Ni 2p1/2.…”

Hierarchical NiO Superstructures/Foam Ni Electrode Derived from Ni Metal-Organic Framework Flakes on Foam Ni for Glucose Sensing

“…6F. The two parameters were larger than some previous results [11][12][13][14][15][16]. The larger D and K cat might result from the porous structure and improved electrical conductivity of the hierarchical NiO superstructures/foam Ni electrode to enhance the electron and mass transfer which have been proven by the electrochemical impedance spectroscopy (Fig.…”

“…Yang et al prepared CuO microstructures with tunable morphology on Ni foam via a hydrothermal method [10]. Similarly, various nanostructures, like nickelcobalt hydroxide nanosheets arrays and nickel hydroxide nanoflakes on foam Ni, have been reported [11][12][13][14][15]. The other is foam Ni modification.…”

Fast conversion of redox couple on Ni(OH)2/C nanocomposite electrode for high-performance nonenzymatic glucose sensor

“…Nickel oxide/hydroxide is a promising material that has excellent electrocatalysis toward glucose due to its redox couple (NiO/Ni(OH) 2 ↔NiOOH) in which NiOOH can oxidize glucose easily [29][30][31][32]. The mechanism of glucose detection by NiO/Ni(OH) 2 electrode through amperometric method in alkaline solution is explained as follows [23,31,33]: At a given anodic potential, NiO/ Ni(OH) 2 can be electrochemically oxidized into NiOOH (Eq.…”

“…In recent years, a variety of strategies that focused on enhancing the activities of solid catalyst, such as building a multi-dimensional structure [23,30,34], preparing nickelbased nanomaterials [31,32,35], selecting highly specific surface material as a substructure [12,25,34], and modifying the electrode with other elements [27,36], have been developed to improve the sensitivity and linearity of the designed sensor. However, the OH − that participates in the glucose oxidation does not catch adequate attention, and 0.1 M KOH (NaOH) is commonly adopted as the default supporting electrolyte for most nickel-based sensors in the reported researches [23,34].…”