Electro-oxidation of alcohols on nickel dispersed in poly-o-aminophenol modified graphite electrode

Nickel-foam-supported β-Ni(OH)2 as a green anodic catalyst for energy efficient electrooxidative degradation of azo-dye wastewater

“…Ni(III) and Ni(IV)) have strong oxidizing properties, and as a result, Ni(III) and Ni(IV) have shown promise as intermediates in a number of nickel-based catalysts for many oxidation reactions, [25][26][27] especially the oxidation of organic compounds such as 4-chlorophenol, 28,29 urea 30 and alcohols. 31,32 Accordingly, it is a good strategy to prepare a highly active nickel-based anode for EOD by growing a condensed lm of an Ni(II) compound on a high-specic-area conducting support. During the EOD, the Ni(II) compound lm will be activated via electrochemical oxidization to the high valence states of Ni(III) and Ni(IV), which are highly active for generating hydroxyl radicals 33 or for directly oxidizing organic pollutants 29 , and will then be reduced back to Ni(II).…”

A comparative investigation of the electrocatalytic oxidation of methanol on poly-NiTCPP and poly-TCPP/Ni modified glassy carbon electrodes

“…Pt and Pt oxides [3,4], or modified Ni electrodes [5,6], Pt-Ru or Ni-Cu alloys [7,8], polymeric matrices with incorporated metal [9], nickel or cobalt hydroxide modified glassy carbon electrodes [10,11] have been used in order to study the kinetics and mechanism of methanol oxidation. In addition, different complexes of nickel such as Ni II -salen [12], Ni II -tetraazamacrocyclic complexes [13], Ni II -curcumin [14] or Ni II -hematoporphyrin IX [15] have been employed for catalytic electro-oxidation of methanol in alkaline media.…”

A highly sensitive methanol sensor using amino-functionalized multi-walled carbon nanotubes as templates to load nickel and copper nanoparticles

“…Many studies have been focused on the non-noble metals or their complexes [9][10][11] for substitution of noble metals. Among these materials, metal Ni, [12][13][14] Ni-alloy [15][16][17] and Ni-complexes (such as Ni(OH) 2 and NiO) [18][19][20][21] exhibit good electro-chemical activity and are regarded as good candidates. Porous nickel phosphates combine the advantages of the redox catalytic property of nickel with large surface area and free diffusion accesses.…”

“…In the absence of methanol in the electrolyte, there are two redox peaks at +0.37 V (vs. Ag/AgCl) and +0.61 V (vs. Ag/AgCl) which can be dened as the redox couple of Ni(II)/Ni(III). 12,22,24 In the presence of methanol, the voltammetric responses of different electrodes are compared. The inset of Fig.…”