Electropolymerized nickel macrocyclic complex-based films: design and electrocatalytic application

Trevin, Stéphane; Bedioui, Féthi; Villegas, Maria Guadalupe Gomez; Bied-Charreton, Claude

doi:10.1039/a700533d

Cited by 100 publications

(82 citation statements)

References 27 publications

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“…1c), as previously reported [11,18,22,23]. This allows the formation of the expected coating film which is further characterized in a fresh 0.1 M NaOH aqueous solution (with no NiTSPc monomer).…”

Section: à2mentioning

confidence: 87%

“…The examined material was obtained by two consecutive procedures: i) the electropolymerization of NiTAPc in DMF via the electrooxidative N À N coupling of the amino groups, to achieve a film denoted poly-NiTAPc, followed by ii) the electro-chemical transformation of the poly-NiTAPc film in alkaline aqueous solution to form the interconnected O À Ni À O oxo bridges, as previously reported in similar cases [11,17,18]. The obtained film is then denoted poly-NiTAPc(OH).…”

Section: Introductionmentioning

confidence: 99%

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Nickel Tetraaminophthalocyanine Based Films for the Electrocatalytic Activation of Dopamine

et al. 2003

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A novel electrode material was obtained by two consecutive procedures: (i) the electropolymerization of NiTAPc in DMF via the electro-oxidative N ± N coupling of the amino groups, to achieve a film denoted poly-NiTAPc, followed by (ii) the electrochemical transformation of the poly-NiTAPc film in alkaline aqueous solution to form the interconnected OÀNiÀO oxo bridges. The obtained film is then denoted poly-NiTAPc(OH). For the first time the electropolymerized poly-NiTAPc coating shows a clear electrocatalytic activity towards Dopamine (DA) redox process, either as prepared or upon its electrochemical transformation in alkaline solution. Furthermore it clearly appears that poly-NiTAPc(OH) film exhibits a much larger electrocatalytic behavior than the as-prepared polyNiTAPc coating. This shows unambiguously the beneficial effect of the changes in the staking structure of the nickel phthalocyanine complexes upon the electrochemical treatment of the film in alkaline solution. It should be emphasized here that the increase in the oxido-reduction currents related to DA on both films is not to be associated with any changes in the geometrical electrode area. This novel kind of material could present some interesting potentialities for a highly sensitive detection of others neurotransmitters.

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Section: à2mentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Nickel Tetraaminophthalocyanine Based Films for the Electrocatalytic Activation of Dopamine

et al. 2003

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“…It has been already reported that electrochemically formed nickel porphyrin coated electrodes exhibit good electrocatalytic activity for the oxidation of carbohydrates, benzyl alcohol [27], methanol, ethanol, propanol and hydrazine etc. [28,29].…”

Section: Resultsmentioning

confidence: 98%

Novel Ni(II) Mixed Ligand Complex Modified Electrode: Catalytic Effect on Anodic Oxidation of Phenol

et al. 2004

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Cyclic voltammetry, using graphite paste electrode (GPE) and chemically modified GPE with Ni(II) mixed ligand complex (MGPE), is described for sensing and detoxification of phenol. A novel mixed ligand complex of nickel with 1,4,8,11-tetraaza cyclotetradecane (cyclam) and thiocyanate in the molar ratio of 1 : 2 : 5 is synthesized and characterized by spectroscopic and electrochemical studies. The Ni(II)-cyclam-thiocyanate complex behaves as a fast electron-transfer mediator, as nickel ions exist in higher oxidation state of Ni(III) on applying a potential of 1.25 V (vs. Ag/AgCl), which catalyses the oxidation of the target species. The mixed ligand complex, when incorporated in the graphite paste electrode, is sensitive to detect phenol as low as 10 mg/L in solution. The catalytic effect of the Ni(II)-cyclam-thiocyanate complex enhanced many folds the oxidation of phenol compared to GPE. The technique has potential for sensing/monitoring and detoxification of phenol released in the ecosystem from polluting industries.

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“…Based on this concept, many nickel complexes in alkaline solution have been electrodeposited onto glassy carbon electrode surfaces and the electrochemical properties have been examined. [2][3][4][5][6][7][8][9][10][11][12][13][14] Nickel macrocyclic complexes, such as nickel porphyrin, cyclam, annulene, salen and cyanine, have been studied. These examples show methanol oxidation currents are five to eighty times higher than their nickel control electrodes.…”

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confidence: 99%

Nickel Cysteine Complexes as Anodic Electrocatalysts for Fuel Cells

Chen

Giroud

2014

J. Electrochem. Soc.

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Compared to platinum, nickel is an inexpensive catalyst that can oxidize methanol in alkaline media. There is a desire to increase nickel loading during electrodeposition for improved performance. In this paper, a nickel cysteine complex (NiCys) is used as the precursor for electrodeposition on glassy carbon electrode surfaces. After optimization of cysteine concentration, the surface concentration of NiOOH on NiCys electrodes characterized by cyclic voltammetry in 0.1 M NaOH can reach 1.28 (± 0.32) × 10 −7 mol/cm 2 . The large amount of NiOOH on NiCys electrodes provide 5 times the methanol oxidation current compared to Ni electrodes prepared without cysteine as demonstrated by chronoamperometry at 0.7 V vs. Hg/HgO. Atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS) and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy have been applied to examine surface morphologies and structures of NiCys and Ni electrodes. The analysis reveals that cysteine adjusts the solubility of Ni(OH) 2 in 0.1 M NaOH, so more uniform and smaller size nanoparticles are electrodeposited on electrode surfaces compared to Ni electrodes. Fuel cells are a promising energy conversion device to convert chemical energy in a fuel to electrical energy. Nickel-based anodic electrocatalysts are cheaper than conventional precious metal based catalysts and can oxidize various fuels e.g. alcohols, carbohydrates, amino acids and alkanes in alkaline media.1 Direct methanol fuel cells are attracting more interest, because methanol has a high theoretical energy density and is easy to handle in transportation and storage. In recent years, there has been extensive research on using nickel based catalysts to electro-oxidize methanol. Planar nickel electrodes show poor catalytic activities, 2 so some researchers have focused on dispersing nickel centers in three dimensional structures to increase methanol oxidation current. Based on this concept, many nickel complexes in alkaline solution have been electrodeposited onto glassy carbon electrode surfaces and the electrochemical properties have been examined. [2][3][4][5][6][7][8][9][10][11][12][13][14] Nickel macrocyclic complexes, such as nickel porphyrin, cyclam, annulene, salen and cyanine, have been studied. These examples show methanol oxidation currents are five to eighty times higher than their nickel control electrodes. 5,15 However, none of these studies provide a thorough description of the three dimensional structure, i.e. how nickel centers are dispersed by these nickel complexes. It is also not discussed as to how these nickel complexes relate to NiOOH (the catalytically active species) in chemical structure. Very few papers present surface morphology images.3,4 Most of these nickel complexes have NiOOH surface concentration in the range of 10 −9 to 10 −8 mol/cm 2 . One of the nickel annulene has reached the highest value of 9.7 × 10 −8 mol/cm 2 . 16 We noticed that cysteine can dissolve Ni(OH) 2 in 0.1 M NaOH, so cysteine should have a strong interac...

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Electropolymerized nickel macrocyclic complex-based films: design and electrocatalytic application

Cited by 100 publications

References 27 publications

Nickel Tetraaminophthalocyanine Based Films for the Electrocatalytic Activation of Dopamine

Nickel Tetraaminophthalocyanine Based Films for the Electrocatalytic Activation of Dopamine

Novel Ni(II) Mixed Ligand Complex Modified Electrode: Catalytic Effect on Anodic Oxidation of Phenol

Nickel Cysteine Complexes as Anodic Electrocatalysts for Fuel Cells

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