Electrodeposition of Polypyrrole Films: Influence of Fe3O4 Nanoparticles and Platinum Co-Deposition

Montoya, Paula; Marín, Tiffany; Calderón, Jorge A.; Jaramillo, Franklin

doi:10.5772/27230

Cited by 4 publications

(2 citation statements)

References 40 publications

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“…This confers on the process the advantages of close control of the deposition voltage, bath simplicity and avoiding the use of contaminating additives. However, in the potentiostatic mode, deposition current is not constant; it tends to decrease as the concentration of the ionic species decrease in the solution [8]. This makes deposition rate control difficult.…”

Section: Introductionmentioning

confidence: 98%

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Aremo¹,

Mo²,

Ib³

2017

J Nanosci Curr Res

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Nickel and graphite was potentiostatically co-deposited using a composite nickel-graphite composite counter electrode (CCE) with tunable-friability. This was done to achieve steady introduction of graphite into the electrolyte without intermittent mechanical infusion and stirring, thus facilitating a potentiostatic deposition route and promoting homogeneity of deposition. Graphite electrodes were produced at densities of 0.920, 1.026 and 1.188 g/cm 3 and their suitability for constitution in a CCE assessed. The surface area of the nickel component of the CCE was varied from 100% to about 60 and 30% surface area and combined with the graphite electrode to form CCE constitutions designated as triplet, doublet and singlet respectively. Deposition was done for about 8 hours in 1 M NiSO4 using the different CCE constitutions, an Ag/AgCl reference electrode and a custom deposition head which served as the working electrode. The mechanism of graphite electrode unraveling was observed to be the formation of oxygen and CO 2 due to oxidation reactions at the CCE. Graphite electrode of density 0.920 g/cm 3 was selected for the CCE due to its extensive surface porosity, a characteristic determined as favourable to the mechanism of electrode unraveling. Co-deposition of graphite with nickel was observed to increase as nickel surface area was reduced from the triplet to singlet. SEM micrographs show partially and fully embedded graphite particles in the nickel matrix while the presence of nickel and graphite was affirmed.

show abstract

Section: Introductionmentioning

confidence: 98%

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Aremo¹,

Mo²,

Ib³

2017

J Nanosci Curr Res

View full text Add to dashboard Cite

show abstract

“…This confers on the process the advantages of close control of the deposition voltage and bath simplicity, also avoiding the use of contaminating additives. However, in the potentiostatic mode, the deposition current is not constant; it tends to decrease as the concentration of the ionic species decreases in the solution [8]; this makes deposition rate control difficult. Often, co-deposition involves the use of multi-species ionic baths or solidparticulates in an ionic suspension [9][10].…”

Section: Introductionmentioning

confidence: 99%

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Aremo¹,

Adeoye²,

Obioh³

2019

Port. Electrochim. Acta

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Nickel and graphite were potentiostatically co-deposited using a nickel-graphite composite counter electrode (HCE) with tunable-friability. Graphite electrodes were produced at densities of 0.920, 1.026 and 1.188 g/cm 3 , and their suitability for constitution into HCE was assessed. The surface area of the nickel component was varied from 100% to about 60% and 30 %, and combined with the graphite electrode, to form HCE, designated as triplet, doublet and singlet, respectively. Deposition was done for about 8 hours in 1 M NiSO4, using the different HCE constitutions, an Ag/AgCl reference electrode and a custom deposition head which served as working electrode. The mechanism of graphite electrode unraveling was observed to be the formation of oxygen and CO2, due to oxidation reactions at HCE. The graphite electrode with a density of 0.920 g/cm 3 was selected for HCE, due to its extensive surface porosity, a characteristic determined as favorable to the mechanism of electrode unraveling. Codeposition of graphite with nickel was observed to increase as the nickel surface area was reduced from triplet to singlet. SEM micrographs show partially and fully embedded graphite particles in the nickel matrix, while the presence of nickel and graphite was affirmed.

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Ultrasonic-aided preparation of poly(vanillin-co-thiophene)/green Fe₃O₄ nanocomposites via solution mixing for methyl orange adsorption and antibacterial applications

Ait Radi,

Cherifi,

Boukoussa

et al. 2024

Journal of Environmental Chemical Engineering

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Electrodeposition of Polypyrrole Films: Influence of Fe3O4 Nanoparticles and Platinum Co-Deposition

Cited by 4 publications

References 40 publications

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Potentiostatic Co-deposition of Nickel and Graphite Using a Composite Counter Electrode

Ultrasonic-aided preparation of poly(vanillin-co-thiophene)/green Fe₃O₄ nanocomposites via solution mixing for methyl orange adsorption and antibacterial applications

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