Fabrication of nickel nanoparticles modified electrode by reverse microemulsion method and its application in electrolytic oxidation of ethanol

Shah, Asma Tufail; Din, Muhammad Imran; Farooq, Umar; Butt, Mira Tul Zubaida; Athar, Makshoof; Chaudhary, Manchal; Ahmad, Mirza Nadeem; Mirza, Misbah

doi:10.1016/j.colsurfa.2012.04.022

Cited by 13 publications

(10 citation statements)

References 18 publications

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“…Microemulsions are single phase at the macroscopic level and a nanoheterogeneous system at the nanoscopic scale. Three different type of microemulsions can be obtained: oil-in-water (O/W microemulsions, also known as direct microemulsion), water-in-oil (W/O microemulsions, also called reverse micelles/microemulsions), where the droplets of oil or water, respectively, vary from 1 to 100 nm, or bicontinuous, where similar water and oil domains are interconnected, thereby forming a tridimensional dynamic network [64][65][66][67]. This option overcomes the limitations of the liquid crystal and micellar solution approaches, as it offers a robust and independent system as a soft-template to generate pores, i.e., the microemulsions act as nanoreactors for the electrodeposition of porous materials.…”

Section: Microemulsion-based Electrodepositionmentioning

confidence: 99%

“…In general, the electroactive species are dissolved in the aqueous solution, and the electrodeposition only occurs in the aqueous domains of the microemulsion. Nanoparticles and macroporous and nanoporous materials have been successfully synthesized using microemulsion-based electrodeposition [64][65][66][67]. However, from an electrochemical point of view, classical microemulsions are not realistic or competitive electrochemical media due to their high ohmic resistance, which is introduced by the oil and surfactant components.…”

Section: Microemulsion-based Electrodepositionmentioning

confidence: 99%

“…The proposal was derived from initial studies, in which the possibility of using microemulsions as electrolytic media to obtain porous materials was recommended. Microemulsions are stable-structured liquid media usually composed of droplets of oil (O) or aqueous (W) components that are dispersed in aqueous or oil components to, respectively, form O/W or W/O systems [64][65][66][67]. Surfactants are necessary to stabilize the microemulsion.…”

Section: Detailed Analysis Of the Microemulsion-based Electrodepositimentioning

confidence: 99%

“…The electrochemical pathway offered an alternative route that eliminates the use of aggressive reducing agents as well as introduce the possibility to directly grow supported nanoparticles on the surface of conductive electrodes, which is important for electrocatalysis, as that enables a simple recyclability and reusability of electrocatalysts. Au, Ni, Pd, Pt, Co-Ni or Pt-Ru nanoparticles have been synthesized using reverses microemulsions [64][65][66][67]71]. However, the low conductivity and high ohmic resistance leads to very low electrodeposition rates.…”

Section: Detailed Analysis Of the Microemulsion-based Electrodepositimentioning

confidence: 99%

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Microemulsion-Based One-Step Electrochemical Fabrication of Mesoporous Catalysts

Serrà

Vallés

2018

Catalysts

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Electrochemical technology has been proposed as an alternative or complementary method to classical inorganic synthesis for the fabrication of effective metallic solid catalysts. Microemulsion-based electrodeposition is a novel, fast, and one-step procedure to obtain mesoporous catalysts with extraordinarily effective areas, which can be used in heterogeneous catalysis for degradation of pollutants and clean energy production. The fabrication process involves conducting microemulsions containing ionic species (dissolved in aqueous solutions) as precursors of the metallic catalysts. The presence of nanometric droplets of organic or ionic-liquid components in the microemulsion defines the mesoporosity of the catalysts during a one-step electrodeposition process. This method also allows the fabrication of metal catalysts as supported mesoporous films or mesoporous nanowires with very high effective areas. Additionally, reactants have excellent accessibility to the overall surface of the catalysts. The different catalysts fabricated with the help of this technology have been tested for competitive degradation of organic pollutants and anodes' materials for fuel cell devices.

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Section: Microemulsion-based Electrodepositionmentioning

confidence: 99%

Section: Microemulsion-based Electrodepositionmentioning

confidence: 99%

Section: Detailed Analysis Of the Microemulsion-based Electrodepositimentioning

confidence: 99%

Section: Detailed Analysis Of the Microemulsion-based Electrodepositimentioning

confidence: 99%

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Microemulsion-Based One-Step Electrochemical Fabrication of Mesoporous Catalysts

Serrà

Vallés

2018

Catalysts

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“…They are the most promising candidates to substitute for platinum conducting electrolytic membranes in fuel cells, which could reduce the cost of internal combustion engine operation [1]. Several methods, such as radiation [2], micro-emulsion [3], thermal decomposition [4,5], laser ablation [6,7] and aqueous chemical reduction [8], are used for preparation of Ni NPs. However, the aqueous reduction route is preferred for its simplicity, inexpensiveness and ease of control over particle size and distribution via common experimental parameters [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol

et al. 2015

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A simple and efficient microwave-assisted procedure for synthesis of L-cysteine-capped nickel nanoparticles (cyst-Ni NPs) in ethylene glycol solvent was demonstrated. The as-synthesised NPs were characterised by ultraviolet-visible (UV-Vis) spectrophotometer, Fourier transform infrared (FTIR) spectroscopy, transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The cyst-Ni NPs are proved to be excellent heterogeneous catalysts for the 100 % reduction of 4-nitrophenol (4-NPh) in the presence of reductant (NaBH 4 ) within reaction time of 40 s. In contrast, Raney nickel in similar sample environments shows only 25.5 % reduction. The kinetic and energetic behaviours of cyst-Ni NPs were also studied, and the reduction reaction is determined to follow pseudo-first-order kinetics with a rate constant value of 0.115 s -1 and activation energy of 36.1 kJÁmol -1 . In addition to its high catalytic competence, cyst-Ni NPs catalyst exhibits excellent recyclability with negligible catalytic poisoning.

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The electrocatalytic behavior of electrodeposited Ni–Mo–P alloy films towards ethanol electrooxidation

Hassan

Hamid

2013

Surface & Interface Analysis

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Ternary Ni-Mo-P thin films have been electrodeposited from citrate-based electrolyte onto graphite substrates for application as anode catalysts for ethanol electrooxidation. The operating deposition parameters were optimized to produce Ni-Mo-P alloy films of outstanding catalytic activity. The phase structure of the deposits was evaluated employing X-ray diffraction technique. Morphology and chemical composition of the deposited alloy films were studied using scanning electron microscopy and energy-dispersive X-ray analysis, respectively. The results demonstrated that the rate of Ni-Mo-P deposition increases with increasing the ammonium molybdate concentration in the plating electrolyte up to 10 g l À1 . Also, the amount of Mo in the deposits increases with increasing the ammonium molybdate concentration up to 7.5 g l À1 , and the maximum Mo content in the film was 9.1 at.%. The catalytic activity of Ni-Mo-P/C alloy films has been evaluated towards electrooxidation of ethanol in 1.0 M NaOH solution by using cyclic voltammetry and chronoamperometry. The catalytic performance of the prepared anodes as a function of the amount of Mo was studied. The results showed an increase in the oxidation peak current density of ethanol with increasing the Mo at.% in the deposited alloy films. Additionally, Ni-Mo-P/C electrodes displayed significantly improved catalytic activity and stability towards electrooxidation of ethanol compared with that of Ni-P/C electrode.

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Fabrication of nickel nanoparticles modified electrode by reverse microemulsion method and its application in electrolytic oxidation of ethanol

Cited by 13 publications

References 18 publications

Microemulsion-Based One-Step Electrochemical Fabrication of Mesoporous Catalysts

Microemulsion-Based One-Step Electrochemical Fabrication of Mesoporous Catalysts

Microwave-assisted synthesis of L-cysteine-capped nickel nanoparticles for catalytic reduction of 4-nitrophenol

The electrocatalytic behavior of electrodeposited Ni–Mo–P alloy films towards ethanol electrooxidation

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