Application of Ni(II)-alumina composites for electrocatalytic reduction of 4-nitrophenol

Novaković, Tatjana; Abazović, Nadica D.; Savić, Tatjana D.; Čomor, Mirjana I.; Mojović, Zorica

doi:10.2298/sos2003359n

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…Ni films can be deposited by various methods such as chemical vapour deposition, atomic layer deposition, sputtering, thermal evaporation, pulsed laser deposition, electroplating, sol-gel method [18][19][20][21][22][23][24][25], etc. Among these techniques, physical vapour deposition, precisely glancing angle deposition (GLAD), still remains the most widely used process for obtaining nanostructured thin films.…”

Section: Introductionmentioning

confidence: 99%

The effect of thickness and deposition angle on structural, chemical and magnetic properties of nickel slanted columns

Potočnik

Popović

2022

SCI SINTER

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In this work, the influence of different deposition angles on the structural, chemical and magnetic properties of nickel (Ni) thin films was investigated. Nickel samples were deposited by glancing angle deposition technique at two different angles, 65o and 85o. Characterization of the thin films was carried out by scanning electron microscopy, X-ray photoelectron spectroscopy and magneto-optical Kerr effect microscopy. Structural analysis was found that the changes in the deposition angle have a great influence on the porosity of the film as well as on the amount of the present nickel oxide (NiO) in the samples. On the other hand, we have also found that different deposition angle changes the magnetic response of nickel film. The coercivity of the samples deposited at the angle of 85o is significantly higher compared to the samples deposited at lower angle which could be correlated with the higher porosity and the amount of NiO in the thin films.

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Section: Introductionmentioning

confidence: 99%

The effect of thickness and deposition angle on structural, chemical and magnetic properties of nickel slanted columns

Potočnik

Popović

2022

SCI SINTER

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“…One of interesting application of clays is in development of electrode materials. Aluminosilicate-modified electrodes have found numerous applications for electroanalytical applications [5] as photoelectrocatalyst [6] or electrocatalyst [7,8]. The properties of clays such as ion-exchange properties, chemical stability, layered aluminosilicate structure and low cost made them desirable material.…”

Section: Introductionmentioning

confidence: 99%

The influence of pH on electrochemical behavior of nicotine-clay based electrodes

et al. 2021

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Montmorillonite based clay was acid activated. Nicotine was adsorbed on untreated and acid activated clay from its aqueous solution at either pH=6 or pH=9.26 (unadjusted pH solution). The XRD analysis revealed that the 001 basal spacing of montmorillonite after nicotine adsorption was around 1.38 nm, regardless of clay treatment or pH of adsorption. The obtained values for basal spacing indicate that nicotine is in monolayer arrangement. In order to investigate electrochemical properties, untreated and acid activated clay, with and without nicotine, were used as modifier of carbon paste electrode. Cyclic voltammetry and electrochemical impedance spectroscopy were employed to study electrochemical response of clay-modified electrodes toward ferrocyanide probe. The nicotine-modified untreated clay used as paste electrode showed enhanced electrochemical response toward ferrocyanide probe in comparison to electrode based on clay without nicotine. On the other hand, adsorbed nicotine on acid activate clay resulted in lower electrode activity. Electrochemical response of adsorbed nicotine was studied at different pH. Nicotine oxidation at each of investigated samples followed the same trend regardless of clay treatment or pH at which adsorption was performed. For all samples, nicotine oxidation peak potential showed linear dependence on pH in pH range from 3.7 to 9.0, with slopes close to the value of 59 mVdec-1 expected for equal number of protons and electrons involved in the reaction. The nicotine reduction process was best resolved at pH = 1 at potential around -1.35 V, while the following cathodic wave observed at potential around -1.5 V was ascribed to the cathodic hydrogen reduction. Mechanism of electrochemical oxidation was not influenced by pH of adsorption, i.e., nicotine form. The amount of adsorbed nicotine was not correlated with the electrochemical activity suggesting that only small number of adsorbed nicotine was involved in electrochemical response.

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Application of Ni(II)-alumina composites for electrocatalytic reduction of 4-nitrophenol

Cited by 2 publications

References 31 publications

The effect of thickness and deposition angle on structural, chemical and magnetic properties of nickel slanted columns

The effect of thickness and deposition angle on structural, chemical and magnetic properties of nickel slanted columns

The influence of pH on electrochemical behavior of nicotine-clay based electrodes

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