Mechanism for formation of fcc-cobalt nanowires in electrodeposition at ambient temperature

Mehmood, Tahir; Khan, Babar Shahzad; Mukhtar, Aiman; Chen, Xinqi; Yi, Ping G.; Tan, Ming

doi:10.1016/j.matlet.2014.05.130

Cited by 29 publications

(33 citation statements)

References 9 publications

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“…The size of a critical cluster (N c ) can be determined by classical electrochemical nucleation theory [20,21], (4) where z is the valence of hydrated metal ions, e is the electron charge, is the overpotential, b is the constant which depends on geometrical shape of the cluster. It is clear from Eq.…”

Section: Discussionmentioning

confidence: 99%

Electrodeposition of Single Crystalline Co56.48Ni43.52 Alloy Nanowires in AAO Template

Mukhtar¹

2017

AJEA

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Abstract:Single crystalline cobalt nickel (Co-Ni) alloy nanowires are successfully fabricated using direct current (DC) electrodeposition with in the nanopore of highly ordered anodized aluminum oxide (AAO) template. SEM studies show that the average diameter of the alloy nanowires is approximately equal to 50 nm which corresponds to the pore size of the AAO template. Energy-dispersive X-ray (EDX) analysis confirmed that the Co-Ni alloy nanowires are deposited with 56.48:43.52 atomic ratios. We believe that at high potential the current density of Co nanowires is higher than depositing Ni nanowires which are clear by polarization curves, so content of Co increases in deposited Co 56.48 Ni 43.52 alloy nanowires. Single crystalline Co 56.48 Ni 43.52 alloys can be useful in future to compose and synthesize other metal nanostructures via template-based electrodeposition.

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Section: Discussionmentioning

confidence: 99%

Electrodeposition of Single Crystalline Co56.48Ni43.52 Alloy Nanowires in AAO Template

Mukhtar¹

2017

AJEA

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“…The detailed experimental procedure for preparation of the porous anodic alumina oxide (AAO) templates has been given in our previous paper [18,[20][21][22] × ). The reference electrode was the saturated calomel.…”

Section: Methodsmentioning

confidence: 99%

Silver and Copper Microstructures: The Workfunction’s Effect

Mehmood¹

2017

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Abstract:To understand the growth mechanism of Ag and Cu nanowires we have studied the effect of workfunction on the metal nanowire growth by XRD, SEM and Potentiostat. Under the same potential and overpotential, the metal with a smaller workfunction has a higher current density, i.e. current density for Ag is higher than of Cu nanowires. Likewise metals, the plane with smaller workfunction grows faster than with the larger workfunction, thus the preferential growth plane is (220) for both metals. We argued that the current arises from electrons tunneling from metal surface to hydrated metal and hydrogen ions. The metal with a smaller workfunction has a thinner barrier for tunneling, thus leading to a higher current density. It is found that deposition method have no such effect on the structure of deposited nanowires.

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“…The porous anodic alumina membranes (AAM) templates were prepared using a two-step anodization procedure [11,12] as shown in Fig. 1.…”

Section: Methodsmentioning

confidence: 99%

The Study to Investigate Growth Rate of Metal Nanowires into Anodic Alumina Oxide Arrays via Electrodeposition

Mehmood¹,

Mukhtar²,

Khan³

et al. 2016

AJCHE

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Abstract:To understand the growth mechanism of electrodeposited Fe, Ni and Co, we have studied the effect of workfunction on the metal nanowire growth by SEM and Potentiostat. We found that the current density for deposition of Fe nanowires is higher than of Ni and Co nanowires under the same fixed potential, overpotential, pH, concentration of metal ions and temperature. Using the electrons tunneling theory, we have argued that the current density of the metals depends on the workfunction and width of double layer. The current density increases with decreasing the length of double layer. The current density of metal with a smaller workfunction can be higher than that of metal with a larger workfunction.

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Mechanism for formation of fcc-cobalt nanowires in electrodeposition at ambient temperature

Cited by 29 publications

References 9 publications

Electrodeposition of Single Crystalline Co<sub>56.48</sub>Ni<sub>43.52</sub> Alloy Nanowires in AAO Template

Electrodeposition of Single Crystalline Co<sub>56.48</sub>Ni<sub>43.52</sub> Alloy Nanowires in AAO Template

Silver and Copper Microstructures: The Workfunction’s Effect

The Study to Investigate Growth Rate of Metal Nanowires into Anodic Alumina Oxide Arrays via Electrodeposition

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Mechanism for formation of fcc-cobalt nanowires in electrodeposition at ambient temperature

Cited by 29 publications

References 9 publications

Electrodeposition of Single Crystalline Co&lt;sub&gt;56.48&lt;/sub&gt;Ni&lt;sub&gt;43.52&lt;/sub&gt; Alloy Nanowires in AAO Template

Electrodeposition of Single Crystalline Co&lt;sub&gt;56.48&lt;/sub&gt;Ni&lt;sub&gt;43.52&lt;/sub&gt; Alloy Nanowires in AAO Template

Silver and Copper Microstructures: The Workfunction’s Effect

The Study to Investigate Growth Rate of Metal Nanowires into Anodic Alumina Oxide Arrays via Electrodeposition

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Electrodeposition of Single Crystalline Co<sub>56.48</sub>Ni<sub>43.52</sub> Alloy Nanowires in AAO Template

Electrodeposition of Single Crystalline Co<sub>56.48</sub>Ni<sub>43.52</sub> Alloy Nanowires in AAO Template