Observations of copper deposition on functionalized carbon nanotube films

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Observations of copper deposition on functionalized carbon nanotube films. / Hannula, Pyry-Mikko; Aromaa, Jari; Wilson, Benjamin P.; Janas, Dawid; Koziol, Krzysztof; Forsen, Olof; Lundström, Mari.

In: Electrochimica Acta, Vol. 232, 2017, p. 495–504.

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@article{9ab43001c0d94da691203e4d68b7bf55,
title = "Observations of copper deposition on functionalized carbon nanotube films",
abstract = "This research details the spontaneous electroless and electrodeposition of copper onto carbon nanotube (CNT) film from a copper sulfate electrolyte. Inhomogeneous electrodeposition was found to occur on pristine CNT film due to differences in available active nucleation sites and hydrophobic nature of the film. In order to improve the electrochemical response of CNT film, oxidative pre-treatments such as heat treatment and anodization were investigated. These treatments were shown to increase the amount of oxygen containing defects at the surface of CNT film. Incorporation of functional groups were shown to enhance the wetting of the aqueous electrolyte and created a highly active surface suitable for homogenous electrodeposit. Cathodic polarization curves showed that the presence of functional groups decreased the required level of polarization for copper deposition. Nevertheless, after a certain level of functionalization the polarization starts to decrease due to increased resistivity of the CNT film. Oxygen grafted CNT films were also shown to exhibit enhanced adsorption and reduction of copper without applied voltage due to redox replacement reactions, which was observed to increase with enhanced levels of functionalization.",
keywords = "Carbon nanotube film, electrodeposition, functionalization, copper, surface activity",
author = "Pyry-Mikko Hannula and Jari Aromaa and Wilson, {Benjamin P.} and Dawid Janas and Krzysztof Koziol and Olof Forsen and Mari Lundstr{\"o}m",
year = "2017",
doi = "10.1016/j.electacta.2017.03.006",
language = "English",
volume = "232",
pages = "495–504",
journal = "Electrochimica Acta",
issn = "0013-4686",

}

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TY - JOUR

T1 - Observations of copper deposition on functionalized carbon nanotube films

AU - Hannula, Pyry-Mikko

AU - Aromaa, Jari

AU - Wilson, Benjamin P.

AU - Janas, Dawid

AU - Koziol, Krzysztof

AU - Forsen, Olof

AU - Lundström, Mari

PY - 2017

Y1 - 2017

N2 - This research details the spontaneous electroless and electrodeposition of copper onto carbon nanotube (CNT) film from a copper sulfate electrolyte. Inhomogeneous electrodeposition was found to occur on pristine CNT film due to differences in available active nucleation sites and hydrophobic nature of the film. In order to improve the electrochemical response of CNT film, oxidative pre-treatments such as heat treatment and anodization were investigated. These treatments were shown to increase the amount of oxygen containing defects at the surface of CNT film. Incorporation of functional groups were shown to enhance the wetting of the aqueous electrolyte and created a highly active surface suitable for homogenous electrodeposit. Cathodic polarization curves showed that the presence of functional groups decreased the required level of polarization for copper deposition. Nevertheless, after a certain level of functionalization the polarization starts to decrease due to increased resistivity of the CNT film. Oxygen grafted CNT films were also shown to exhibit enhanced adsorption and reduction of copper without applied voltage due to redox replacement reactions, which was observed to increase with enhanced levels of functionalization.

AB - This research details the spontaneous electroless and electrodeposition of copper onto carbon nanotube (CNT) film from a copper sulfate electrolyte. Inhomogeneous electrodeposition was found to occur on pristine CNT film due to differences in available active nucleation sites and hydrophobic nature of the film. In order to improve the electrochemical response of CNT film, oxidative pre-treatments such as heat treatment and anodization were investigated. These treatments were shown to increase the amount of oxygen containing defects at the surface of CNT film. Incorporation of functional groups were shown to enhance the wetting of the aqueous electrolyte and created a highly active surface suitable for homogenous electrodeposit. Cathodic polarization curves showed that the presence of functional groups decreased the required level of polarization for copper deposition. Nevertheless, after a certain level of functionalization the polarization starts to decrease due to increased resistivity of the CNT film. Oxygen grafted CNT films were also shown to exhibit enhanced adsorption and reduction of copper without applied voltage due to redox replacement reactions, which was observed to increase with enhanced levels of functionalization.

KW - Carbon nanotube film

KW - electrodeposition

KW - functionalization

KW - copper

KW - surface activity

U2 - 10.1016/j.electacta.2017.03.006

DO - 10.1016/j.electacta.2017.03.006

M3 - Article

VL - 232

SP - 495

EP - 504

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

ER -

ID: 11287873