The impact of ethylenediaminetetraacetic acid (EDTA) additive on anodization of copper in KHCO3 – hindering Cu2+ re-deposition by EDTA influences morphology and composition of the nanostructures

Stępniowski, Wojciech J.; Wang, Kuo-Kuang; Chandrasekar, Swetha; Paliwoda, Damian; Nowak-Stępniowska, Agata; Misiołek, Wojciech Z.

doi:10.1016/j.jelechem.2020.114245

Cited by 9 publications

(7 citation statements)

References 54 publications

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“…Therefore, for the same base electrolyte and same voltage, depending on the concentration of EDTA, as redeposition hindering agent, various morphologies are obtained. What is even more interesting and in line with the assumptions, the more the EDTA in the electrolyte the less CuO is present in the formed oxide layer (confirmed by Raman Spectroscopy) when compared to Cu 2 O and the less crystalline tenorite (CuO) when compared to cuprite (Cu 2 O) (confirmed by X-ray Diffraction) [63]. It means that redeposition during copper anodizing is also a supplementary source of the Cu 2+ species in the anodically formed nanostructures.…”

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingsupporting

confidence: 62%

“…It is generally accepted that the nanostructured anodic oxides grow as an effect of two driving forces: oxidation of metal, forming passive/anodic layer and field-assisted etching. In the case of copper, re-deposition of Cu 2+ species is also involved [63]. Namely, during copper passivation/anodizing in alkaline media, water soluble copper species like Cu(OH) 4 2− are formed as an effect of metallic copper oxidation and alkaline environment [52].…”

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

“…What is interesting, when the redeposition is blocked, totally different morphology of the formed materials is obtained [63]. For example, when ethylenediaminetetraacetic acid (EDTA) is added into the electrolyte, re-deposition of copper is halted due to the chelate effect (4) [63]:…”

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

“…and different morphology of the anodizing product is obtained. For example, when copper is anodized in 0.01 M KHCO 3 nanorods are formed in wide range of applied voltage [63]. When anodizing is performed in an electrolyte containing 0.01 M KHCO 3 and 10 −3 M EDTA, nanoparticles are formed and in an extreme situation, when electrolyte composed of 0.01 M KHCO 3 and 0.01 M EDTA at 10 V nanopores are formed.…”

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

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Nanostructured Anodic Copper Oxides as Catalysts in Electrochemical and Photoelectrochemical Reactions

et al. 2020

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Recently, nanostructured copper oxides formed via anodizing have been intensively researched due to their potential catalytic applications in emerging issues. The anodic Cu2O and CuO nanowires or nanoneedles are attractive photo- and electrocatalysts since they show wide array of desired electronic and morphological features, such as highly-developed surface area. In CO2 electrochemical reduction reaction (CO2RR) copper and copper-based nanostructures indicate unique adsorption properties to crucial reaction intermediates. Furthermore, anodized copper-based materials enable formation of C2+ hydrocarbons and alcohols with enhanced selectivity. Moreover, anodic copper oxides provide outstanding turnover frequencies in electrochemical methanol oxidation at lowered overpotentials. Therefore, they can be considered as precious metals electrodes substituents in direct methanol fuel cells. Additionally, due to the presence of Cu(III)/Cu(II) redox couple, these materials find application as electrodes for non-enzymatic glucose sensors. In photoelectrochemistry, Cu2O-CuO heterostructures of anodic copper oxides with highly-developed surface area are attractive for water splitting. All the above-mentioned aspects of anodic copper oxides derived catalysts with state-of-the-art background have been reviewed within this paper.

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Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingsupporting

confidence: 62%

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

Section: Morphology and Composition Of Nanostructures Grown By Copper Anodizingmentioning

confidence: 99%

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Nanostructured Anodic Copper Oxides as Catalysts in Electrochemical and Photoelectrochemical Reactions

et al. 2020

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“…Since the aqueous solutions of carbonate salts of alkali metals are weakly alkaline, they have also been used as electrolytes for Cu anodization in addition to the commonly used NaOH or KOH solutions. Stępniowski et al investigated the growth of nanostructured anodic films on Cu in 0.1 mol L -1 K 2 CO 3 [114][115][116] , 0.1 mol L -1 Na 2 CO 3 [117] and 0.01 mol L -1 KHCO 3 [118] solutions, respectively. The resultant anodic films formed in these carbonate-based electrolytes typically had a nanorod-like morphology.…”

Section: Other Nanostructures and Anodization Productsmentioning

confidence: 99%

Anodization fabrication techniques and energy-related applications for nanostructured anodic films on transition metals

2022

Energy Mater

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Nanostructured anodic films on transition metals prepared using the electrochemical anodization method have recently attracted particular attention owing to their extraordinary properties and potential use in a variety of applications. Herein, we provide a thorough review of the anodization fabrication of anodic films with different nanostructures, including nanopores, nanotubes, nanoflowers, nanoneedles and nanowires on transition metals, focusing on the growth processes of nanostructured anodic films on three representative transition metals, namely, iron, copper and zinc. Specific consideration is given to the anodization behavior and formed film nanostructures of these transition metals. We conclude that electrolyte composition plays a key role in influencing the final morphologies of anodic films. Fluoride-containing solutions represent universal electrolytes for forming nanostructured anodic films on transition metals. The main applications of the resulting nanostructured anodic films, especially in energy-related fields, such as photoelectrochemical water splitting and supercapacitors, are also presented and discussed. Finally, we indicate the main challenges associated with the fabrication of anodic films with highly ordered nanostructures and the potential future directions of this field are indicated.

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Antimicrobial properties dependence on the composition and architecture of copper-alumina coatings prepared by plasma electrolytic oxidation (PEO)

Santos

Márquez²,

Buijnsters³

et al. 2023

Applied Surface Science

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The impact of ethylenediaminetetraacetic acid (EDTA) additive on anodization of copper in KHCO3 – hindering Cu2+ re-deposition by EDTA influences morphology and composition of the nanostructures

Cited by 9 publications

References 54 publications

Nanostructured Anodic Copper Oxides as Catalysts in Electrochemical and Photoelectrochemical Reactions

Nanostructured Anodic Copper Oxides as Catalysts in Electrochemical and Photoelectrochemical Reactions

Anodization fabrication techniques and energy-related applications for nanostructured anodic films on transition metals

Antimicrobial properties dependence on the composition and architecture of copper-alumina coatings prepared by plasma electrolytic oxidation (PEO)

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