Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids
Abstract The application of ionic liquids for the dissolution of metal oxides is a promising field for the development of more energy‐ and resource‐efficient metallurgical processes. Using such solutions for the production of valuable chemicals or electrochemical metal deposition requires a detailed...
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2021-02-01
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Online Access: | https://doi.org/10.1002/open.202000231 |
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doaj-791d3eb7c6434b2483197051b91ebe9c2021-03-10T10:24:31ZengWiley-VCHChemistryOpen2191-13632021-02-011029710910.1002/open.202000231Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic LiquidsJanine Richter0Maximilian Knies1Prof. Dr. Michael Ruck2Faculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden GermanyFaculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden GermanyFaculty of Chemistry and Food Chemistry Technische Universität Dresden 01062 Dresden GermanyAbstract The application of ionic liquids for the dissolution of metal oxides is a promising field for the development of more energy‐ and resource‐efficient metallurgical processes. Using such solutions for the production of valuable chemicals or electrochemical metal deposition requires a detailed understanding of the chemical system and the factors influencing it. In the present work, several compounds are reported that crystallize after the dissolution of copper(II) oxide in the ionic liquid [Hbet][NTf2]. Dependent on the initial amount of chloride, the reaction temperature and the purity of the reagent, copper crystallizes in complexes with varying coordination geometries and ligands. Subsequently, the influence of these different complex species on electrochemical properties is shown. For the first time, copper is deposited from the ionic liquid [Hbet][NTf2], giving promising opportunities for more resource‐efficient copper plating. The copper coatings were analyzed by SEM and EDX measurements. Furthermore, a mechanism for the decomposition of [Hbet][NTf2] in the presence of chloride is suggested and supported by experimental evidence.https://doi.org/10.1002/open.202000231coppercoordination compoundselectrodepositionHunsdieker reactionionic liquids |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Janine Richter Maximilian Knies Prof. Dr. Michael Ruck |
spellingShingle |
Janine Richter Maximilian Knies Prof. Dr. Michael Ruck Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids ChemistryOpen copper coordination compounds electrodeposition Hunsdieker reaction ionic liquids |
author_facet |
Janine Richter Maximilian Knies Prof. Dr. Michael Ruck |
author_sort |
Janine Richter |
title |
Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids |
title_short |
Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids |
title_full |
Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids |
title_fullStr |
Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids |
title_full_unstemmed |
Speciation of Copper(II)‐Betaine Complexes as Starting Point for Electrochemical Copper Deposition from Ionic Liquids |
title_sort |
speciation of copper(ii)‐betaine complexes as starting point for electrochemical copper deposition from ionic liquids |
publisher |
Wiley-VCH |
series |
ChemistryOpen |
issn |
2191-1363 |
publishDate |
2021-02-01 |
description |
Abstract The application of ionic liquids for the dissolution of metal oxides is a promising field for the development of more energy‐ and resource‐efficient metallurgical processes. Using such solutions for the production of valuable chemicals or electrochemical metal deposition requires a detailed understanding of the chemical system and the factors influencing it. In the present work, several compounds are reported that crystallize after the dissolution of copper(II) oxide in the ionic liquid [Hbet][NTf2]. Dependent on the initial amount of chloride, the reaction temperature and the purity of the reagent, copper crystallizes in complexes with varying coordination geometries and ligands. Subsequently, the influence of these different complex species on electrochemical properties is shown. For the first time, copper is deposited from the ionic liquid [Hbet][NTf2], giving promising opportunities for more resource‐efficient copper plating. The copper coatings were analyzed by SEM and EDX measurements. Furthermore, a mechanism for the decomposition of [Hbet][NTf2] in the presence of chloride is suggested and supported by experimental evidence. |
topic |
copper coordination compounds electrodeposition Hunsdieker reaction ionic liquids |
url |
https://doi.org/10.1002/open.202000231 |
work_keys_str_mv |
AT janinerichter speciationofcopperiibetainecomplexesasstartingpointforelectrochemicalcopperdepositionfromionicliquids AT maximilianknies speciationofcopperiibetainecomplexesasstartingpointforelectrochemicalcopperdepositionfromionicliquids AT profdrmichaelruck speciationofcopperiibetainecomplexesasstartingpointforelectrochemicalcopperdepositionfromionicliquids |
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