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Guan Y, Kümper J, Mürtz SD, Kumari S, Hausoul PJC, Palkovits R, Sautet P. Origin of copper dissolution under electrocatalytic reduction conditions involving amines. Chem Sci 2024:d4sc01944j. [PMID: 39170715 PMCID: PMC11331451 DOI: 10.1039/d4sc01944j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 08/02/2024] [Indexed: 08/23/2024] Open
Abstract
Cu dissolution has been identified as the dominant process that causes cathode degradation and losses even under cathodic conditions involving methylamine. Despite extensive experimental research, our fundamental and theoretical understanding of the atomic-scale mechanism for Cu dissolution under electrochemical conditions, eventually coupled with surface restructuring processes, is limited. Here, driven by the observation that the working Cu electrode is corroded using mixtures of acetone and methylamine even under reductive potential conditions (-0.75 V vs. RHE), we employed Grand Canonical density functional theory to understand this dynamic process under potential from a microscopic perspective. We show that amine ligands in solution directly chemisorb on the electrode, coordinate with the metal center, and drive the rearrangement of the copper surface by extracting Cu as adatoms in low coordination positions, where other amine ligands can coordinate and stabilize a surface copper-ligand complex, finally forming a detached Cu-amine cationic complex in solution, even under negative potential conditions. Calculations predict that dissolution would occur for a potential of -1.1 V vs. RHE or above. Our work provides a fundamental understanding of Cu dissolution facilitated by surface restructuring in amine solutions under electroreduction conditions, which is required for the rational design of durable Cu-based cathodes for electrochemical amination or other amine involving reduction processes.
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Affiliation(s)
- Yani Guan
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles Los Angeles CA 90095 USA
| | - Justus Kümper
- Chair of Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University Worringerweg 2 52074 Aachen Germany
| | - Sonja D Mürtz
- Chair of Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University Worringerweg 2 52074 Aachen Germany
| | - Simran Kumari
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles Los Angeles CA 90095 USA
| | - Peter J C Hausoul
- Chair of Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University Worringerweg 2 52074 Aachen Germany
| | - Regina Palkovits
- Chair of Heterogeneous Catalysis and Technical Chemistry, RWTH Aachen University Worringerweg 2 52074 Aachen Germany
- Institute for Sustainable Hydrogen Economy (INW-2), Forschungszentrum Jülich Am Brainergy Park 4 52428 Jülich Germany
| | - Philippe Sautet
- Department of Chemical and Biomolecular Engineering, University of California Los Angeles Los Angeles CA 90095 USA
- Department of Chemistry and Biochemistry, University of California Los Angeles Los Angeles CA 90095 USA
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Da-yang TE, Lai CH. Potential energy surfaces of the Cu2+(NH3)n=1−10 clusters in solvent phase: A DFT study. Chem Phys 2023. [DOI: 10.1016/j.chemphys.2023.111902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
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3
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Da-yang TE, Fifen JJ, Conradie J, Conradie MM. Structures, temperature effect, binding and clustering energies of Cu2+(MeOH)n=1-8 clusters and extrapolations. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Kobrak MN, Nykypanchuk D, Janssen CHC. Relationship between liquid nanoscale structure in solvents and the strength of the Hofmeister effect in extraction experiments. Phys Chem Chem Phys 2021; 23:6266-6277. [PMID: 33735349 DOI: 10.1039/d0cp05973k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we used mixtures of carboxylic acids and amines as solvents for the liquid-liquid extraction of copper salts with various anions from aqueous phase, and systematically varied the acid/amine ratio to determine its influence on extraction efficiency. The organic phases resulting from these extraction experiments were studied using small-angle X-ray scattering (SAXS), establishing a connection between the extraction process and the liquid structure. A relationship is found between the extent of extraction for the metal salt, the strength of the Hofmeister effect of the anions of the salt, and the characteristic lengthscale of the observed liquid nanoscale structure before and after extraction.
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Affiliation(s)
- Mark N Kobrak
- Department of Chemistry, Brooklyn College of the City University of New York, 2900 Bedford Ave., Brooklyn, NY 11210, USA and Department of Chemistry, Graduate Center of the City University of New York, 365 Fifth Ave., New York, NY 10016, USA
| | - Dmytro Nykypanchuk
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Camiel H C Janssen
- Departamento de Ingeniería Química, Facultad de Química, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Coyoacán, Cd. Universitaria, 04510 Ciudad de México, Mexico.
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Da-yang TE, Fifen JJ, Malloum A, Lahmar S, Nsangou M, Conradie J. Structures of the solvated copper(ii) ion in ammonia at various temperatures. NEW J CHEM 2020. [DOI: 10.1039/c9nj05169d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigated theoretically the structures and relative stabilities of the solvated copper(ii) ion in ammonia, Cu2+(NH3)n, n = 1–10.
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Affiliation(s)
| | - Jean Jules Fifen
- Department of Physics
- Faculty of Science
- The University of Ngaoundere
- Ngaoundere
- Cameroon
| | - Alhadji Malloum
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
- Department of Physics
| | - Souad Lahmar
- Laboratoire de Spectroscopie Atomique Moléculaire et Applications
- Faculté des Sciences de Tunis
- Université de Tunis El Manar
- Tunis
- Tunisia
| | - Mama Nsangou
- University of Maroua
- Maroua
- Cameroon
- Department of Physics
- Faculty of Science
| | - Jeanet Conradie
- Department of Chemistry
- University of the Free State
- Bloemfontein
- South Africa
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6
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Saputri WD, Wijaya K, Pranowo HD, Hofer TS. The Jahn-Teller effect in mixed aqueous solution: the solvation of Cu2+ in 18.6% aqueous ammonia obtained from ab initio quantum mechanical charge field molecular dynamics. PURE APPL CHEM 2019. [DOI: 10.1515/pac-2018-1115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
The solvation structure and dynamics of Cu2+ in 18.6 % aqueous ammonia have been investigated using an ab initio quantum mechanical charge field molecular dynamics (QMCF MD) simulation approach at the Hartree–Fock (HF) level of theory applying the LANL2DZ ECP and Dunning DZP basis sets for Cu2+, ammonia and water, respectively. During a simulation time of 20 ps, only NH3 molecules are observed within the first solvation shell of Cu2+, resulting in the formation of an octahedral [Cu(NH3)6]2+ complex. While no exchange of these ligands with the second solvation shell are observed along the simulation, the monitoring of the associated N-Ntrans distances highlight the dynamics of the associated Jahn-Teller distortions, showing on average 2 elongated axial (2.19 Å) and 4 equatorial Cu–N bonds (2.39 Å). The observed structural properties are found in excellent agreement with experimental studies. In addition, an NBO analysis was carried out, confirming the strong electrostatic character of the Cu2+–NH3 interaction.
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Affiliation(s)
- Wahyu Dita Saputri
- Department of Chemistry , Universitas Gadjah Mada , Yogyakarta , Indonesia
- Austrian-Indonesian Centre for Computational Chemistry , Universitas Gadjah Mada , Yogyakarta , Indonesia
| | - Karna Wijaya
- Department of Chemistry , Universitas Gadjah Mada , Yogyakarta , Indonesia
| | - Harno Dwi Pranowo
- Department of Chemistry , Universitas Gadjah Mada , Yogyakarta , Indonesia
- Austrian-Indonesian Centre for Computational Chemistry , Universitas Gadjah Mada , Yogyakarta , Indonesia
| | - Thomas S. Hofer
- University of Innsbruck , Theoretical Chemistry Division , Innsbruck , Austria
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Investigation of the preferential solvation and dynamical properties of Cu+ in 18.6% aqueous ammonia solution using ab initio quantum mechanical charge field (QMCF) molecular dynamics and NBO analysis. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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8
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Qiu X, Hu H, Yang J, Cheng Z, Ji G. A theoretical investigation on the selective extraction of Cu(II) from Ni(II) by 2-aminomethylpyridine derivatives: A DFT study. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.10.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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Janssen CH, Macías-Ruvalcaba NA, Aguilar-Martínez M, Kobrak MN. Copper extraction using protic ionic liquids: Evidence of the Hofmeister effect. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.05.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Insights into coextraction of water and ammonia with nickel(II) through structural investigation. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2015.11.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fu M, Hu J, Li Y, Song Y, Hu H, Chen Q. A novel strategy achieving enrichment of metal values from and into ammoniacal solutions. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.07.035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Wang D, Chen Q, Hu J, Fu M, Luo Y. High Flux Recovery of Copper(II) from Ammoniacal Solution with Stable Sandwich Supported Liquid Membrane. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00297] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Duo Wang
- College
of Chemistry and
Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Qiyuan Chen
- College
of Chemistry and
Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Jiugang Hu
- College
of Chemistry and
Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Mingbo Fu
- College
of Chemistry and
Chemical Engineering, Central South University, Changsha, Hunan 410083, China
| | - Yaling Luo
- College
of Chemistry and
Chemical Engineering, Central South University, Changsha, Hunan 410083, China
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Tsipis AC. DFT/TDDFT insights into the chemistry, biochemistry and photophysics of copper coordination compounds. RSC Adv 2014. [DOI: 10.1039/c4ra04921g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Highlighting the recent progress in DFT/TDDFT application to coordination chemistry of copper.
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Affiliation(s)
- Athanassios C. Tsipis
- Laboratory of Inorganic and General Chemistry
- Department of Chemistry
- University of Ioannina
- 451 10 Ioannina
- Greece
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