1
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Sargeant E, Rodriguez P, Calle-Vallejo F. Cation Effects on the Adsorbed Intermediates of CO 2 Electroreduction Are Systematic and Predictable. ACS Catal 2024; 14:8814-8822. [PMID: 38868103 PMCID: PMC11165452 DOI: 10.1021/acscatal.4c00727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 04/16/2024] [Accepted: 05/07/2024] [Indexed: 06/14/2024]
Abstract
The electrode-electrolyte interface, and in particular the nature of the cation, has considerable effects on the activity and product selectivity of the electrochemical reduction of CO2. Therefore, to improve the electrocatalysis of this challenging reaction, it is paramount to ascertain whether cation effects on adsorbed intermediates are systematic. Here, DFT calculations are used to show that the effects of K+, Na+, and Mg2+, on single carbon CO2 reduction intermediates can either be stabilizing or destabilizing depending on the metal and the adsorbate. Because systematic trends are observed, cation effects can be accurately predicted in simple terms for a wide variety of metals, cations and adsorbed species. These results are then applied to the reduction of CO2 to CO on four different catalytic surfaces (Au, Ag, Cu, Pd) and activation of weak-binding metals is consistently observed by virtue of the stabilization of the key intermediate *COOH.
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Affiliation(s)
- Elizabeth Sargeant
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
- Department
of Materials Science and Chemical Physics & Institute of Theoretical
and Computational Chemistry (IQTC), University
of Barcelona, Barcelona 08028, Spain
| | - Paramaconi Rodriguez
- School
of Chemistry, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
- Centre
for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Vitoria-Gasteiz 01510, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza de Euskadi 5, Bilbao 48009, Spain
| | - Federico Calle-Vallejo
- Department
of Materials Science and Chemical Physics & Institute of Theoretical
and Computational Chemistry (IQTC), University
of Barcelona, Barcelona 08028, Spain
- IKERBASQUE,
Basque Foundation for Science, Plaza de Euskadi 5, Bilbao 48009, Spain
- Nano-Bio
Spectroscopy Group and European Theoretical Spectroscopy Facility
(ETSF), Department of Advanced Materials and Polymers: Physics, Chemistry
and Technology, University of the Basque
Country UPV/EHU, Avenida Tolosa 72, San Sebastian 20018, Spain
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2
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Jia Y, Li D, Liu C, Song T, Duan L, Li F, Li F, Ji Y, Sun L, Fan K. Regulating Cu Oxidation State for Electrocatalytic CO 2 Conversion into CO with Near-Unity Selectivity via Oxygen Spillover. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402537. [PMID: 38711307 DOI: 10.1002/smll.202402537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/28/2024] [Indexed: 05/08/2024]
Abstract
Cu-based catalysts are the most intensively studied in the field of electrocatalytic CO2 reduction reaction (CO2RR), demonstrating the capacity to yield diverse C1 and C2+ products albeit with unsatisfactory selectivity. Manipulation of the oxidation state of Cu sites during CO2RR process proves advantageous in modulating the selectivity of productions, but poses a formidable challenge. Here, an oxygen spillover strategy is proposed to enhance the oxidation state of Cu during CO2RR by incorporating the oxygen donor Sb2O4. The Cu-Sb bimetallic oxide catalyst attains a remarkable CO2-to-CO selectivity approaching unity, in stark contrast to the diverse product distribution observed with bare CuO. The exceptional Faradaic efficiency of CO can be maintained across a wide range of potential windows of ≈700 mV in 1 m KOH, and remains independent of the Cu/Sb ratio (ranging from 0.1:1 to 10:1). Correlative calculations and experimental results reveal that oxygen spillover from Sb2O4 to Cu sites maintains the relatively high valence state of Cu during CO2RR, which diminishes the binding strength of *CO, thereby achieving heightened selectivity in CO production. These findings propose the role of oxygen spillover in CO2RR over Cu-based catalysts, and shed light on the rational design of highly selective CO2 reduction catalysts.
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Affiliation(s)
- Yufei Jia
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Dekang Li
- State Key Laboratory of Fine Chemicals, Institute of Coal Chemical Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Chang Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Tao Song
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Lele Duan
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, P. R. China
| | - Fusheng Li
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Fei Li
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Yongfei Ji
- School of Chemistry and Chemical Engineering, Higher Education Mega Center, Guangzhou University, No. 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
- Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry, School of Science, Westlake University, Hangzhou, 310024, P. R. China
| | - Ke Fan
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Institute for Energy Science and Technology, Dalian University of Technology, Dalian, 116024, P. R. China
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3
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Askari MJ, Kallick JD, McCrory CCL. Selective Reduction of Aqueous Nitrate to Ammonium with an Electropolymerized Chromium Molecular Catalyst. J Am Chem Soc 2024; 146:7439-7455. [PMID: 38465608 DOI: 10.1021/jacs.3c12783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Nitrate (NO3-) is a common nitrogen-containing contaminant in agricultural, industrial, and low-level nuclear wastewater that causes significant environmental damage. In this work, we report a bioinspired Cr-based molecular catalyst incorporated into a redox polymer that selectively and efficiently reduces aqueous NO3- to ammonium (NH4+), a desirable value-added fertilizer component and industrial precursor, at rates of ∼0.36 mmol NH4+ mgcat-1 h-1 with >90% Faradaic efficiency for NH4+. The NO3- reduction reaction occurs through a cascade catalysis mechanism involving the stepwise reduction of NO3- to NH4+ via observed NO2- and NH2OH intermediates. To our knowledge, this is one of the first examples of a molecular catalyst, homogeneous or heterogenized, that is reported to reduce aqueous NO3- to NH4+ with rates and Faradaic efficiencies comparable to those of state-of-the-art solid-state electrocatalysts. This work highlights a promising and previously unexplored area of electrocatalyst research using polymer-catalyst composites containing complexes with oxophilic transition metal active sites for electrochemical nitrate remediation with nutrient recovery.
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Affiliation(s)
- Maiko J Askari
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Jeremy D Kallick
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Charles C L McCrory
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
- Macromolecular Science and Engineering Program, University of Michigan, Ann Arbor, Michigan 48109, United States
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4
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Artmann E, Schmider T, Jacob T, Engstfeld AK. Facet-Dependent Formation and Adhesion of Au Oxide and Nanoporous Au on Poly-Oriented Au Single Crystals. Chemphyschem 2023; 24:e202300428. [PMID: 37435757 DOI: 10.1002/cphc.202300428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 07/13/2023]
Abstract
Nanoporous Au (NPG) has different properties compared to bulk Au, making it an interesting material for numerous applications. To modify the structure of NPG films for specific applications, e. g., the porosity, thickness, and homogeneity of the films, a fundamental understanding of the structure formation is essential. Here, we focus on NPG prepared via electrochemical reduction from Au oxide formed during high voltage (HV) electrolysis on poly-oriented Au single crystal (Au POSC) electrodes. These POSCs consist of a metal bead, with faces with different crystallographic orientations and allow screening of the influence of crystallographic orientation on the structure formation for different facets in one experiment. The HV electrolysis is performed between 100 ms and 30 s at 300 V and 540 V. The amount of Au oxide formed is determined by electrochemical measurements and the structural properties are investigated by scanning electron and optical microscopy. We show that the formation of Au oxide is mostly independent of the crystallographic orientation, except for thick layers, while the macroscopic structure of the NPG films depends on experimental parameters such as the Au oxide precursor thickness and the crystallographic orientation of the substrate. Possible reasons for the frequently observed exfoliation of the NPG films are discussed.
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Affiliation(s)
- Evelyn Artmann
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
| | - Tobias Schmider
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
| | - Timo Jacob
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
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5
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Yang J, Kang X, Jiao J, Xing X, Yin Y, Jia S, Chu M, Han S, Xia W, Wu H, He M, Han B. Ternary Ionic-Liquid-Based Electrolyte Enables Efficient Electro-reduction of CO 2 over Bulk Metal Electrodes. J Am Chem Soc 2023; 145:11512-11517. [PMID: 37196054 DOI: 10.1021/jacs.3c03259] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Using bulk metals as catalysts to get high efficiency in electro-reduction of CO2 is ideal but challenging. Here, we report the coupling of bulk metal electrodes and a ternary ionic-liquid-based electrolyte, 1-butyl-3-methylimidazolium tetrafluoroborate/1-dodecyl-3-methylimidazolium tetrafluoroborate/MeCN to realize highly efficient electro-reduction of CO2 to CO. Over various bulk metal electrodes, the ternary electrolyte not only increases the current density but also suppresses the hydrogen evolution reaction to obtain a high Faradaic efficiency (FE) toward CO. FECO could maintain ∼100% over a wide potential range, and metal electrodes showed very high stability in the ternary electrolyte. It is demonstrated that the aggregation behavior of the ternary electrolyte and the arrangement of two kinds of IL cations with different chain lengths in the electrochemical double layer not only increase the wettability to electrode and CO2 adsorption but also extend the diffusion channel of H+, rendering the high current density and FECO.
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Affiliation(s)
- Jiahao Yang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xinchen Kang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiapeng Jiao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xueqing Xing
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Yaoyu Yin
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuaiqiang Jia
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Mengen Chu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Shitao Han
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Wei Xia
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Haihong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Institute of Eco-Chongming, 20 Cuiniao Road, Chenjia Town, Chongming District, Shanghai 202162, China
| | - Mingyuan He
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Institute of Eco-Chongming, 20 Cuiniao Road, Chenjia Town, Chongming District, Shanghai 202162, China
| | - Buxing Han
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemistry, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute of Eco-Chongming, 20 Cuiniao Road, Chenjia Town, Chongming District, Shanghai 202162, China
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6
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Zhang B, Yang Z, Yan C, Xue Z, Mu T. Operando Forming of Lattice Vacancy Defect in Ultrathin Crumpled NiVW-Layered Metal Hydroxides Nanosheets for Valorization of Biomass. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207236. [PMID: 36670073 DOI: 10.1002/smll.202207236] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/25/2022] [Indexed: 06/17/2023]
Abstract
The 2D layered metal hydroxides (LMHs) have been developed for electrooxidation of 5-hydroxymethylfurfural (HMF). In this work, an effective strategy is proposed to tailor the electronic structure of active sites at the atomic level, which is by introducing defects into the lattice structure. As an example, a series of ultrathin crumpled ternary NiVW-LMH electrocatalysts with abundant lattice vacancies (denoted as NiVWv -LMH) are prepared in this way. The introduction of tungsten (W) endows the catalyst with a special crumpled structure, which promotes the generation of lattice vacancies and thus exposes more unsaturated Ni activity sites. The NiVWv -LMH displays superb performance in the electrooxidation of HMF. The Tafel slope for electrodehydrogenation of Ni2+ OH bond to Ni(OH)O species is 12.04 mV dec-1 . The current density at 1.43 V versus reversible hydrogen electrode (RHE) toward the oxidation reaction of HMF reaches about 193 mA cm-2 , which is better than most of the common electrocatalysts, with an 5.37-fold improvement compared with Ni(OH)2 electrode. The preparation strategy demonstrates in this work can be useful for developing highly efficient electrocatalysts.
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Affiliation(s)
- Baolong Zhang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Zhaohui Yang
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, China
| | - Chuanyu Yan
- Department of Chemical Engineering and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Zhimin Xue
- Beijing Key Laboratory of Lignocellulosic Chemistry, College of Materials Science and Technology, Beijing Forestry University, Beijing, 100083, China
| | - Tiancheng Mu
- Key Laboratory of Advanced Light Conversion Materials and Biophotonics, Department of Chemistry, Renmin University of China, Beijing, 100872, China
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7
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Artmann E, Forschner L, Schüttler KM, Al-Shakran M, Jacob T, Engstfeld AK. Nanoporous Au Formation on Au Substrates via High Voltage Electrolysis. Chemphyschem 2023; 24:e202200645. [PMID: 36328970 DOI: 10.1002/cphc.202200645] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Nanoporous Au (NPG) films have promising properties, making them suitable for various applications in (electro)catalysis or (bio)sensing. Tuning the structural properties, such as the pore size or the surface-to-volume ratio, often requires complex starting materials such as alloys, multiple synthesis steps, lengthy preparation procedures or a combination of these factors. Here we present an approach that circumvents these difficulties, enabling for a rapid and controlled preparation of NPG films starting from a bare Au electrode. In a first approach a Au oxide film is prepared by high voltage (HV) electrolysis in a KOH solution, which is then reduced either electrochemically or in the presence of H2 O2 . The resulting NPG structures and their electrochemically active surface areas strongly depend on the reduction procedure, the concentration and temperature of the H2 O2 -containing KOH solution, as well as the applied voltage and temperature during HV electrolysis. Secondly, the NPG film can be prepared directly by applying voltages that result in anodic contact glow discharge electrolysis (aCGDE). By carefully adjusting the corresponding parameters, the surface area of the final NPG film can be specifically controlled. The structural properties of the electrodes are investigated by means of XPS, SEM and electrochemical methods.
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Affiliation(s)
- Evelyn Artmann
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
| | - Lukas Forschner
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
| | | | | | - Timo Jacob
- Institute of Electrochemistry, Ulm University, D-89081, Ulm, Germany
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8
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Liu X, Monteiro MCO, Koper MTM. Interfacial pH measurements during CO 2 reduction on gold using a rotating ring-disk electrode. Phys Chem Chem Phys 2023; 25:2897-2906. [PMID: 36633182 DOI: 10.1039/d2cp05515e] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Insights into how to control the activity and selectivity of the electrochemical CO2 reduction reaction are still limited because of insufficient knowledge of the reaction mechanism and kinetics, which is partially due to the lack of information on the interfacial pH, an important parameter for proton-coupled reactions like CO2 reduction. Here, we used a reliable and sensitive pH sensor combined with the rotating ring-disk electrode technique, in which a functionalized Au ring electrode works as a real-time detector of the OH- generated during the CO2 reduction reaction at a gold disk electrode. Variations of the interfacial pH due to both electrochemical and homogeneous reactions are mapped and the correlation of the interfacial pH with these reactions is inferred. The interfacial pH near the disk electrode increases from 7 to 12 with increasing current density, with a sharp increase at around -0.5 V vs. RHE, which indicates a change of the dominant buffering species. Through scan rate-dependent voltammetry and chronopotentiometry experiments, the homogenous reactions are shown to reach equilibrium within the time scale of the pH measurements, so that the interfacial concentrations of different carbonaceous species can be calculated using equilibrium constants. Furthermore, pH measurements were also performed under different conditions to disentangle the relationship between the interfacial pH and other electrolyte effects. The buffer effect of alkali metal cations is confirmed, showing that weakly hydrated cations lead to less pronounced pH gradients. Finally, we probe to which extent increasing mass transport and the electrolyte buffer capacity can aid in suppressing the increase of the interfacial pH, showing that the buffer capacity is the dominant factor in suppressing interfacial pH variations.
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Affiliation(s)
- Xuan Liu
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands.
| | - Mariana C O Monteiro
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands.
| | - Marc T M Koper
- Leiden Institute of Chemistry, Leiden University, 2300 RA Leiden, The Netherlands.
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9
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Koh ES, Geiger S, Gunnarson A, Imhof T, Meyer GM, Paciok P, Etzold BJM, Rose M, Schüth F, Ledendecker M. Influence of Support Material on the Structural Evolution of Copper during Electrochemical CO
2
Reduction. ChemElectroChem 2023. [DOI: 10.1002/celc.202200924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ezra S. Koh
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Simon Geiger
- Department of Technical Thermodynamics Deutsches Zentrum für Luft-und Raumfahrt, Stuttgart Pfaffenwaldring 38–40 70569 Stuttgart
| | - Alexander Gunnarson
- Department of Heterogeneous Catalysis Max Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Timo Imhof
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Gregor M. Meyer
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Paul Paciok
- Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Bastian J. M. Etzold
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Marcus Rose
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
| | - Ferdi Schüth
- Department of Heterogeneous Catalysis Max Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Marc Ledendecker
- Technical University of Darmstadt Department of Chemistry Ernst-Berl-Institut für Technische und Makromolekulare Chemie 64287 Darmstadt Germany
- Current address: Technical University of Munich Department of Sustainable Energy Materials 94315 Straubing
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10
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Ma Z, Yang Z, Lai W, Wang Q, Qiao Y, Tao H, Lian C, Liu M, Ma C, Pan A, Huang H. CO 2 electroreduction to multicarbon products in strongly acidic electrolyte via synergistically modulating the local microenvironment. Nat Commun 2022; 13:7596. [PMID: 36494381 PMCID: PMC9734127 DOI: 10.1038/s41467-022-35415-x] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Electrochemical CO2 reduction to multicarbon products faces challenges of unsatisfactory selectivity, productivity, and long-term stability. Herein, we demonstrate CO2 electroreduction in strongly acidic electrolyte (pH ≤ 1) on electrochemically reduced porous Cu nanosheets by combining the confinement effect and cation effect to synergistically modulate the local microenvironment. A Faradaic efficiency of 83.7 ± 1.4% and partial current density of 0.56 ± 0.02 A cm-2, single-pass carbon efficiency of 54.4%, and stable electrolysis of 30 h in a flow cell are demonstrated for multicarbon products in a strongly acidic aqueous electrolyte consisting of sulfuric acid and KCl with pH ≤ 1. Mechanistically, the accumulated species (e.g., K+ and OH-) on the Helmholtz plane account for the selectivity and activity toward multicarbon products by kinetically reducing the proton coverage and thermodynamically favoring the CO2 conversion. We find that the K+ cations facilitate C-C coupling through local interaction between K+ and the key intermediate *OCCO.
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Affiliation(s)
- Zesong Ma
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Zhilong Yang
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Wenchuan Lai
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Qiyou Wang
- grid.216417.70000 0001 0379 7164State Key Laboratory of Powder Metallurgy, School of Physical and Electronics, Central South University, Changsha, Hunan 410083 China
| | - Yan Qiao
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Haolan Tao
- grid.28056.390000 0001 2163 4895State Key Laboratory of Chemical Engineering and Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237 China
| | - Cheng Lian
- grid.28056.390000 0001 2163 4895State Key Laboratory of Chemical Engineering and Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237 China
| | - Min Liu
- grid.216417.70000 0001 0379 7164State Key Laboratory of Powder Metallurgy, School of Physical and Electronics, Central South University, Changsha, Hunan 410083 China
| | - Chao Ma
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Anlian Pan
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China
| | - Hongwen Huang
- grid.67293.39College of Materials Science and Engineering, Hunan University, Changsha, Hunan 410082 China ,grid.67293.39Shenzhen Research Institute of Hunan University, Shenzhen, Guangdong 518055 China
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11
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Yu T, Zhou X, Chen Y, Chen J, Yuan S, Zhang Z, Qian L, Li S. Robust catalysis of hierarchically nanoporous gold for CO2 electrochemical reduction. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Mubarak S, Dhamodharan D, Byun HS, Arya S, Pattanayak DK. Effective photoelectrocatalytic reduction of CO2 to formic acid using controllably annealed TiO2 nanoparticles derived from porous structured Ti foil. J CO2 UTIL 2022. [DOI: 10.1016/j.jcou.2022.102152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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13
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Boosting the Electrocatalytic CO2 Reduction Reaction by Nanostructured Metal Materials via Defects Engineering. NANOMATERIALS 2022; 12:nano12142389. [PMID: 35889615 PMCID: PMC9324018 DOI: 10.3390/nano12142389] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/08/2022] [Accepted: 07/09/2022] [Indexed: 12/14/2022]
Abstract
Electrocatalytic CO2 reduction reaction (CO2RR) is one of the most effective methods to convert CO2 into useful fuels. Introducing defects into metal nanostructures can effectively improve the catalytic activity and selectivity towards CO2RR. This review provides the recent progress on the use of metal nanomaterials with defects towards electrochemical CO2RR and defects engineering methods. Accompanying these ideas, we introduce the structure of defects characterized by electron microscopy techniques as the characterization and analysis of defects are relatively difficult. Subsequently, we present the intrinsic mechanism of how the defects affect CO2RR performance. Finally, to promote a wide and deep study in this field, the perspectives and challenges concerning defects engineering in metal nanomaterials towards CO2RR are put forward.
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Marcandalli G, Monteiro MCO, Goyal A, Koper MTM. Electrolyte Effects on CO 2 Electrochemical Reduction to CO. Acc Chem Res 2022; 55:1900-1911. [PMID: 35772054 PMCID: PMC9301915 DOI: 10.1021/acs.accounts.2c00080] [Citation(s) in RCA: 58] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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The electrochemical reduction of CO2 (CO2RR) constitutes
an alternative to fossil fuel-based technologies for the production
of fuels and commodity chemicals. Yet the application of CO2RR electrolyzers
is hampered by low energy and Faradaic efficiencies. Concomitant electrochemical
reactions, like hydrogen evolution (HER), lower the selectivity, while
the conversion of CO2 into (bi)carbonate through solution
acid–base reactions induces an additional concentration overpotential.
During CO2RR in aqueous media, the local pH becomes more alkaline
than the bulk causing an additional consumption of CO2 by
the homogeneous reactions. The latter effect, in combination with
the low solubility of CO2 in aqueous electrolytes (33 mM),
leads to a significant depletion in CO2 concentration at
the electrode surface. The nature of the electrolyte, in terms
of pH and cation identity,
has recently emerged as an important factor to tune both the energy
and Faradaic efficiency. In this Account, we summarize the recent
advances in understanding electrolyte effects on CO2RR to CO in aqueous
solutions, which is the first, and crucial, step to further reduced
products. To compare literature findings in a meaningful way, we focus
on results reported under well-defined mass transport conditions and
using online analytical techniques. The discussion covers the molecular-level
understanding of the effects of the proton donor, in terms of the
suppression of the CO2 gradient vs enhancement of HER at
a given mass transport rate and of the cation, which is crucial in
enabling both CO2RR and HER. These mechanistic insights are then translated
into possible implications for industrially relevant cell geometries
and current densities.
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Affiliation(s)
- Giulia Marcandalli
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Mariana C O Monteiro
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Akansha Goyal
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Marc T M Koper
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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