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Li C, Ziller JW, Barlow JM, Yang JY. Aqueous Electrochemical and pH Studies of Redox-Active Guanidino Functionalized Aromatics for CO 2 Capture. ACS ORGANIC & INORGANIC AU 2024; 4:387-394. [PMID: 39132019 PMCID: PMC11311035 DOI: 10.1021/acsorginorgau.3c00066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 08/13/2024]
Abstract
Escalating levels of carbon dioxide (CO2) in the atmosphere have motivated interest in CO2 capture and concentration from dilute streams. A guanidino-functionalized aromatic 1,4-bis(tetramethylguanidino)benzene (1,4-btmgb) was evaluated both as a redox-active sorbent and as a pH swing mediator for electrochemical CO2 capture and concentration. Spectroscopic and crystallographic studies demonstrate that 1,4-btmgb reacts with CO2 in water to form 1,4-btmgbH2(HCO3 -)2. The product suggests that 1,4-btmgb could be used in an aqueous redox pH swing cycle for the capture and concentration of CO2. The synthesis and characterization of the mono- and diprotonated forms (1,4-btmgbH+ and 1,4-btmgbH2 2+) and their pK a values were measured to be 13.5 and 11.0 in water, respectively. Electrochemical pH swing experiments indicate the formation of an intermediate radical species and other degradation pathways, which ultimately inhibited fully reversible redox-induced pH cycling.
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Affiliation(s)
- Clarabella
J. Li
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Joseph W. Ziller
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Jeffrey M. Barlow
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
| | - Jenny Y. Yang
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697-2025, United States
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2
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Tang Z, Shi L, Dai N, Zhang F, Wang X, Wang S, Sun Y, Zhang H, Li S, Wang J, Gao X, Hou Z, Xie J, Yang Z, Yan YM. Interfacial Push-Pull Dynamics Enable Rapid H ad Desorption for Enhanced Formate Electrooxidation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35074-35083. [PMID: 38919051 DOI: 10.1021/acsami.4c05794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
The electrocatalytic conversion of formate in alkaline solutions is of paramount significance in the realm of fuel cell applications. Nonetheless, the adsorptive affinity of adsorbed hydrogen (Had) on the catalyst surface has traditionally impeded the catalytic efficiency of formate in such alkaline environments. To circumvent this challenge, our approach introduces an interfacial push-pull effect on the catalyst surface. This mechanism involves two primary actions: First, the anchoring of palladium (Pd) nanoparticles on a phosphorus-doped TiO2 substrate (Pd/TiO2-P) promotes the formation of electron-rich Pd with a downshifted d band center, thereby "pushing" the desorption of Had from the Pd active sites. Second, the TiO2-P support diminishes the energy barrier for Had transfer from the Pd sites to the support itself, "pulling" Had to effectively relocate from the Pd active sites to the support. The resultant Pd/TiO2-P catalyst showcases a remarkable mass activity of 4.38 A mgPd-1 and outperforms the Pd/TiO2 catalyst (2.39 A mgPd-1) by a factor of 1.83. This advancement not only surmounts a critical barrier in catalysis but also delineates a scalable pathway to bolster the efficacy of Pd-based catalysts in alkaline media.
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Affiliation(s)
- Zheng Tang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Lanlan Shi
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Ningning Dai
- Dongying Industrial Product Inspection & Metrology Veriffcation Center, Dongying 257000, People's Republic of China
| | - Feike Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xiaoxuan Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Shiyu Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yanfei Sun
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Huiying Zhang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Shuyuan Li
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jinrui Wang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xueying Gao
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Zishan Hou
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jiangzhou Xie
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Zhiyu Yang
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Yi-Ming Yan
- State Key Laboratory of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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Li X, Zhao X, Zhang L, Mathur A, Xu Y, Fang Z, Gu L, Liu Y, Liu Y. Redox-tunable isoindigos for electrochemically mediated carbon capture. Nat Commun 2024; 15:1175. [PMID: 38331931 PMCID: PMC10853560 DOI: 10.1038/s41467-024-45410-z] [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: 04/26/2023] [Accepted: 01/23/2024] [Indexed: 02/10/2024] Open
Abstract
Efficient CO2 separation technologies are essential for mitigating climate change. Compared to traditional thermochemical methods, electrochemically mediated carbon capture using redox-tunable sorbents emerges as a promising alternative due to its versatility and energy efficiency. However, the undesirable linear free-energy relationship between redox potential and CO2 binding affinity in existing chemistry makes it fundamentally challenging to optimise key sorbent properties independently via chemical modifications. Here, we demonstrate a design paradigm for electrochemically mediated carbon capture sorbents, which breaks the undesirable scaling relationship by leveraging intramolecular hydrogen bonding in isoindigo derivatives. The redox potentials of isoindigos can be anodically shifted by >350 mV to impart sorbents with high oxygen stability without compromising CO2 binding, culminating in a system with minimised parasitic reactions. With the synthetic space presented, our effort provides a generalisable strategy to finetune interactions between redox-active organic molecules and CO2, addressing a longstanding challenge in developing effective carbon capture methods driven by non-conventional stimuli.
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Affiliation(s)
- Xing Li
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Xunhua Zhao
- Department of Mechanical Engineering & Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
- Macao Institute of Materials Science and Engineering (MIMSE), Faculty of Innovation Engineering, Macau University of Science and Technology, Taipa, Macau, 999078, China
| | - Lingyu Zhang
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Anmol Mathur
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yu Xu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Zhiwei Fang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Luo Gu
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Yuanyue Liu
- Department of Mechanical Engineering & Texas Materials Institute, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Yayuan Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, 21218, USA.
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Wan M, Yang Z, Morgan H, Shi J, Shi F, Liu M, Wong HW, Gu Z, Che F. Enhanced CO 2 Reactive Capture and Conversion Using Aminothiolate Ligand-Metal Interface. J Am Chem Soc 2023; 145:26038-26051. [PMID: 37973169 DOI: 10.1021/jacs.3c06888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Metallic catalyst modification by organic ligands is an emerging catalyst design in enhancing the activity and selectivity of electrocatalytic carbon dioxide (CO2) reactive capture and reduction to value-added fuels. However, a lack of fundamental science on how these ligand-metal interfaces interact with CO2 and key intermediates under working conditions has resulted in a trial-and-error approach for experimental designs. With the aid of density functional theory calculations, we provided a comprehensive mechanism study of CO2 reduction to multicarbon products over aminothiolate-coated copper (Cu) catalysts. Our results indicate that the CO2 reduction performance was closely related to the alkyl chain length, ligand coverage, ligand configuration, and Cu facet. The aminothiolate ligand-Cu interface significantly promoted initial CO2 activation and lowered the activation barrier of carbon-carbon coupling through the organic (nitrogen (N)) and inorganic (Cu) interfacial active sites. Experimentally, the selectivity and partial current density of the multicarbon products over aminothiolate-coated Cu increased by 1.5-fold and 2-fold, respectively, as compared to the pristine Cu at -1.16 VRHE, consistent with our theoretical findings. This work highlights the promising strategy of designing the ligand-metal interface for CO2 reactive capture and conversion to multicarbon products.
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Affiliation(s)
- Mingyu Wan
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Zhengyang Yang
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Heba Morgan
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Jinquan Shi
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06520, United States
| | - Fan Shi
- National Energy Technology Laboratory, P.O. Box 10940, 626 Cochrans Mill Road, Pittsburgh, Pennsylvania 15236, United States
| | - Mengxia Liu
- Department of Electrical Engineering, Yale University, New Haven, Connecticut 06511, United States
- Energy Sciences Institute, Yale University, West Haven, Connecticut 06520, United States
| | - Hsi-Wu Wong
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Zhiyong Gu
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
| | - Fanglin Che
- Department of Chemical Engineering, University of Massachusetts Lowell, Lowell, Massachusetts 01854, United States
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5
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Li X, Mathur A, Liu A, Liu Y. Electrifying Carbon Capture by Developing Nanomaterials at the Interface of Molecular and Process Engineering. Acc Chem Res 2023; 56:2763-2775. [PMID: 37751238 DOI: 10.1021/acs.accounts.3c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
ConspectusCarbon capture is an indispensable step toward closing the anthropogenic carbon cycle. However, the large-scale implementation of conventional thermochemical carbon capture technologies is hindered by their low energy efficiency, limited sorbent stability, and complexity in infrastructure integration. A mechanistically different alternative, commonly known as electrochemically mediated carbon capture (EMCC), has garnered increasing research traction over the past few years and relies on electrochemical stimuli instead of thermal or pressure swings for the capture and release of carbon dioxide (CO2). Compared to conventional methods, EMCC can be operated under mild conditions driven by intermittent renewable energy sources and has a flexible design to meet the multiscale demands of carbon capture, offering a potentially sustainable, energy-efficient, and cost-effective solution to CO2 concentration from dilute mixtures or the ambient environment.Nanomaterials have played a crucial role in carbon capture research. For instance, nanoporous materials can provide increased free volumes, surface areas, and active sites for carbon capture through physical or chemical adsorption from the gaseous phase. In contrast, EMCC relies on chemical absorption via acid-base interactions using solubilized CO2 in electrolytes. Therefore, most EMCC sorbents and mediators explored so far have been developed as molecules rather than nanomaterials. In recent years, our team has been focusing on electrifying the carbon capture processes at the molecular, materials, and process levels. We seek to address the most pressing issues associated with EMCC, either in fixed-bed or flow systems, that prevent their practical use. These issues include parasitic reactions with molecular oxygen, insufficient electrode capacity utilization, sorbent crossover, etc. To address these problems, there is an urgent need to develop rationally designed nanomaterials at the interface of molecular electrochemistry and device engineering. This Account provides an overview of recent progress on developing new chemistries and engineering batch/continuous processes for EMCC. We discuss the limitations of current EMCC technology and emphasize why nanomaterials are critical for electrifying carbon capture. First, we introduce the design principles for EMCC sorbents based on redox-active organic CO2 carriers and discuss metrics for their performance evaluation. Second, we showcase how molecular design can tackle problems of sorbent solubility, oxygen stability, and electrolyte compatibility in EMCC. Third, we discuss the early results of nanomaterials as solid sorbents in fixed-bed systems, nonswelling membranes for flow systems, and high-surface-area gas-liquid contactors. Finally, building on the foundation we established through our prior work, we offer perspectives on future directions for nanomaterials to help address the challenges in EMCC.
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Affiliation(s)
- Xing Li
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Anmol Mathur
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Andong Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Yayuan Liu
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
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Ayyar ASR, Aregawi DT, Petersen AR, Pedersen JMI, Kragh RR, Desoky MMH, Sundberg J, Vinum L, Lee JW. Carbon Dioxide-Mediated Desalination. J Am Chem Soc 2023; 145:3499-3506. [PMID: 36731027 DOI: 10.1021/jacs.2c11880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Conventional desalination membrane technologies, although offer portable drinking water, are still energy-intensive processes. This paper proposes a potentially new approach for performing water desalination and purification by utilizing the reversible interaction of carbon dioxide (CO2) with nucleophilic amines─reminiscent of the Solvay process. Based on our model studies with small molecules, CO2-responsive amphiphilic insoluble diamines were prepared, characterized, and applied in the formation of soda and ammonium chloride upon exposure to ambient CO2 (1 atm), thus removing chloride ions from model and real seawater. This ion-exchange process and separation of chloride from the aqueous phase are spontaneous in the presence of CO2 without the need for external energy sources. We demonstrate a flow system to envisage energy-efficient CO2-mediated desalination and simultaneous carbon capture and sequestration.
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Affiliation(s)
- Anand Sharadha-Ravi Ayyar
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Desta Tesfay Aregawi
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Allan R Petersen
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Jonas Merlin Ibsgaard Pedersen
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Rasmus Refsgaard Kragh
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Mohamed M H Desoky
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Jonas Sundberg
- Danish Hydrocarbon Research and Technology Centre, Technical University of Denmark, Elektrovej 375, Kgs. Lyngby 2800, Denmark
| | - Lars Vinum
- CowaTech ApS, Universitetsparken 5, Copenhagen Ø 2100, Denmark
| | - Ji-Woong Lee
- Department of Chemistry, Nano-Science Centre, University of Copenhagen, Universitetsparken 5, Copenhagen Ø 2100, Denmark.,Novo Nordisk Foundation CO2 Research Center, Gustav Wieds Vej 10, Aarhus 8000, Denmark
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