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Hussain I, Alasiri H, Ullah Khan W, Alhooshani K. Advanced electrocatalytic technologies for conversion of carbon dioxide into methanol by electrochemical reduction: Recent progress and future perspectives. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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2
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Wu F, Jiang F, Yang J, Dai W, Lan D, Shen J, Fang Z. Investigation of Molecular Mechanism of Cobalt Porphyrin Catalyzed CO 2 Electrochemical Reduction in Ionic Liquid by In-Situ SERS. Molecules 2023; 28:molecules28062747. [PMID: 36985719 PMCID: PMC10059646 DOI: 10.3390/molecules28062747] [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: 02/17/2023] [Revised: 03/12/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
This study explores the electrochemical reduction in CO2 using room temperature ionic liquids as solvents or electrolytes, which can minimize the environmental impact of CO2 emissions. To design effective CO2 electrochemical systems, it is crucial to identify intermediate surface species and reaction products in situ. The study investigates the electrochemical reduction in CO2 using a cobalt porphyrin molecular immobilized electrode in 1-n-butyl-3-methyl imidazolium tetrafluoroborate (BMI.BF4) room temperature ionic liquids, through in-situ surface-enhanced Raman spectroscopy (SERS) and electrochemical technique. The results show that the highest faradaic efficiency of CO produced from the electrochemical reduction in CO2 can reach 98%. With the potential getting more negative, the faradaic efficiency of CO decreases while H2 is produced as a competitive product. Besides, water protonates porphyrin macrocycle, producing pholorin as the key intermediate for the hydrogen evolution reaction, leading to the out-of-plane mode of the porphyrin molecule. Absorption of CO2 by the ionic liquids leads to the formation of BMI·CO2 adduct in BMI·BF4 solution, causing vibration modes at 1100, 1457, and 1509 cm-1. However, the key intermediate of CO2-· radical is not observed. The υ(CO) stretching mode of absorbed CO is affected by the electrochemical Stark effect, typical of CO chemisorbed on a top site.
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Affiliation(s)
- Feng Wu
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Fengshuo Jiang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Jiahao Yang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Weiyan Dai
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Donghui Lan
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Jing Shen
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Zhengjun Fang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, School of Material and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
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3
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Recent updates on applications of ionic liquids (ILs) for biomedical sciences. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [DOI: 10.1007/s13738-022-02544-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Hamilton ST, Feric TG, Gładysiak A, Cantillo NM, Zawodzinski TA, Park AHA. Mechanistic Study of Controlled Zinc Electrodeposition Behaviors Facilitated by Nanoscale Electrolyte Additives at the Electrode Interface. ACS APPLIED MATERIALS & INTERFACES 2022; 14:22016-22029. [PMID: 35522595 DOI: 10.1021/acsami.1c23781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Nanoparticle organic hybrid materials (NOHMs) are liquid-like materials composed of an inorganic core to which a polymeric canopy is ionically tethered. NOHMs have unique properties including negligible vapor pressure, high oxidative thermal stability, and the ability to bind to reactive species of interest due to the tunability of their polymeric canopy. This makes them promising multifunctional materials for a wide range of energy and environmental technologies, including electrolyte additives for electrochemical energy storage (e.g., flow batteries) and the electrochemical conversion of CO2 to chemicals and fuels. Due to their unique transport behaviors in fluid systems, an understanding of the near-electrode surface behavior of NOHMs in electrolyte solutions and their effect on electrochemical reactions is still lacking. In this work, the complexation of zinc (Zn) by NOHMs with an ionically tethered polyetheramine canopy (HPE) (NOHM-I-HPE) was studied using attenuated total reflectance Fourier transform infrared and Carbon-13 nuclear magnetic resonance spectroscopy. Additionally, various electrochemical techniques were employed to discern the role of NOHM-I-HPE during zinc electrodeposition, and the results were compared to those of the electrochemical system containing untethered HPE polymers. Our findings confirmed that NOHM-I-HPE and HPE reversibly complex zinc in the aqueous electrolyte. NOHM-I-HPE and HPE were found to block some of the electrode active sites, reducing the overall current density during electrodeposition, while facilitating the formation of smooth zinc deposits, as revealed by surface imaging and diffraction techniques. Observed variations in the current density responses and the degree of passivation created by the NOHM-I-HPE and HPE adsorbed on the electrode surface revealed that their different packing behaviors at the electrode-electrolyte interface influence the zinc deposition mechanism. The presence of the nanoparticle and ordering offered by the NOHMs as well as the structured conformation of the polymeric canopy allowed the formation of void spaces and free volumes for enhanced transport behaviors. These findings provided insights into how structured electrolyte additives such as NOHMs can allow for advancements in electrolyte design for controlled deposition of metal species from energy-dense electrolytes or for other electrochemical reactions.
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Affiliation(s)
- Sara T Hamilton
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
| | - Tony G Feric
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
- Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
| | - Andrzej Gładysiak
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
| | - Nelly M Cantillo
- Department of Chemical & Biomolecular Engineering, The University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
| | - Thomas A Zawodzinski
- Department of Chemical & Biomolecular Engineering, The University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Ah-Hyung Alissa Park
- Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
- Lenfest Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
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5
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Dawass N, Langeveld J, Ramdin M, Pérez-Gallent E, Villanueva AA, Giling EJM, Langerak J, van den Broeke LJP, Vlugt TJH, Moultos OA. Solubilities and Transport Properties of CO 2, Oxalic Acid, and Formic Acid in Mixed Solvents Composed of Deep Eutectic Solvents, Methanol, and Propylene Carbonate. J Phys Chem B 2022; 126:3572-3584. [PMID: 35507866 PMCID: PMC9125562 DOI: 10.1021/acs.jpcb.2c01425] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
![]()
Recently, deep eutectic
solvents (DES) have been considered as
possible electrolytes for the electrochemical reduction of CO2 to value-added products such as formic and oxalic acids.
The applicability of pure DES as electrolytes is hindered by high
viscosities. Mixtures of DES with organic solvents can be a promising
way of designing superior electrolytes by exploiting the advantages
of each solvent type. In this study, densities, viscosities, diffusivities,
and ionic conductivities of mixed solvents comprising DES (i.e., reline
and ethaline), methanol, and propylene carbonate were computed using
molecular simulations. To provide a quantitative assessment of the
affinity and mass transport of CO2 and oxalic and formic
acids in the mixed solvents, the solubilities and self-diffusivities
of these solutes were also computed. Our results show that the addition
of DES to the organic solvents enhances the solubilities of oxalic
and formic acids, while the solubility of CO2 in the ethaline-containing
mixtures are in the same order of magnitude with the respective pure
organic components. A monotonic increase in the densities and viscosities
of the mixed solvents is observed as the mole fraction of DES in the
mixture increases, with the exception of the density of ethaline-propylene
carbonate which shows the opposite behavior due to the high viscosity
of the pure organic component. The self-diffusivities of all species
in the mixtures significantly decrease as the mole fraction of DES
approaches unity. Similarly, the self-diffusivities of the dissolved
CO2 and the oxalic and formic acids also decrease by at
least 1 order of magnitude as the composition of the mixture shifts
from the pure organic component to pure DES. The computed ionic conductivities
of all mixed solvents show a maximum value for mole fractions of DES
in the range from 0.2 to 0.6 and decrease as more DES is added to
the mixtures. Since for most mixtures studied here no prior experimental
measurements exist, our findings can serve as a first data set based
on which further investigation of DES-containing electrolyte solutions
can be performed for the electrochemical reduction of CO2 to useful chemicals.
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Affiliation(s)
- Noura Dawass
- Chemical Engineering Program, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar
| | - Jilles Langeveld
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Mahinder Ramdin
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Elena Pérez-Gallent
- Department of Sustainable Process and Energy Systems, TNO, Delft, Zuid-Holland 2628CA, The Netherlands
| | - Angel A Villanueva
- Department of Sustainable Process and Energy Systems, TNO, Delft, Zuid-Holland 2628CA, The Netherlands
| | - Erwin J M Giling
- Department of Sustainable Process and Energy Systems, TNO, Delft, Zuid-Holland 2628CA, The Netherlands
| | - Jort Langerak
- Research and Development Department, DMT Environmental Technology, Yndustrywei 3, 8501SN Joure, The Netherlands
| | - Leo J P van den Broeke
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Thijs J H Vlugt
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Othonas A Moultos
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
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Tan X, Sun X, Han B. Ionic liquid-based electrolytes for CO 2 electroreduction and CO 2 electroorganic transformation. Natl Sci Rev 2022; 9:nwab022. [PMID: 35530435 PMCID: PMC9071064 DOI: 10.1093/nsr/nwab022] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/19/2021] [Accepted: 01/19/2021] [Indexed: 01/24/2023] Open
Abstract
CO2 is an abundant and renewable C1 feedstock. Electrochemical transformation of CO2 can integrate CO2 fixation with renewable electricity storage, providing an avenue to close the anthropogenic carbon cycle. As a new type of green and chemically tailorable solvent, ionic liquids (ILs) have been proposed as highly promising alternatives for conventional electrolytes in electrochemical CO2 conversion. This review summarizes major advances in the electrochemical transformation of CO2 into value-added carbonic fuels and chemicals in IL-based media in the past several years. Both the direct CO2 electroreduction (CO2ER) and CO2-involved electroorganic transformation (CO2EOT) are discussed, focusing on the effect of electrocatalysts, IL components, reactor configurations and operating conditions on catalytic activity, selectivity and reusability. The reasons for the enhanced CO2 conversion performance by ILs are also discussed, providing guidance for the rational design of novel IL-based electrochemical processes for CO2 conversion. Finally, the critical challenges remaining in this research area and promising directions for future research are proposed.
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Affiliation(s)
- Xingxing Tan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaofu Sun
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloid and Interface and Thermodynamics, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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7
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Hamilton ST, Feric TG, Bhattacharyya S, Cantillo NM, Greenbaum SG, Zawodzinski TA, Park AHA. Nanoscale Hybrid Electrolytes with Viscosity Controlled Using Ionic Stimulus for Electrochemical Energy Conversion and Storage. JACS AU 2022; 2:590-600. [PMID: 35373208 PMCID: PMC8970003 DOI: 10.1021/jacsau.1c00410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Indexed: 06/14/2023]
Abstract
As renewable energy is rapidly integrated into the grid, the challenge has become storing intermittent renewable electricity. Technologies including flow batteries and CO2 conversion to dense energy carriers are promising storage options for renewable electricity. To achieve this technological advancement, the development of next generation electrolyte materials that can increase the energy density of flow batteries and combine CO2 capture and conversion is desired. Liquid-like nanoparticle organic hybrid materials (NOHMs) composed of an inorganic core with a tethered polymeric canopy (e.g., polyetheramine (HPE)) have a capability to bind chemical species of interest including CO2 and redox-active species. In this study, the unique response of NOHM-I-HPE-based electrolytes to salt addition was investigated, including the effects on solution viscosity and structural configurations of the polymeric canopy, impacting transport behaviors. The addition of 0.1 M NaCl drastically lowered the viscosity of NOHM-based electrolytes by up to 90%, reduced the hydrodynamic diameter of NOHM-I-HPE, and increased its self-diffusion coefficient, while the ionic strength did not alter the behaviors of untethered HPE. This study is the first to fundamentally discern the changes in polymer configurations of NOHMs induced by salt addition and provides a comprehensive understanding of the effect of ionic stimulus on their bulk transport properties and local dynamics. These insights could be ultimately employed to tailor transport properties for a range of electrochemical applications.
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Affiliation(s)
- Sara T. Hamilton
- Department
of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Lenfest
Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
| | - Tony G. Feric
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
- Lenfest
Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
| | - Sahana Bhattacharyya
- Hunter
College Physics Department, City University
of New York, New York, New York 10065, United
States
| | - Nelly M. Cantillo
- Department
of Chemical & Biomolecular Engineering, The University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
| | - Steven G. Greenbaum
- Hunter
College Physics Department, City University
of New York, New York, New York 10065, United
States
| | - Thomas A. Zawodzinski
- Department
of Chemical & Biomolecular Engineering, The University of Tennessee Knoxville, Knoxville, Tennessee 37996, United States
- Oak Ridge
National Laboratory, Oak Ridge, Tennessee 37830, United States
| | - Ah-Hyung Alissa Park
- Department
of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
- Lenfest
Center for Sustainable Energy, The Earth Institute, Columbia University, New York, New York 10027, United States
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8
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Jang T, Paik D, Shin S, Kim H. Density functional theory in classical explicit solvents: Mean‐field
QM
/
MM
method for simulating solid–liquid interfaces. B KOREAN CHEM SOC 2022. [DOI: 10.1002/bkcs.12485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Taehwan Jang
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
| | - Dooam Paik
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
| | - Seung‐Jae Shin
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
| | - Hyungjun Kim
- Department of Chemistry Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
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9
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Cao L, Kim HW, Jeong YJ, Han SC, Park JK. Rapid Continuous-Flow Water-Free Synthesis of Ultrapure Ionic Liquids Assisted by Microwaves. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00412] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Cao
- Department of Chemistry and Institution for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Hong Won Kim
- Department of Chemistry and Institution for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Yu Jin Jeong
- Department of Chemistry and Institution for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Seung Chang Han
- Department of Chemistry and Institution for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Jin Kyoon Park
- Department of Chemistry and Institution for Functional Materials, Pusan National University, Busan 46241, Korea
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10
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The Electrochemical Behaviour of Quaternary Amine-Based Room-Temperature Ionic Liquid N4111(TFSI). Catalysts 2021. [DOI: 10.3390/catal11111315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, we used the in situ X-ray photoelectron spectroscopy (XPS), in situ mass spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy methods, for the first time, in a detailed exploration of the electrochemical behaviour of a quaternary amine cation-based room-temperature ionic liquid, butyl-trimethyl-ammonium bis(trifluoromethylsulfonyl)imide (N4111(TFSI)), at the negatively and positively polarised molybdenum carbide-derived micro-mesoporous carbon (mmp-C(Mo2C)) electrodes that can be used as high surface area supporting material for electrocatalysts. The shapes of the C 1s, N 1s, O 1s, F 1s and S 2p XPS spectra were stable for N4111(TFSI) within a very wide potential range. The XPS data indicated the non-specific adsorption character of the cations and anions in the potential range from −2.00 V to 0.00 V. Thus, this region can be used for the detailed analysis of catalytic reaction mechanisms. We observed strong adsorption from 0.00 V to 1.80 V, and at E > 1.80 V, very strong adsorption of the N4111(TFSI) at the mmp-C(Mo2C) took place. At more negative potentials than −2.00 V, the formation of a surface layer containing both N4111+ cations and TFSI− anions was established with the formation of various gaseous compounds. Collected data indicated the electrochemical instability of the N4111+ cation at E < −2.00 V.
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11
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Feric TG, Hamilton ST, Cantillo NM, Imel AE, Zawodzinski TA, Park AHA. Dynamic Mixing Behaviors of Ionically Tethered Polymer Canopy of Nanoscale Hybrid Materials in Fluids of Varying Physical and Chemical Properties. J Phys Chem B 2021; 125:9223-9234. [PMID: 34370476 DOI: 10.1021/acs.jpcb.1c00935] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An emerging area of sustainable energy and environmental research is focused on the development of novel electrolytes that can increase the solubility of target species and improve subsequent reaction performance. Electrolytes with chemical and structural tunability have allowed for significant advancements in flow batteries and CO2 conversion integrated with CO2 capture. Liquid-like nanoparticle organic hybrid materials (NOHMs) are nanoscale fluids that are composed of inorganic nanocores and an ionically tethered polymeric canopy. NOHMs have been shown to exhibit enhanced conductivity making them promising for electrolyte applications, though they are often challenged by high viscosity in the neat state. In this study, a series of binary mixtures of NOHM-I-HPE with five different secondary fluids, water, chloroform, toluene, acetonitrile, and ethyl acetate, were prepared to reduce the fluid viscosity and investigate the effects of secondary fluid properties (e.g., hydrogen bonding ability, polarity, and molar volume) on their transport behaviors, including viscosity and diffusivity. Our results revealed that the molecular ratio of secondary fluid to the ether groups of Jeffamine M2070 (λSF) was able to describe the effect that secondary fluid has on transport properties. Our findings also suggest that in solution, the Jeffamine M2070 molecules exist in different nanoscale environments, where some are more strongly associated with the nanoparticle surface than others, and the conformation of the polymer canopy was dependent on the secondary fluid. This understanding of the polymer conformation in NOHMs can allow for the better design of an electrolyte capable of capturing and releasing small gaseous or ionic species.
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Affiliation(s)
| | | | - Nelly M Cantillo
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Adam E Imel
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States
| | - Thomas A Zawodzinski
- Department of Chemical and Biomolecular Engineering, The University of Tennessee, Knoxville, Tennessee 37996, United States.,Energy Storage and Membrane Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States
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12
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König M, Lin SH, Vaes J, Pant D, Klemm E. Integration of aprotic CO 2 reduction to oxalate at a Pb catalyst into a GDE flow cell configuration. Faraday Discuss 2021; 230:360-374. [PMID: 34259691 DOI: 10.1039/d0fd00141d] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Electrochemical CO2 reduction to oxalic acid in aprotic solvents could be a potential pathway to produce carbon-neutral oxalic acid. One of the challenges in aprotic CO2 reduction are the limited achievable current densities under standard conditions, despite the increased CO2 solubility compared to aqueous applications. The application of aprotic solvents can reduce CO2 rather selectively to oxalate, and faradaic efficiencies (FEs) of up to 80% were achieved in this study with a Pb catalyst in acetonitrile, the FE being mainly dictated by the local CO2 concentration at the electrode. This process was integrated into a flow cell employing a two-layered carbon-free lead (Pb) gas diffusion electrode (GDE) and a sacrificial zinc (Zn) anode. With the application of this GDE the applicable current densities could be improved up to a current density of j = 80 mA cm-2 at a FE(oxalate) = 53%, which is within the range of the highest j reported in the literature. In addition, we provide an explanation for the deactivation mechanism of metal catalysts observed in the aprotic CO2 reduction literature. The deactivation is not related to a mass transport limitation but to cathodic corrosion observed at highly negative potential when employing quaternary ammonium supporting electrolyte cations, promoting catalyst leaching.
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Affiliation(s)
- Maximilian König
- Institute of Chemical Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany and Separation & Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium.
| | - Shih-Hsuan Lin
- Separation & Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium.
| | - Jan Vaes
- Separation & Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium. and Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), 9000 Ghent, Belgium
| | - Deepak Pant
- Separation & Conversion Technology, Flemish Institute for Technological Research (VITO), Boeretang 200, 2400 Mol, Belgium. and Centre for Advanced Process Technology for Urban Resource Recovery (CAPTURE), 9000 Ghent, Belgium
| | - Elias Klemm
- Institute of Chemical Technology, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
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13
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Mena S, Ribas E, Richart C, Gallardo I, Faraudo J, Shaw SK, Guirado G. Electrochemical tools to disclose the electrochemical reduction mechanism of CO2 in aprotic solvents and ionic liquids. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Kiani A, Nami Y, Hedayati S, Elieh Ali Komi D, Goudarzi F, Haghshenas B. Application of Tarkhineh Fermented Product to Produce Potato Chips With Strong Probiotic Properties, High Shelf-Life, and Desirable Sensory Characteristics. Front Microbiol 2021; 12:657579. [PMID: 34054754 PMCID: PMC8153181 DOI: 10.3389/fmicb.2021.657579] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/20/2021] [Indexed: 11/17/2022] Open
Abstract
The application of Tarkhineh texture to protect probiotics in potato chips has been investigated as the main goal in this paper. In this study, the probiotic assessments, morphological characteristics, sensory evaluation, and survival rates of the covered probiotic cells with Tarkhineh in potato chips during storage time were assessed. Based on results, T34 isolated from traditional Tarkhineh as a safe strain had a high tolerance to low pH and bile salt conditions, displayed acceptable anti-pathogenic activities, and also showed desirable antibiotic susceptibility. Two types of Tarkhineh formulations (plain Tarkhineh and turmeric Tarkhineh) were applied using a simple spraying method for covering T34 cells in potato chips. All formulations showed elliptical to spherical (480-770 μm) shape probiotic drops. Storage stability results revealed that T34 cells mixed with turmeric and plain Tarkhineh during 4 months of storage at 4°C displayed excellent protection abilities with about 3.70 and 2.85 log decreases in CFU/g respectively. Additionally, probiotic potato chips compared to non-probiotic and commercial potato chips, exhibited probiotic product criteria such as excellent quality and superior sensory properties during storage time. In conclusion, Tarkhineh showed high potential as a protective matrix for probiotic cells in potato chips.
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Affiliation(s)
- Amir Kiani
- Regenerative Medicine Research Center (RMRC), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Yousef Nami
- Department of Food Biotechnology, Branch for Northwest & West Region, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
| | - Shahab Hedayati
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Daniel Elieh Ali Komi
- Cellular and Molecular Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Farjam Goudarzi
- Regenerative Medicine Research Center (RMRC), Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Babak Haghshenas
- Regenerative Medicine Research Center (RMRC), Kermanshah University of Medical Sciences, Kermanshah, Iran
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15
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Li F, Mocci F, Zhang X, Ji X, Laaksonen A. Ionic liquids for CO2 electrochemical reduction. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.10.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Wang G, Chen J, Ding Y, Cai P, Yi L, Li Y, Tu C, Hou Y, Wen Z, Dai L. Electrocatalysis for CO2 conversion: from fundamentals to value-added products. Chem Soc Rev 2021; 50:4993-5061. [DOI: 10.1039/d0cs00071j] [Citation(s) in RCA: 205] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This timely and comprehensive review mainly summarizes advances in heterogeneous electroreduction of CO2: from fundamentals to value-added products.
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17
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Sharifi Golru S, Biddinger EJ. Effect of anion in diluted imidazolium-based ionic liquid/buffer electrolytes for CO2 electroreduction on copper. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136787] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Oh S, Morales-Collazo O, Keller AN, Brennecke JF. Cation-Anion and Anion-CO 2 Interactions in Triethyl(octyl)phosphonium Ionic Liquids with Aprotic Heterocyclic Anions (AHAs). J Phys Chem B 2020; 124:8877-8887. [PMID: 32914976 DOI: 10.1021/acs.jpcb.0c06374] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Ionic liquids with aprotic heterocyclic anions (AHAs) have been developed for postcombustion CO2 capture applications. The anions of AHA ILs play a significant role in tuning anion-CO2 complexation. In addition, AHAs are able to trigger the abstraction of acidic protons located at the α position of phosphonium cations by forming hydrogen bonds between cations and anions, eventually leading to cation-driven CO2 complexation. Here we investigate the role of the anion in cation-anion hydrogen bonding and ylide formation. Using CO2 uptake measurements, 31P nuclear magnetic resonance (NMR), attenuated total reflection-Fourier transform infrared (ATR-FTIR) deuterium exchange equilibrium and rates, two-dimensional nuclear Overhauser effect spectroscopy (2D NOESY), and density functional theory calculations, we show that the key is the proximity of the negatively charged nitrogen atoms on the anion to the α protons, which is governed not just by anion basicity but by sterics. Thus, we show that triethyl(octyl)phosphonium 3-methyl-5-trifluoromethylpyrazolide is much more effective in hydrogen-bonding with and deprotonating the cation than the equivalent [P2228] ILs with more basic 2-cyanopyrrolide and 3-trifluoromethylpyrazolide anions.
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Affiliation(s)
- Seungmin Oh
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Oscar Morales-Collazo
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Austin N Keller
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Joan F Brennecke
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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19
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Efficient Electrochemical Reduction of CO2 to CO in Ionic Liquid/Propylene Carbonate Electrolyte on Ag Electrode. Catalysts 2020. [DOI: 10.3390/catal10101102] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The electrochemical reduction of CO2 is a promising way to recycle it to produce value-added chemicals and fuels. However, the requirement of high overpotential and the low solubility of CO2 in water severely limit their efficient conversion. To overcome these problems, in this work, a new type of electrolyte solution constituted by ionic liquids and propylene carbonate was used as the cathodic solution, to study the conversion of CO2 on an Ag electrode. The linear sweep voltammetry (LSV), Tafel characterization and electrochemical impedance spectroscopy (EIS) were used to study the catalytic effect and the mechanism of ionic liquids in electrochemical reduction of CO2. The LSV and Tafel characterization indicated that the chain length of 1-alkyl-3-methyl imidazolium cation had strong influences on the catalytic performance for CO2 conversion. The EIS analysis showed that the imidazolium cation that absorbed on the Ag electrode surface could stabilize the anion radical (CO2•−), leading to the enhanced efficiency of CO2 conversion. At last, the catalytic performance was also evaluated, and the results showed that Faradaic efficiency for CO as high as 98.5% and current density of 8.2 mA/cm2 could be achieved at −1.9 V (vs. Fc/Fc+).
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20
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Abstract
Electroreduction of carbon dioxide (CO2) to value-added chemicals and fuels is a promising approach for sustainable energy conversion and storage. Many electrocatalysts have been designed for this purpose and studied extensively. The role of the electrolyte is particularly interesting and is pivotal for designing electrochemical devices by taking advantage of the synergy between electrolyte and catalyst. Recently, ionic liquids as electrolytes have received much attention due to their high CO2 adsorption capacity, high selectivity, and low energy consumption. In this review, we present a comprehensive overview of the recent progress in CO2 electroreduction in ionic liquid-based electrolytes, especially in the performance of different catalysts, the electrolyte effect, as well as mechanism studies to understand the reaction pathway. Perspectives on this interesting area are also discussed for the construction of novel electrochemical systems.
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Affiliation(s)
- Dexin Yang
- College of Chemistry, Zhengzhou University, Zhengzhou 450001, 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
| | - Qinggong Zhu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Buxing Han
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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21
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Hubbard CD, Chatterjee D, Oszajca M, Polaczek J, Impert O, Chrzanowska M, Katafias A, Puchta R, van Eldik R. Inorganic reaction mechanisms. A personal journey. Dalton Trans 2020; 49:4599-4659. [PMID: 32162632 DOI: 10.1039/c9dt04620h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This review covers highlights of the work performed in the van Eldik group on inorganic reaction mechanisms over the past two decades in the form of a personal journey. Topics that are covered include, from NO to HNO chemistry, peroxide activation in model porphyrin and enzymatic systems, the wonder-world of RuIII(edta) chemistry, redox chemistry of Ru(iii) complexes, Ru(ii) polypyridyl complexes and their application, relevant physicochemical properties and reaction mechanisms in ionic liquids, and mechanistic insight from computational chemistry. In each of these sections, typical examples of mechanistic studies are presented in reference to related work reported in the literature.
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Affiliation(s)
- Colin D Hubbard
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany.
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22
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Mena S, Santiago S, Gallardo I, Guirado G. Sustainable and efficient electrosynthesis of naproxen using carbon dioxide and ionic liquids. CHEMOSPHERE 2020; 245:125557. [PMID: 31862555 DOI: 10.1016/j.chemosphere.2019.125557] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 11/28/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
The use of CO2 as a C1 carbon source for synthesis is raising increasing attention both as a strategy to bring value to carbon dioxide capture technologies and a sustainable approach towards chemicals and energy. The presented results focus on the application of electrochemical methods to incorporate CO2 into organic compounds using ionic liquids as electrolytes, which provides a green alternative to the formation of C-C bonds. In this sense, the current manuscript shows that Naproxen (6-Methoxy-α-methyl-2-naphthaleneacetic acid) can be synthetizing in high yield (89%) and conversion rates (90%) through an electrocarboxylation process using CO2 and ionic liquids. The role of the cathode and solvent, which can potentially enhance the synthesis, is also discussed. The "green" route described in the current work would open a new sustainable strategy for the electrochemical production of pharmaceutical compounds.
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Affiliation(s)
- Silvia Mena
- Departament de Química, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Spain
| | - Sara Santiago
- Departament de Química, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Spain
| | - Iluminada Gallardo
- Departament de Química, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Spain
| | - Gonzalo Guirado
- Departament de Química, Universitat Autònoma de Barcelona, 08193-Bellaterra, Barcelona, Spain.
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23
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Solvents and Supporting Electrolytes in the Electrocatalytic Reduction of CO 2. iScience 2019; 19:135-160. [PMID: 31369986 PMCID: PMC6669325 DOI: 10.1016/j.isci.2019.07.014] [Citation(s) in RCA: 114] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 06/20/2019] [Accepted: 07/10/2019] [Indexed: 11/23/2022] Open
Abstract
Different electrolytes applied in the aqueous electrocatalytic CO2 reduction reaction (CO2RR) considerably influence the catalyst performance. Their concentration, species, buffer capacity, and pH value influence the local reaction conditions and impact the product distribution of the electrocatalyst. Relevant properties of prospective solvents include their basicity, CO2 solubility, conductivity, and toxicity, which affect the CO2RR and the applicability of the solvents. The complexity of an electrochemical system impedes the direct correlation between a single parameter and cell performance indicators such as the Faradaic efficiency; thus the effects of different electrolytes are often not fully comprehended. For an industrial application, a deeper understanding of the effects described in this review can help with the prediction of performance, as well as the development of scalable electrolyzers. In this review, the application of supporting electrolytes and different solvents in the CO2RR reported in the literature are summarized and discussed.
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24
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Mena S, Sanchez J, Guirado G. Electrocarboxylation of 1-chloro-(4-isobutylphenyl)ethane with a silver cathode in ionic liquids: an environmentally benign and efficient way to synthesize Ibuprofen. RSC Adv 2019; 9:15115-15123. [PMID: 35516352 PMCID: PMC9064219 DOI: 10.1039/c9ra01781j] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/09/2019] [Indexed: 12/02/2022] Open
Abstract
Electrocarboxylation of organic halides is one of the most widely used approaches for valorising CO2. In this manuscript, we report a new greener synthetic route for synthesising 2-(4-isobutylphenyl)propanoic acid, Ibuprofen, one of the most popular non-steroidal anti-inflammatory drugs (NSAIDs). The joint use of electrochemical techniques and ionic liquids (ILs) allows CO2 to be used as a C1-organic building block for synthesising Ibuprofen in high yields, with conversion ratios close to 100%, and under mild conditions. Furthermore, the determination of the reduction peak potential values of 1-chloro-(4-isobutylphenyl)ethane in several electrolytes (DMF, and ionic liquids) and with different cathodes (carbon and silver) makes it possible to evaluate the most "energetically" favourable conditions for performing the electrocarboxylation reaction. Hence, the use of ILs not only makes the electrolytic media greener, but they also act as catalysts enabling the electrochemical reduction of 1-chloro-(4-isobutylphenyl)ethane to be decreased by up to 1.0 V.
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Affiliation(s)
- Silvia Mena
- Departament de Química, Universitat Autònoma de Barcelona 08193-Bellaterra Barcelona Spain
| | - Jessica Sanchez
- Departament de Química, Universitat Autònoma de Barcelona 08193-Bellaterra Barcelona Spain
| | - Gonzalo Guirado
- Departament de Química, Universitat Autònoma de Barcelona 08193-Bellaterra Barcelona Spain
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25
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Rudnev AV, Kiran K, Cedeño López A, Dutta A, Gjuroski I, Furrer J, Broekmann P. Enhanced electrocatalytic CO formation from CO2 on nanostructured silver foam electrodes in ionic liquid/water mixtures. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.03.102] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Sacco A. Electrochemical impedance spectroscopy as a tool to investigate the electroreduction of carbon dioxide: A short review. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.06.020] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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27
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Effect of Ionic Liquids on the Physical Properties of the Newly Synthesized Conducting Polymer. INT J POLYM SCI 2018. [DOI: 10.1155/2018/8275985] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Conducting polymer has many applications in electronics, optical devices, sensors, and so on; however, there is still a massive scope of improvement in this area. Therefore, towards this aim, in this study, we synthesized a new thiophene-based conducting polymer, 2-heptadecyl-5-hexyl-6-(5-methylthiophen-2-yl)-4-(5-((E)-prop-1-enyl)thiophen-2-yl)-5H-pyrrolo[3,4-d]thiazole (HHMPT). Further, to increase its application, the interactions between the conducting polymer (HHMPT) and ionic liquids (ILs) were investigated by UV-Vis spectroscopy, FTIR spectroscopy, and confocal Raman spectroscopy techniques. Moreover, film roughness and conductivity of the polymer film with or without ILs were also studied. The imidazolium- and ammonium family ILs with the potential to interact with the newly synthesized conducting polymer were used. The results of the interaction studies revealed that the imidazolium family IL-polymer mixtures and ammonium family IL-polymer mixtures have almost similar conductivity at low concentration of ILs. This study provides an insight into the combined effect of a polymer and ILs and may generate many theoretical and experimental opportunities.
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28
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Lim HK, Kwon Y, Kim HS, Jeon J, Kim YH, Lim JA, Kim BS, Choi J, Kim H. Insight into the Microenvironments of the Metal–Ionic Liquid Interface during Electrochemical CO2 Reduction. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03777] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hyung-Kyu Lim
- Department
of Chemical Engineering, Kangwon National University, Chuncheon, Gangwon-do 24341, Republic of Korea
| | - Youngkook Kwon
- Carbon
Resource Institute, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, University of Science & Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Han Seul Kim
- Graduate
School of EEWS, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jiwon Jeon
- Graduate
School of EEWS, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Yong-Hoon Kim
- Graduate
School of EEWS, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Jung-Ae Lim
- Carbon
Resource Institute, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Beom-Sik Kim
- Carbon
Resource Institute, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, University of Science & Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Jina Choi
- Carbon
Resource Institute, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Hyungjun Kim
- Graduate
School of EEWS, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Department
of Chemistry, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
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29
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Rudnev AV, Fu YC, Gjuroski I, Stricker F, Furrer J, Kovács N, Vesztergom S, Broekmann P. Transport Matters: Boosting CO 2 Electroreduction in Mixtures of [BMIm][BF 4 ]/Water by Enhanced Diffusion. Chemphyschem 2017; 18:3153-3162. [PMID: 28872751 DOI: 10.1002/cphc.201700737] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Revised: 08/02/2017] [Indexed: 12/21/2022]
Abstract
Room-temperature ionic liquids (RTILs) are promising new electrolytes for efficient carbon dioxide reduction. However, due to their high viscosity, the mass transport of CO2 in RTILs is typically slow, at least one order of magnitude slower than in aqueous systems. One possibility to improve mass transport in RTILs is to decrease their viscosity through dilution with water. Herein, defined amounts of water are added to 1-butyl-3methylimidazolium tetrafluoroborate ([BMIm][BF4 ]), which is a hydrophilic RTIL. Electrochemical measurements on quiescent and hydrodynamic systems both indicate enhanced CO2 electroreduction. This enhancement has its origin in thermodynamic/kinetic effects (the addition of water increases the availability of H+ , which is a reaction partner of CO2 electroreduction) and in an increased rate of transport due to lower viscosity. Electrochemically determined diffusion coefficients for CO2 in [BMIm][BF4 ]/water systems agree well with values determined by NMR spectroscopy.
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Affiliation(s)
- Alexander V Rudnev
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland.,A. N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii prospekt 31, 119991, Moscow, Russia
| | - Yong-Chun Fu
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Ilche Gjuroski
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Florian Stricker
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Julien Furrer
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - Noémi Kovács
- Department of Physical Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117, Budapest, Hungary
| | - Soma Vesztergom
- Department of Physical Chemistry, Eötvös Loránd University, Pázmány Péter sétány 1/A, 1117, Budapest, Hungary
| | - Peter Broekmann
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
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30
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Electroreduction and solubility of CO2 in methoxy- and nitrile-functionalized imidazolium (FAP) ionic liquids. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1117-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Larrazábal GO, Martín AJ, Pérez-Ramírez J. Building Blocks for High Performance in Electrocatalytic CO 2 Reduction: Materials, Optimization Strategies, and Device Engineering. J Phys Chem Lett 2017; 8:3933-3944. [PMID: 28763228 DOI: 10.1021/acs.jpclett.7b01380] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In recent years, screening of materials has yielded large gains in catalytic performance for the electroreduction of CO2. However, the diversity of approaches and a still immature mechanistic understanding make it challenging to assess the real potential of each concept. In addition, achieving high performance in CO2 (photo)electrolyzers requires not only favorable electrokinetics but also precise device engineering. In this Perspective, we analyze a broad set of literature reports to construct a set of design-performance maps that suggest patterns between performance figures and different classes of materials and optimization strategies. These maps facilitate the screening of different approaches to electrocatalyst design and the identification of promising avenues for future developments. At the device level, analysis of the network of limiting phenomena in (photo)electrochemical cells leads us to propose a straightforward performance metric based on the concepts of maximum energy efficiency and maximum product formation rate, enabling the comparison of different technologies.
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Affiliation(s)
- Gastón O Larrazábal
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zurich, Switzerland
| | - Antonio J Martín
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zurich, Switzerland
| | - Javier Pérez-Ramírez
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich , Vladimir-Prelog-Weg 1, CH-8093 Zurich, Switzerland
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