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Chemical Feedback in the Self-Assembly and Function of Air–Liquid Interfaces: Insight into the Bottlenecks of CO2 Direct Air Capture

Journal Article · · ACS Applied Materials and Interfaces

As fossil fuels remain a major source of energy throughout the world, developing efficient negative emission technologies, such as direct air capture (DAC), which remove carbon dioxide (CO2) from the air, becomes critical for mitigating climate change. Although all DAC processes involve CO2 transport from air into a sorbent/solvent, through an air–solid or air–liquid interface, the fundamental roles the interfaces play in DAC remain poorly understood. In this work, we study the interfacial behavior of amino acid (AA) solvents used in DAC through a combination of vibrational sum frequency generation spectroscopy and molecular dynamics simulations. This study revealed that the absorption of atmospheric CO2 has antagonistic effects on subsequent capture events that are driven by changes in bulk pH and specific ion effects that feedback on surface organization and interactions. Among the three AAs (leucine, valine, and phenylalanine) studied, we identify and separate behaviors from CO2 loading, chemical changes, variations in pH, and specific ion effects that tune structural and chemical degrees of freedom at the air–aqueous interface. The fundamental mechanistic findings described here are anticipated to enable new approaches to DAC based on exploiting interfaces as a tool to address climate change.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division (CSGB)
Grant/Contract Number:
AC05-00OR22725; AC02-05CH11231
OSTI ID:
1973348
Journal Information:
ACS Applied Materials and Interfaces, Journal Name: ACS Applied Materials and Interfaces Journal Issue: 15 Vol. 15; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (65)

A revisit to the Gibbs dividing surfaces and helium adsorption journal October 2011
Surface tension of amino acid solutions: A hydrophobicity scale of the amino acid residues journal April 1974
Propensity of soft ions for the air/water interface journal August 2004
Equilibria of MEA, DEA and AMP with Bicarbonate and Carbamate: A Raman Study journal January 2013
A Compararitive Review of Next-generation Carbon Capture Technologies for Coal-fired Power Plant journal July 2017
Role of the cationic headgroup to conformational changes undergone by shorter alkyl chain surfactant and water molecules at the air-liquid interface journal May 2020
Harnessing flexibility potential of flexible carbon capture power plants for future low carbon power systems: Review journal January 2018
GROMACS: High performance molecular simulations through multi-level parallelism from laptops to supercomputers journal September 2015
Amino acid adsorption on hydrophilic TiO2: A sum frequency generation vibrational spectroscopy study journal May 2009
Hollow Fiber Membrane Contactors in CO2 Desorption: A Review journal December 2020
Direct Air Capture of CO 2 with Aqueous Amino Acids and Solid Bis-iminoguanidines (BIGs) journal November 2019
Force Field Benchmark of Amino Acids. 2. Partition Coefficients between Water and Organic Solvents journal July 2018
Charge State Dependence of Amino Acid Propensity at Water Surface: Mechanisms Elucidated by Molecular Dynamics Simulations journal May 2021
Interfacial Insights into a Carbon Capture System: CO2 Uptake to an Aqueous Monoethanolamine Surface journal October 2017
Tuning CO2 Capture at the Gas/Amine Solution Interface by Changing the Solvent Polarity journal November 2020
Stability of a Monoethanolamine-CO2 Zwitterion at the Vapor/Liquid Water Interface: Implications for Low Partial Pressure Carbon Capture Technologies journal April 2021
1.14*CM1A-LBCC: Localized Bond-Charge Corrected CM1A Charges for Condensed-Phase Simulations journal January 2017
Hydrogen-Bond Networks near Supported Lipid Bilayers from Vibrational Sum Frequency Generation Experiments and Atomistic Simulations journal April 2018
pH Dependence of Interfacial Water in the Presence of Amino Acid Side Chains Revealed by Heterodyne-Detected Sum-Frequency Generation Spectroscopy journal October 2016
Solvent Isotope Effect on Biomolecular Adsorption at Hydrophobic Surfaces journal July 2017
Solvent Isotopic Effects on a Surfactant Headgroup at the Air–Liquid Interface journal June 2018
Amino Acids Are Driven to the Interface by Salts and Acidic Environments journal March 2022
Liquid–Gas Interface of Iron Aqueous Solutions and Fenton Reagents journal March 2022
Hydrogen-Bonding Structure at Zwitterionic Lipid/Water Interface journal December 2015
Central Role of Bicarbonate Anions in Charging Water/Hydrophobic Interfaces journal December 2017
Hydrogen-Bond-Driven Chemical Separations: Elucidating the Interfacial Steps of Self-Assembly in Solvent Extraction journal June 2020
Ion Pairing Mediates Molecular Organization Across Liquid/Liquid Interfaces journal July 2021
Nanoparticle-Induced Disorder at Complex Liquid–Liquid Interfaces: Effects of Curvature and Compositional Synergy on Functional Surfaces journal September 2021
Second Harmonic Spectroscopy of Aqueous Nano- and Microparticle Interfaces journal April 2006
Specific Ion Effects at the Air/Water Interface journal April 2006
Ammonium Carbonate, Ammonium Bicarbonate, and Ammonium Carbamate Equilibria: A Raman Study journal January 1995
An SFG Study of Interfacial Amino Acids at the Hydrophilic SiO 2 and Hydrophobic Deuterated Polystyrene Surfaces journal April 2011
Ionization state of l-Phenylalanine at the Air–Water Interface journal January 2013
Development and Testing of the OPLS All-Atom Force Field on Conformational Energetics and Properties of Organic Liquids journal January 1996
Ultrafast Reorientational Dynamics of Leucine at the Air–Water Interface journal January 2016
Reduced Acid Dissociation of Amino-Acids at the Surface of Water journal March 2017
Iron(III) Speciation Observed at Aqueous and Glycerol Surfaces: Vibrational Sum Frequency and X-ray journal July 2019
Investigations of the Potential-Dependent Structure of Phenylalanine on the Glassy Carbon Electrode by Infrared−Visible Sum Frequency Generation journal August 2002
Orientation and Conformation of Amino Acids in Monolayers Adsorbed at an Oil/Water Interface As Determined by Vibrational Sum-Frequency Spectroscopy journal November 2002
Molecular Dynamics Simulations of CO 2 at an Ionic Liquid Interface: Adsorption, Ordering, and Interfacial Crossing journal August 2010
Phase-Sensitive Sum Frequency Revealing Accommodation of Bicarbonate Ions, and Charge Separation of Sodium and Carbonate Ions within the Air/Water Interface journal June 2011
Structure of Leucine Adsorbed on Polystyrene from Nonlinear Vibrational Spectroscopy Measurements, Molecular Dynamics Simulations, and Electronic Structure Calculations journal May 2011
Adsorption of Amino Acids and Dipeptides to the Hydrophobic Polystyrene Interface Studied by SFG and QCM: The Special Case of Phenylalanine journal May 2012
Ionic Binding of Na + versus K + to the Carboxylic Acid Headgroup of Palmitic Acid Monolayers Studied by Vibrational Sum Frequency Generation Spectroscopy journal July 2009
Structure of Phenylalanine Adsorbed on Polystyrene from Nonlinear Vibrational Spectroscopy Measurements and Electronic Structure Calculations journal May 2010
Electric Field Reversal of Na 2 SO 4 , (NH 4 ) 2 SO 4 , and Na 2 CO 3 Relative to CaCl 2 and NaCl at the Air/Aqueous Interface Revealed by Heterodyne Detected Phase-Sensitive Sum Frequency journal September 2011
Amine-based capture of CO2 for utilization and storage journal September 2020
Second-order spectral lineshapes from charged interfaces journal October 2017
Molecular insight into carboxylic acid–alkali metal cations interactions: reversed affinities and ion-pair formation revealed by non-linear optics and simulations journal January 2019
Interface-enhanced CO2 capture via the synthetic effects of a nanomaterial-supported ionic liquid thin film journal January 2021
Recent advances in direct air capture by adsorption journal January 2022
Sum frequency vibrational spectroscopy of leucine molecules adsorbed at air–water interface journal April 2004
A general purpose model for the condensed phases of water: TIP4P/2005 journal December 2005
Theoretical vibrational sum-frequency generation spectroscopy of water near lipid and surfactant monolayer interfaces journal November 2014
Molecular dynamics study of structure and vibrational spectra at zwitterionoic lipid/aqueous KCl, NaCl, and CaCl2 solution interfaces journal February 2018
Unexpected finite size effects in interfacial systems: Why bigger is not always better—Increase in uncertainty of surface tension with bulk phase width journal June 2018
Quantitative spectral and orientational analysis in surface sum frequency generation vibrational spectroscopy (SFG-VS) journal April 2005
Adsorption of amino acids on hydrophilic surfaces journal May 2008
A review of direct air capture (DAC): scaling up commercial technologies and innovating for the future journal April 2021
LigParGen web server: an automatic OPLS-AA parameter generator for organic ligands journal April 2017
CHEMISTRY: Getting Specific About Specific Ion Effects journal February 2008
Direct Air Capture of CO2 Using Solvents journal June 2022
Technological Options for Direct Air Capture: A Comparative Process Engineering Review journal June 2022
Environmental Chemistry at Vapor/Water Interfaces: Insights from Vibrational Sum Frequency Generation Spectroscopy journal May 2012
Quantitative Sum-Frequency Generation Vibrational Spectroscopy of Molecular Surfaces and Interfaces: Lineshape, Polarization, and Orientation journal April 2015

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