Related Experiment Video
Updated: May 2, 2026
08:00
Author Spotlight: Standardizing the Development of Amine-Based Silica Composites as CO2 Adsorbents for Direct Air Capture
Published on: September 29, 2023
3.1K
Supercapacitive swing adsorption of carbon dioxide
Berenika Kokoszka1, Nina K Jarrah, Cong Liu
1Department of Chemistry, Lehigh University, 6 East Packer Avenue (USA).
Angewandte Chemie (International Ed. in English)
|March 12, 2014
Summary
A new electrical effect, supercapacitive swing adsorption (SSA), enables reversible carbon dioxide capture using porous carbon materials. This method utilizes capacitive charging and discharging for efficient CO2 adsorption and release.
Area of Science:
- Materials Science
- Electrochemistry
- Environmental Science
Background:
- Carbon dioxide (CO2) capture is crucial for mitigating climate change.
- Existing CO2 capture technologies face challenges in efficiency and cost.
- Supercapacitive swing adsorption (SSA) presents a novel electrochemical approach.
Purpose of the Study:
- To report and describe the supercapacitive swing adsorption (SSA) effect.
- To demonstrate the reversible adsorption and desorption of CO2 using SSA.
- To investigate the mechanism of CO2 uptake and release in porous carbon materials.
Main Methods:
- Utilizing electrically conducting, nanoporous carbon materials.
- Employing an aqueous electrolyte in contact with CO2 gas.
- Applying capacitive charging and discharging cycles to supercapacitor electrodes.
Main Results:
- The SSA effect facilitates spontaneous, reversible CO2 adsorption and desorption.
- Electrolyte ion organization into an electric double layer drives CO2 uptake.
- Selective CO2 capture and release are achieved through charge/discharge cycles.
Conclusions:
- The SSA effect offers a promising new pathway for CO2 capture.
- This electrochemical method provides a tunable and efficient means for CO2 management.
- Further research into SSA could lead to advanced carbon capture technologies.
Related Concept Videos
01:28Adsorption of Gases on Solids
290
Adsorption is a process where molecules, known as the adsorbates, accumulate on a surface, which is referred to as the adsorbent or substrate. Occurring at the solid-gas interface, this phenomenon is crucial in various scientific and industrial contexts. The reverse of adsorption is desorption.Two types of adsorptions exist: physical (physisorption) and chemical (chemisorption). Physisorption involves gas molecules held to the solid's surface by relatively weak intermolecular van der Waals...
290
01:18Supercritical Fluid Chromatography
1.5K
Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
SFC utilizes a supercritical fluid mobile phase,...
1.5K
01:25MOS Capacitor
1.8K
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
1.8K
01:29Adsorption Isotherms I
235
Adsorption isotherms are mathematical models that describe how molecules in a gas or liquid phase interact with surfaces. Two of the most common isotherm models are the Langmuir and Freundlich isotherms, which relate to Type I monolayer chemisorption. The Langmuir model is based on four key assumptions:• Adsorption cannot exceed monolayer coverage.• All surface sites are equivalent.• Molecules adsorb only at vacant sites.• There are no interactions between adsorbed...
235
01:25Adsorption Isotherms II
144
Brunauer, Emmett, and Teller (BET) introduced a theory in 1938 that modified Langmuir's assumptions to explain multilayer physical adsorption. This theory is applicable to Type II isotherms and provides a more realistic picture of adsorption processes. The BET theory assumes a uniform solid surface with localized adsorption sites, where adsorption at one site doesn't affect adsorption at neighboring sites. This theory also allows for the possibility of additional molecules being adsorbed on top...
144
01:28Carbon-dioxide Fixation
873
Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
873