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Updated: Jun 24, 2026

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping

Published on: July 2, 2012

Solar-Powered CO₂ Capture Using Plasmonic Black Gold Sorbents.

Gunjan Sharma¹, Sushma Kundu¹, Vivek Polshettiwar¹

¹Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India.

ACS Applied Materials & Interfaces

|June 23, 2026

Summary

This summary is machine-generated.

This study presents a novel solar-regenerable carbon dioxide (CO2) capture system. Plasmonic amine sorbents use light alone for desorption, significantly reducing energy use in CO2 capture technologies.

Keywords:

CO2 capture photoswing sorbents plasmonic nanomaterials solar-driven CO2 desorption solid sorbents

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Published on: August 23, 2012

Area of Science:

Materials Science
Chemical Engineering
Environmental Science

Background:

Desorption energy is a major challenge in carbon dioxide (CO2) capture, often requiring energy-intensive methods.
Current CO2 capture technologies rely heavily on thermal or electrochemical swings for sorbent regeneration.

Purpose of the Study:

To develop a solar-regenerable CO2 capture system that utilizes light for complete desorption.
To engineer plasmonic amine sorbents for efficient and low-energy CO2 capture and release.

Main Methods:

Synthesized plasmonic amine sorbents by anchoring tetraethylenepentamine onto black gold supported by nanosilica.
Investigated CO2 capture capacity and light-induced desorption performance.
Utilized kinetic analysis and *in-situ* DRIFTS for mechanistic studies.

Main Results:

Achieved high CO2 capacity of 4.16 mmol g-1.
Demonstrated efficient CO2 desorption using only light, eliminating the need for external heating.
Identified synergistic effects of photothermal conversion and hot electrons in driving nonthermal desorption.
Confirmed reversible ammonium-carbamate photoswitching and sustained performance over multiple cycles.

Conclusions:

Developed a zero-heat, light-driven CO2 capture process.
Established a modular and energy-efficient approach for CO2 capture technology.
Showcased the potential of plasmonic materials for advanced energy applications.