Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO<sub>2</sub> capture

Peng Tan; Yao Jiang; Qiurong Wu; Chen Gu; Shichao Qi; Qiang Zhang; Xiaoqin Liu; Linbing Sun

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Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture

Recent Advances in Adsorptive Separation Materials and Technologies | Updated：2026-01-06

- Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture
- Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture
- 中国化学工程学报（英文版） 2022年42卷第2期页码：104-111
- Affiliations：
  
  1. State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University,Nanjing,China,211816
  2. Department of Chemistry, Washington State University, Pullman,WA,United States,99163
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2022
- Accepted：
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Peng Tan, Yao Jiang, Qiurong Wu, 等. Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture[J]. 中国化学工程学报（英文版）, 2022,42(2):104-111.

capture[J]. 中国化学工程学报, 2022, 42(2): 104-111.
Peng Tan, Yao Jiang, Qiurong Wu, 等. Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture[J]. 中国化学工程学报（英文版）, 2022,42(2):104-111. DOI：

capture[J]. 中国化学工程学报, 2022, 42(2): 104-111. DOI：

摘要

Abstract

Amines in porous materials have been employed as active species for the selective CO

adsorption from natural gas because of their target-specific interactions. Nevertheless

it is difficult to modulate such strong interactions to reach a high efficiency in the adsorption processes. Herein

we fabricated light-responsive adsorbents with tunable adsorbent-adsorbate interactions for CO

capture. The adsorbents were synthesized by introducing primary and secondary amines into a mesoporous silica that had been grafted with azobenzene groups on the surfaces. The target-specific amine sites render the adsorbents significantly selective in the uptake of CO

over CH

and the azobenzene groups were used as light-responsive switches to influence the adsorbent-adsorbate interactions. The adsorbents can freely adsorb CO

when the azobenzene groups are in the

trans

state. Ultraviolet-light irradiation makes the azobenzene groups transform to the

cis

configuration

which greatly hinders amines in the uptake of CO

. The caused difference of adsorpti

on capacity can reach 34.9%. The alternative irradiation by ultraviolet- and visible-light can lead to a recyclable regulation on adsorption performance. The changes of the electrostatic potentials of amines are responsible for the light-induced regulation on adsorption.

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Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO2 capture

Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO2 capture

DOI：

摘要

Abstract

关键词

Keywords

references

Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture

Light-responsive adsorbents with tunable adsorbent-adsorbate interactions for selective CO₂ capture