Citation: Chenglin Shu, Yunzhe Zhou, Shuixiang Zou, Caiping Liu, Maochun Hong, Mingyan Wu. Inherent charge channels in a hydrogen-bonded framework for efficiently capturing CO₂ from humid flue gas[J]. Chinese Chemical Letters, ;2026, 37(11): 111802. doi: 10.1016/j.cclet.2025.111802 shu

Inherent charge channels in a hydrogen-bonded framework for efficiently capturing CO₂ from humid flue gas

Chenglin Shu ^{a, 1} ,
Yunzhe Zhou ^{a, c, 1} ,
Shuixiang Zou ^{a, 1} ,
Caiping Liu ^a ,
Maochun Hong ^a ,
Mingyan Wu ^{a, b, *,}

a.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
b.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, China
c.
University of Chinese Academy of Sciences, Beijing 100049, China

wumy@fjirsm.ac.cn

Received Date: 26 June 2025
Revised Date: 22 August 2025
Accepted Date: 8 September 2025
Available Online: 8 September 2025

Figures(6)

The capture of CO₂ from flue gas is of utmost significance as it can significantly reduce the heavy emissions of CO₂ from power plants. However, the efficient capture of CO₂ from flue gas using porous materials remains a challenge under practical conditions. The adsorption sites may become inactive due to weaker interactions at high temperatures and/or coordination by water molecules in humid conditions. To address the issue, a stable hydrogen-bonded metal-complex framework (FJI-W35) stabilized by rarely seen charge-assisted C–H···O hydrogen bonds has been deliberately synthesized. In FJI-W35, positive charge sites are arranged in an orderly manner on the pore surfaces of the one-dimensional triangular channels. Single component gas isotherms exhibit that this porous framework can effectively capture CO₂ from room temperature to 373 K but barely adsorb N₂. Dynamic breakthrough experiments validate this material can selectively capture CO₂ from flue gas over a wide range of temperature and humidity, which is of great significance in the practical CO₂ capture process. Furthermore, CO₂-loaded single-crystal structure verifies that the inherent charged sites contribute much to the excellent separation performance.
- Hydrogen-bonded framework,
- Charge channels,
- Water stability,
- Capturing CO₂,
- Humid flue gas separation
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沈阳化工大学材料科学与工程学院沈阳 110142

Inherent charge channels in a hydrogen-bonded framework for efficiently capturing CO2 from humid flue gas

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通讯作者: 陈斌, bchen63@163.com

Inherent charge channels in a hydrogen-bonded framework for efficiently capturing CO₂ from humid flue gas