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PreprintCC BYChemRxiv

Direct Photo- and Electrothermally Regenerable Adsorbents for Carbon Dioxide Capture Using Conjugated Metal−Organic Frameworks

  • Jinxin Liu1,2
  • Chengning Pan1,2
  • Chao Yang1,2
  • Haowen Lu3,2
  • Mingyu Yang1,2
  • Tao Wang1,2
  • Yahui Zhou1,2
  • Xiangxin Ye1,2
  • Junjun Tan3,2
  • Yan Jing4,5
  • Zheng Meng1,2
5 affiliations
  1. 1State Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science
  2. 2University of Science and Technology of China
  3. 3Hefei National Laboratory
  4. 4Department of Materials Science and Engineering
  5. 5National University of Singapore
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Abstract

Adsorbent regeneration in carbon dioxide capture systems primarily relies on external temperature and pressure swings, posing critical challenges of intensive energy penalties and low cycling rates. Here we demonstrate a direct photo- and electrothermal swing method for CO 2 capture using two-dimensional conjugated MOF Cu 3 (2,3,6,7,10,11-hexahydroxytriphenylene) 2 (Cu 3 (HHTP) 2 ) and its derivatives. Cu 3 (HHTP) 2 releases CO 2 captured at room-temperature through photo- or electrothermal effects by directly applying one-sun irradiation or a voltage of 10 V. The capture-release process operates across 1%-50% CO 2 with a cyclic frequency of 4-5 h -1 and adsorption capacities of 0.04-1.11 mmol g -1 . Incorporating alkylamine groups into Cu 3 (HHTP) 2 further enhances CO 2 adsorption capacity by more than three-fold, with corresponding energy consumptions down to 145 and 60 kJ mol -1 for 1% and 10% CO 2 , respectively, via photothermal regeneration. Structurally integrating energy conversion functions and CO 2 adsorption sites within a single, porous material establishes a new blueprint for solar-driven and electrified carbon management.

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Cite

BibTeXRIS
BibTeX
@misc{liu2026direct,
  title = {{Direct Photo- and Electrothermally Regenerable Adsorbents for Carbon Dioxide Capture Using Conjugated Metal−Organic Frameworks}},
  author = {Jinxin Liu and Chengning Pan and Chao Yang and Haowen Lu and Mingyu Yang and Tao Wang and Yahui Zhou and Xiangxin Ye and Junjun Tan and Yan Jing and Zheng Meng},
  howpublished = {ChemRxiv},
  year = {2026},
  month = oct,
  doi = {10.26434/chemrxiv.15010522/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010522/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Direct Photo- and Electrothermally Regenerable Adsorbents for Carbon Dioxide Capture Using Conjugated Metal−Organic Frameworks
AU  - Jinxin Liu
AU  - Chengning Pan
AU  - Chao Yang
AU  - Haowen Lu
AU  - Mingyu Yang
AU  - Tao Wang
AU  - Yahui Zhou
AU  - Xiangxin Ye
AU  - Junjun Tan
AU  - Yan Jing
AU  - Zheng Meng
PY  - 2026
DA  - 2026/10/15
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15010522/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010522/v1
AB  - Adsorbent regeneration in carbon dioxide capture systems primarily relies on external temperature and pressure swings, posing critical challenges of intensive energy penalties and low cycling rates. Here we demonstrate a direct photo- and electrothermal swing method for CO 2 capture using two-dimensional conjugated MOF Cu 3 (2,3,6,7,10,11-hexahydroxytriphenylene) 2 (Cu 3 (HHTP) 2 ) and its derivatives. Cu 3 (HHTP) 2 releases CO 2 captured at room-temperature through photo- or electrothermal effects by directly applying one-sun irradiation or a voltage of 10 V. The capture-release process operates across 1%-50% CO 2 with a cyclic frequency of 4-5 h -1 and adsorption capacities of 0.04-1.11 mmol g -1 . Incorporating alkylamine groups into Cu 3 (HHTP) 2 further enhances CO 2 adsorption capacity by more than three-fold, with corresponding energy consumptions down to 145 and 60 kJ mol -1 for 1% and 10% CO 2 , respectively, via photothermal regeneration. Structurally integrating energy conversion functions and CO 2 adsorption sites within a single, porous material establishes a new blueprint for solar-driven and electrified carbon management.
ER  -