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Peer-reviewedCC BY-NC 3.0Chemical Science

Electric-field-driven CO2 mass transfer at microdroplet interfaces boosts efficient ethanol generation

  • Haizhong Zhang1,2
  • Xiaojing Chen1,2
  • Chao Zhu1,2
  • Qile Fang3
  • Linbo Qian4
  • Zaiming Chen5
  • Renlan Liu6
  • Shasha Liu1,2
  • Shuang Song1,2
  • Yi Shen1,2,7
7 affiliations
  1. 1Zhejiang Key Laboratory of Low-carbon Control Technology for Industrial Pollution, College of Environment, Zhejiang University of Technology Hangzhou 310014 China +86-571-88320276 +86-571-88320726
  2. 2State Key Laboratory of Green Chemical Synthesis and Conversion, Zhejiang University of Technology Hangzhou 310014 China
  3. 3Advanced Institute of Natural Sciences, Beijing Normal University Zhuhai 519087 China
  4. 4Institute of Soil Science, Chinese Academy of Sciences Nanjing 211135 China
  5. 5School of Environmental Science and Engineering, Zhejiang Gongshang University Hangzhou 310012 China
  6. 6College of Life and Environmental Science, Wenzhou University Wenzhou 325035 China
  7. 7Shaoxing Research Institute, Zhejiang University of Technology Shaoxing 312000 China
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Abstract

The electrocatalytic CO2 reduction reaction (CO2RR) efficiently converts CO2 into high value-added products, but its reaction kinetics are still limited by CO2 mass transfer from the gas atmosphere to the catalyst surface. In this work, a hydrophobic AlCu@b-COF served as a customized microdroplet system catalyst for the CO2RR, achieving a maximum ethanol yield of 23.76 µmol L−1 g−1, representing a 40.97-fold enhancement compared to the conventional bulk phase system. The operando Raman spectroscopy and Debye length calculation analysis revealed an enhanced electric field gradient and compressed electric double layer due to the aggregation of CO32− and related anions at the interface of the microdroplets. Further operando Raman measurements and classical molecular dynamics simulations provided complementary evidence for the interfacial environment associated with CO2˙− transport, supporting a contribution of the enhanced interfacial electric field to CO2˙− mass transfer. This study provides a theoretical basis and technical support for the design and mechanism exploration of microdroplet-induced high-performance reaction systems.

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Cite

BibTeXRIS
BibTeX
@article{zhang2026electricfielddriven,
  title = {{Electric-field-driven CO2 mass transfer at microdroplet interfaces boosts efficient ethanol generation}},
  author = {Haizhong Zhang and Xiaojing Chen and Chao Zhu and Qile Fang and Linbo Qian and Zaiming Chen and Renlan Liu and Shasha Liu and Shuang Song and Yi Shen},
  journal = {Chemical Science},
  year = {2026},
  month = sep,
  doi = {10.1039/d6sc06146j},
  url = {https://doi.org/10.1039/d6sc06146j},
  note = {CC BY-NC 3.0},
}
RIS
TY  - JOUR
TI  - Electric-field-driven CO2 mass transfer at microdroplet interfaces boosts efficient ethanol generation
AU  - Haizhong Zhang
AU  - Xiaojing Chen
AU  - Chao Zhu
AU  - Qile Fang
AU  - Linbo Qian
AU  - Zaiming Chen
AU  - Renlan Liu
AU  - Shasha Liu
AU  - Shuang Song
AU  - Yi Shen
PY  - 2026
DA  - 2026/09/16
JO  - Chemical Science
DO  - 10.1039/d6sc06146j
UR  - https://doi.org/10.1039/d6sc06146j
AB  - The electrocatalytic CO2 reduction reaction (CO2RR) efficiently converts CO2 into high value-added products, but its reaction kinetics are still limited by CO2 mass transfer from the gas atmosphere to the catalyst surface. In this work, a hydrophobic AlCu@b-COF served as a customized microdroplet system catalyst for the CO2RR, achieving a maximum ethanol yield of 23.76 µmol L−1 g−1, representing a 40.97-fold enhancement compared to the conventional bulk phase system. The operando Raman spectroscopy and Debye length calculation analysis revealed an enhanced electric field gradient and compressed electric double layer due to the aggregation of CO32− and related anions at the interface of the microdroplets. Further operando Raman measurements and classical molecular dynamics simulations provided complementary evidence for the interfacial environment associated with CO2˙− transport, supporting a contribution of the enhanced interfacial electric field to CO2˙− mass transfer. This study provides a theoretical basis and technical support for the design and mechanism exploration of microdroplet-induced high-performance reaction systems.
SN  - 2041-6520
SN  - 2041-6539
ER  -