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2D/2D g-C3N4@BiOI S-scheme heterojunction with gas-liquid-solid triphase interface for highly efficient CO2 photoreduction

具有气-液-固三相界面的二维/二维石墨相氮化碳@碘氧铋S型异质结高效光催化二氧化碳还原

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  • Special Topic: Advanced Energy Catalytic Materials
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Abstract

Over the past decades, there has been considerable research attention dedicated to the conversion of CO2 into valuable chemical fuels such as CH4, CO, and CH3OH through CO2 photoreduction. Despite these efforts, the efficiency of current CO2 photoreduction systems remains unsatisfactory, primarily due to the rapid recombination of photoinduced charges and inadequate co-adsorption of CO2 and H2O molecules. Herein, we present a novel and highly efficient CO2 photoreduction system based on an intimate 2D/2D g-C3N4@BiOI step-scheme (S-scheme) heterojunction constructed on hydrophobic carbon fiber paper. The resulting heterojunction demonstrates outstanding photocatalytic ability for CO2 reduction, achieving high CO selectivity (77.8%) and activity (458.0 µmol h−1 m−2 for CO). The remarkable photocatalytic performance can be attributed to the well-designed S-scheme heterojunction, which enhances charge separation efficiency, and the establishment of a gasliquid-solid triphase interface, ensuring the simultaneous and sufficient supply of CO2 and H2O. This work introduces new perspectives for the design of highly efficient photocatalytic CO2 reduction systems.

摘要

在过去几十年中, 将二氧化碳光还原转化为有用的化学燃料(甲 烷、一氧化碳和甲醇等)受到了极大的关注. 然而, 由于光生电荷的复 合速度快, 二氧化碳和水分子的共吸附不足, 目前的二氧化碳光还原系 统的效率还远远不能令人满意. 本文报道了在疏水碳纤维纸上构建一 个紧密的二维/二维石墨相氮化碳@碘氧铋梯型(S型)异质结, 用于高效 的二氧化碳光还原. 所制备的异质结具有良好的一氧化碳选择性 (77.8%)和活性(458.0 µmol h−1 m−2). 良好的光催化性能归因于良好设 计的S型异质结结构, 提高了电荷分离效率, 以及形成了气-液-固三相 界面, 充分保证了二氧化碳和水的同时供给. 这项工作为高效光催化二 氧化碳还原系统的设计提供了新思路.

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Acknowledgements

This work was supported by the National Key R&D Program of China (2022YFE0114800) and the National Natural Science Foundation of China (22278324 and 52073223)

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Authors and Affiliations

  1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China

    Chao Yang  (杨超), Qinghe Zhang  (张庆贺), Wang Wang  (王往), Bei Cheng  (程蓓) & Shaowen Cao  (曹少文)

  2. Hubei Technology Innovation Center for Advanced Composites, Wuhan University of Technology, Wuhan, 430070, China

    Chao Yang  (杨超), Qinghe Zhang  (张庆贺), Wang Wang  (王往), Bei Cheng  (程蓓) & Shaowen Cao  (曹少文)

  3. Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China

    Jiaguo Yu  (余家国)

Authors
  1. Chao Yang  (杨超)
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  2. Qinghe Zhang  (张庆贺)
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  3. Wang Wang  (王往)
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  5. Jiaguo Yu  (余家国)
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  6. Shaowen Cao  (曹少文)
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Contributions

Author contributions Yang C and Cao S proposed the conceptualization; Yang C and Zhang Q conducted the experiments and data processing; Yang C wrote the original draft; Yang C, Zhang Q, Wang W, and Cao S conducted the formal analysis; Wang W, Cheng B, Yu J, and Cao S conducted the writing-review & editing; Cheng B, Yu J, and Cao S provided the experimental resource; Cao S provided the funding acquisition and finished the final supervision work All the authors contributed to the general discussion.

Corresponding authors

Correspondence to Wang Wang  (王往) or Shaowen Cao  (曹少文).

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Conflict of interest The authors declare that they have no conflict of interest.

Additional information

Supplementary information Supporting data are available in the online version of the paper.

Chao Yang obtained his BS degree in environmental engineering from Hubei Normal University in 2017. Then he obtained his MS degree in environmental chemistry from South-Central Minzu University in 2020. He is now a PhD candidate under the supervision of Prof. Shaowen Cao at the State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology. His current research includes photocatalytic H2O2 evolution, H2 production, and CO2 reduction.

Wang Wang received his PhD degree in physical chemistry in 2020 from Wuhan University. From Oct 2018 to Nov 2019, he was a joint PhD at Northeastern University (USA). Then he was a postdoc at Wuhan University until Sept 2023. His current research interests include the photocatalysis and electrocatalysis for energy and environmental applications.

Shaowen Cao received his PhD degree in materials chemistry & physics in 2010 from Shanghai Institute of Ceramics, Chinese Academy of Sciences. Then he was a Research Fellow at Nanyang Technological University until Feb 2014. From Mar 2018 to Feb 2020, he was a Visiting Scientist at Max Planck Institute of Colloids and Interfaces. His current research interests include the design and fabrication of photocatalytic materials for energy and environmental applications.

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2D/2D g-C3N4@BiOI S-scheme heterojunction with gas-liquid-solid triphase interface for highly efficient CO2 photoreduction

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Yang, C., Zhang, Q., Wang, W. et al. 2D/2D g-C3N4@BiOI S-scheme heterojunction with gas-liquid-solid triphase interface for highly efficient CO2 photoreduction. Sci. China Mater. (2024). https://doi.org/10.1007/s40843-024-2789-0

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