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Combining photocatalytic hydrogen generation and capsule storage in graphene based sandwich structures

Author

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  • Li Yang

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

  • Xiyu Li

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

  • Guozhen Zhang

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

  • Peng Cui

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

  • Xijun Wang

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

  • Xiang Jiang

    (ICQD/Hefei National Laboratory for Physical Sciences at the Microscale, and Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China
    Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China)

  • Jin Zhao

    (ICQD/Hefei National Laboratory for Physical Sciences at the Microscale, and Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, University of Science and Technology of China
    Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China)

  • Yi Luo

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China
    Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China)

  • Jun Jiang

    (Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), CAS Key Laboratory of Mechanical Behavior and Design of Materials, School of Chemistry and Materials Science, University of Science and Technology of China)

Abstract

The challenge of safe hydrogen storage has limited the practical application of solar-driven photocatalytic water splitting. It is hard to isolate hydrogen from oxygen products during water splitting to avoid unwanted reverse reaction or explosion. Here we propose a multi-layer structure where a carbon nitride is sandwiched between two graphene sheets modified by different functional groups. First-principles simulations demonstrate that such a system can harvest light and deliver photo-generated holes to the outer graphene-based sheets for water splitting and proton generation. Driven by electrostatic attraction, protons penetrate through graphene to react with electrons on the inner carbon nitride to generate hydrogen molecule. The produced hydrogen is completely isolated and stored with a high-density level within the sandwich, as no molecules could migrate through graphene. The ability of integrating photocatalytic hydrogen generation and safe capsule storage has made the sandwich system an exciting candidate for realistic solar and hydrogen energy utilization.

Suggested Citation

  • Li Yang & Xiyu Li & Guozhen Zhang & Peng Cui & Xijun Wang & Xiang Jiang & Jin Zhao & Yi Luo & Jun Jiang, 2017. "Combining photocatalytic hydrogen generation and capsule storage in graphene based sandwich structures," Nature Communications, Nature, vol. 8(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms16049
    DOI: 10.1038/ncomms16049
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    Cited by:

    1. Hu, Liangdong & Ma, Longlong & Hu, Guangzhi & Zhang, Wenjie & Liu, Ying & Xu, Rui & Ge, Wen & Chen, Yubao, 2022. "Utilization of illumination and thermal field in the preparation of jet–fuel components: The photothermic catalysis of Jatropha oil over the M/TiO2–HZSM–5," Energy, Elsevier, vol. 239(PC).

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