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Achieving solar overall water splitting with hybrid photosystems of photosystem II and artificial photocatalysts

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  • Wangyin Wang

    (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian National Laboratory for Clean Energy
    Dalian National Laboratory for Clean Energy
    Graduate University of Chinese Academy of Sciences)

  • Jun Chen

    (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian National Laboratory for Clean Energy
    Dalian National Laboratory for Clean Energy)

  • Can Li

    (State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Dalian National Laboratory for Clean Energy
    Dalian National Laboratory for Clean Energy)

  • Wenming Tian

    (Graduate University of Chinese Academy of Sciences
    State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

Abstract

Solar overall water splitting is a promising sustainable approach for solar-to-chemical energy conversion, which harnesses solar irradiation to oxidize water to oxygen and reduce the protons to hydrogen. The water oxidation step is vital but difficult to achieve through inorganic photocatalysis. However, nature offers an efficient light-driven water-oxidizing enzyme, photosystem II (PSII). Here we report an overall water splitting natural–artificial hybrid system, in which the plant PSII and inorganic photocatalysts (for example, Ru/SrTiO3:Rh), coupled with an inorganic electron shuttle [Fe(CN)63−/Fe(CN)64−], are integrated and dispersed in aqueous solutions. The activity of this hybrid photosystem reaches to around 2,489 mol H2 (mol PSII)−1 h−1 under visible light irradiation, and solar overall water splitting is also achieved under solar irradiation outdoors. The optical imaging shows that the hybrid photosystems are constructed through the self-assembly of PSII adhered onto the inorganic photocatalyst surface. Our work may provide a prototype of natural–artificial hybrids for developing autonomous solar water splitting system.

Suggested Citation

  • Wangyin Wang & Jun Chen & Can Li & Wenming Tian, 2014. "Achieving solar overall water splitting with hybrid photosystems of photosystem II and artificial photocatalysts," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5647
    DOI: 10.1038/ncomms5647
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    1. Feng Gao & Guangyu Liu & Aobo Chen & Yangguang Hu & Huihui Wang & Jiangyuan Pan & Jinglei Feng & Hongwei Zhang & Yujie Wang & Yuanzeng Min & Chao Gao & Yujie Xiong, 2023. "Artificial photosynthetic cells with biotic–abiotic hybrid energy modules for customized CO2 conversion," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Cheng, Ya-Hsin & Nguyen, Van-Huy & Chan, Hsiang-Yu & Wu, Jeffrey C.S. & Wang, Wei-Hon, 2015. "Photo-enhanced hydrogenation of CO2 to mimic photosynthesis by CO co-feed in a novel twin reactor," Applied Energy, Elsevier, vol. 147(C), pages 318-324.
    3. Ma, Yufei & Guan, Guoqing & Hao, Xiaogang & Cao, Ji & Abudula, Abuliti, 2017. "Molybdenum carbide as alternative catalyst for hydrogen production – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 75(C), pages 1101-1129.

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