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Photocatalytic hydrogen production using twinned nanocrystals and an unanchored NiSx co-catalyst

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  • Maochang Liu

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

  • Yubin Chen

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

  • Jinzhan Su

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

  • Jinwen Shi

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

  • Xixi Wang

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

  • Liejin Guo

    (International Research Center for Renewable Energy, State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an)

Abstract

Facilitating charge separation as well as surface redox reactions is considered to be central to improving semiconductor-catalysed solar hydrogen generation. To that end, photocatalysts comprising intimately interfaced photo absorbers and co-catalysts have gained much attention. Here, we combine an efficient Cd0.5Zn0.5S (CZS) nanotwinned photocatalyst with a NiSx co-catalyst for photogeneration of hydrogen. We find that an internal quantum efficiency approaching 100% at 425 nm can be achieved for photocatalytic H2 production from water with Na2S/Na2SO3 as hole scavengers. Our results indicate that the NiSx co-catalyst is not anchored on the surface of the host CZS nanotwins and instead exists in the reaction solution as freestanding subnanometre clusters. We propose that charge transfer is accomplished via collisions between the CZS and NiSx clusters, which aids charge separation and inhibits back reaction, leading to high water reduction rates in the suspension.

Suggested Citation

  • Maochang Liu & Yubin Chen & Jinzhan Su & Jinwen Shi & Xixi Wang & Liejin Guo, 2016. "Photocatalytic hydrogen production using twinned nanocrystals and an unanchored NiSx co-catalyst," Nature Energy, Nature, vol. 1(11), pages 1-8, November.
    • Handle: RePEc:nat:natene:v:1:y:2016:i:11:d:10.1038_nenergy.2016.151
    DOI: 10.1038/nenergy.2016.151
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    Cited by:

    1. Ma, Ben-Chi & Lin, Hua & Zhu, Yizhou & Zeng, Zilong & Geng, Jiafeng & Jing, Dengwei, 2022. "A new Concentrated Photovoltaic Thermal-Hydrogen system with photocatalyst suspension as optical liquid filter," Renewable Energy, Elsevier, vol. 194(C), pages 1221-1232.
    2. Quanguo Zhang & Youzhou Jiao & Chao He & Roger Ruan & Jianjun Hu & Jingzheng Ren & Sara Toniolo & Danping Jiang & Chaoyang Lu & Yameng Li & Yi Man & Huan Zhang & Zhiping Zhang & Chenxi Xia & Yi Wang &, 2024. "Biological fermentation pilot-scale systems and evaluation for commercial viability towards sustainable biohydrogen production," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    3. Yaguang Li & Xianhua Bai & Dachao Yuan & Fengyu Zhang & Bo Li & Xingyuan San & Baolai Liang & Shufang Wang & Jun Luo & Guangsheng Fu, 2022. "General heterostructure strategy of photothermal materials for scalable solar-heating hydrogen production without the consumption of artificial energy," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    4. Lakhera, Sandeep Kumar & Rajan, Aswathy & T.P., Rugma & Bernaurdshaw, Neppolian, 2021. "A review on particulate photocatalytic hydrogen production system: Progress made in achieving high energy conversion efficiency and key challenges ahead," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    5. Dong Liu & Tao Ding & Lifeng Wang & Huijuan Zhang & Li Xu & Beibei Pang & Xiaokang Liu & Huijuan Wang & Junhui Wang & Kaifeng Wu & Tao Yao, 2023. "In situ constructing atomic interface in ruthenium-based amorphous hybrid-structure towards solar hydrogen evolution," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    6. Guo, Liejin & Chen, Yubin & Su, Jinzhan & Liu, Maochang & Liu, Ya, 2019. "Obstacles of solar-powered photocatalytic water splitting for hydrogen production: A perspective from energy flow and mass flow," Energy, Elsevier, vol. 172(C), pages 1079-1086.
    7. Yan Guo & Qixin Zhou & Jun Nan & Wenxin Shi & Fuyi Cui & Yongfa Zhu, 2022. "Perylenetetracarboxylic acid nanosheets with internal electric fields and anisotropic charge migration for photocatalytic hydrogen evolution," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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