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Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting

Author

Listed:
  • Zheng Wang

    (Shinshu University
    Chinese Academy of Sciences)

  • Ying Luo

    (Shinshu University)

  • Takashi Hisatomi

    (Shinshu University)

  • Junie Jhon M. Vequizo

    (Shinshu University)

  • Sayaka Suzuki

    (Shinshu University)

  • Shanshan Chen

    (Shinshu University)

  • Mamiko Nakabayashi

    (Institute of Engineering Innovation, The University of Tokyo)

  • Lihua Lin

    (Shinshu University)

  • Zhenhua Pan

    (Shinshu University)

  • Nobuko Kariya

    (Mitsubishi Chemical Corporation)

  • Akira Yamakata

    (Toyota Technological Institute)

  • Naoya Shibata

    (Institute of Engineering Innovation, The University of Tokyo)

  • Tsuyoshi Takata

    (Shinshu University)

  • Katsuya Teshima

    (Shinshu University
    Shinshu University)

  • Kazunari Domen

    (Shinshu University
    The University of Tokyo)

Abstract

Oxynitride photocatalysts hold promise for renewable solar hydrogen production via water splitting owing to their intense visible light absorption. Cocatalyst loading is essential for activation of such oxynitride photocatalysts. However, cocatalyst nanoparticles form aggregates and exhibit weak interaction with photocatalysts, which prevents eliciting their intrinsic photocatalytic performance. Here, we demonstrate efficient utilization of photoexcited electrons in a single-crystalline particulate BaTaO2N photocatalyst prepared with the assistance of RbCl flux for H2 evolution reactions via sequential decoration of Pt cocatalyst by impregnation-reduction followed by site-selective photodeposition. The Pt-loaded BaTaO2N photocatalyst evolves H2 over 100 times more efficiently than before, with an apparent quantum yield of 6.8% at the wavelength of 420 nm, from a methanol aqueous solution, and a solar-to-hydrogen energy conversion efficiency of 0.24% in Z-scheme water splitting. Enabling uniform dispersion and intimate contact of cocatalyst nanoparticles on single-crystalline narrow-bandgap particulate photocatalysts is a key to efficient solar-to-chemical energy conversion.

Suggested Citation

  • Zheng Wang & Ying Luo & Takashi Hisatomi & Junie Jhon M. Vequizo & Sayaka Suzuki & Shanshan Chen & Mamiko Nakabayashi & Lihua Lin & Zhenhua Pan & Nobuko Kariya & Akira Yamakata & Naoya Shibata & Tsuyo, 2021. "Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21284-3
    DOI: 10.1038/s41467-021-21284-3
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    Cited by:

    1. Aubaid Ullah & Nur Awanis Hashim & Mohamad Fairus Rabuni & Mohd Usman Mohd Junaidi, 2023. "A Review on Methanol as a Clean Energy Carrier: Roles of Zeolite in Improving Production Efficiency," Energies, MDPI, vol. 16(3), pages 1-35, February.
    2. Lihua Lin & Yiwen Ma & Junie Jhon M. Vequizo & Mamiko Nakabayashi & Chen Gu & Xiaoping Tao & Hiroaki Yoshida & Yuriy Pihosh & Yuta Nishina & Akira Yamakata & Naoya Shibata & Takashi Hisatomi & Tsuyosh, 2024. "Efficient and stable visible-light-driven Z-scheme overall water splitting using an oxysulfide H2 evolution photocatalyst," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    3. Jiadong Xiao & Mamiko Nakabayashi & Takashi Hisatomi & Junie Jhon M. Vequizo & Wenpeng Li & Kaihong Chen & Xiaoping Tao & Akira Yamakata & Naoya Shibata & Tsuyoshi Takata & Yasunobu Inoue & Kazunari D, 2023. "Sub-50 nm perovskite-type tantalum-based oxynitride single crystals with enhanced photoactivity for water splitting," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    4. Jie Huang & Yuyang Kang & Jianan Liu & Tingting Yao & Jianhang Qiu & Peipei Du & Biaohong Huang & Weijin Hu & Yan Liang & Tengfeng Xie & Chunlin Chen & Li-Chang Yin & Lianzhou Wang & Hui-Ming Cheng & , 2023. "Gradient tungsten-doped Bi3TiNbO9 ferroelectric photocatalysts with additional built-in electric field for efficient overall water splitting," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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