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Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting
Wang, Zheng; Luo, Ying; Hisatomi, Takashi; Vequizo, Junie Jhon M.; Suzuki, Sayaka; Chen, Shanshan; Nakabayashi, Mamiko; Lin, Lihua; Pan, Zhenhua; Kariya, Nobuko; Yamakata, Akira; Shibata, Naoya; Takata, Tsuyoshi; Teshima, Katsuya; Domen, Kazunari
2021
Source PublicationNATURE COMMUNICATIONS
Volume12Issue:1Pages:1005
AbstractOxynitride 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 H-2 evolution reactions via sequential decoration of Pt cocatalyst by impregnation-reduction followed by site-selective photodeposition. The Pt-loaded BaTaO2N photocatalyst evolves H-2 over 100 times more efficiently than before, with an apparent quantum yield of 6.8% at the wavelength of 420nm, 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. Activation of narrow-bandgap photocatalysts holds key to applicable solar-to-hydrogen energy conversion. Here, the authors demonstrate effective sequential cocatalyst decoration for such narrow-bandgap photocatalysts to realise highly-efficient hydrogen evolution and Z-scheme water splitting.
Department环境化学与生态毒理学国家重点实验室
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46953
Collection环境化学与生态毒理学国家重点实验室
Affiliation1.Shinshu Univ, Res Initiat Supra Mat, Interdisciplinary Cluster Cutting Edge Res, Nagano, Nagano, Japan
2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing, Peoples R China
3.Shinshu Univ, Grad Sch Med Sci & Technol, Dept Sci & Technol, Nagano, Japan
4.Shinshu Univ, Fac Engn, Dept Mat Chem, Nagano, Japan
5.Univ Tokyo, Inst Engn Innovat, Tokyo, Japan
6.Mitsubishi Chem Corp, Sci & Innovat Ctr, Yokohama, Kanagawa, Japan
7.Toyota Technol Inst, Grad Sch Engn, Nagoya, Aichi, Japan
8.Univ Tokyo, Off Univ Prof, Tokyo, Japan
Recommended Citation
GB/T 7714
Wang, Zheng,Luo, Ying,Hisatomi, Takashi,et al. Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting[J]. NATURE COMMUNICATIONS,2021,12(1):1005.
APA Wang, Zheng.,Luo, Ying.,Hisatomi, Takashi.,Vequizo, Junie Jhon M..,Suzuki, Sayaka.,...&Domen, Kazunari.(2021).Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting.NATURE COMMUNICATIONS,12(1),1005.
MLA Wang, Zheng,et al."Sequential cocatalyst decoration on BaTaO2N towards highly-active Z-scheme water splitting".NATURE COMMUNICATIONS 12.1(2021):1005.
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