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    題名: Atomically dispersed Janus nickel sites on red phosphorus for photocatalytic overall water splitting
    作者: Wang, Menglong;Xu, Shuai;Zhou, Prof. Zhaohui;Dong, Prof. Chung-Li;Guo, Dr. Xu;Chen, Jeng-Lung;Huang, Dr. Yu-Cheng;Shen, Prof. Shaohua;Chen, Prof. Yubin;Guo, Prof. Liejin;Burda, Prof. Clemens
    關鍵詞: Nickel;Photocatalysis;Red Phosphorus;Single-Atom Catalysts;Water Splitting
    日期: 2022-07-18
    上傳時間: 2023-05-15 12:10:32 (UTC+8)
    出版者: Wiley Online Library
    摘要: Single-atom nickel catalysts hold great promise for photocatalytic water splitting due to their plentiful active sites and cost-effectiveness. Herein, we adopt a reactive-group guided strategy to prepare atomically dispersed nickel catalysts on red phosphorus. The hydrothermal treatment of red phosphorus leads to the formation of P−H and P−OH groups, which behave as the reactive functionalities to generate the dual structure of single-atom P−Ni and P−O−Ni catalytic sites. The produced single-atom sites provide two different functions: P−Ni for water reduction and P−O−Ni for water oxidation. Benefitting from this specific Janus structure, Ni-red phosphorus shows an elevated hydrogen evolution rate compared to Ni nanoparticle-modified red phosphorus under visible-light irradiation. The hydrogen evolution rate was additionally enhanced with increased reaction temperature, reaching 91.51 μmol h−1 at 70 °C, corresponding to an apparent quantum efficiency of 8.9 % at 420 nm excitation wavelength.
    關聯: Angewandte Chemie 61(29), e202204711
    DOI: 10.1002/anie.202204711
    顯示於類別:[電機工程學系暨研究所] 期刊論文

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