1. Black Phosphorus‐Based Compound with Few Layers for Photocatalytic Water Oxidation.
- Author
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Yan, Junqing, Ji, Yujin, Kong, Lingqiao, Li, Youyong, Navlani‐García, Miriam, Liu, Shengzhong (Frank), Kuwahara, Yasutaka, Mori, Kohsuke, Che, Michel, and Yamashita, Hiromi
- Subjects
PHOSPHORUS ,PHOTOCATALYTIC oxidation ,OXIDATION ,IRRADIATION ,HYDROXIDES - Abstract
Abstract: Although black phosphorus (BP) is an interesting 2D nanosheet material with a high hole mobility, its application in the photocatalytic water oxidation for O
2 evolution is not reported yet. Herein the use of BP coupled with a reductive hydroxide, Ni(OH)2 , is reported for the first time. The developed photo‐assisted process confirms that the BP XPS measurements confirm that the oxidation state of BP is reduced through the photo‐assisted loading method. The obtained P−Ni(OH)2 samples present the steady and efficient photocatalytic water splitting for O2 generation. Under the simulated sunlight irradiation in 0.1 M Na2 S2 O4 solution, the O2 generation rate can reach up to 15.7 μmol/(gcatalyst *h) or 224.3 μmol/(gBP *h). The density functional theory (DFT) calculation suggests that the electrons and holes move to surface of BP and Ni(OH)2 , respectively. The merit of self‐polarization of P−Ni(OH)2 ensures the stability of BP and achieves the photocatalytic O2 generation from water. [ABSTRACT FROM AUTHOR]- Published
- 2018
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