Black Phosphorus-Based Compound with Few Layers for Photocatalytic Water Oxidation - Archive ouverte HAL
Article Dans Une Revue ChemCatChem Année : 2018

Black Phosphorus-Based Compound with Few Layers for Photocatalytic Water Oxidation

Yujin Ji
  • Fonction : Auteur
Lingqiao Kong
  • Fonction : Auteur
Youyong Li
  • Fonction : Auteur
Shengzhong Frank Liu
  • Fonction : Auteur

Résumé

Although black phosphorus (BP) is an interesting 2D nanosheet material with a high hole mobility, its application in the photocatalytic water oxidation for O2 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 Na2S2O4 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.

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Chimie
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Dates et versions

hal-04015971 , version 1 (06-03-2023)

Identifiants

Citer

Junqing Yan, Yujin Ji, Lingqiao Kong, Youyong Li, Miriam Navlani-García, et al.. Black Phosphorus-Based Compound with Few Layers for Photocatalytic Water Oxidation. ChemCatChem, 2018, 10 (16), pp.3424-3428. ⟨10.1002/cctc.201800555⟩. ⟨hal-04015971⟩
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