Black phosphorus supported Ni2P co-catalyst on graphitic carbon nitride enabling simultaneous boosting charge separation and surface reaction

Ramireddy Boppella, Wooseok Yang, Jeiwan Tan, Hyeok Chan Kwon, Jaemin Park, Joo Ho Moon

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Rational design and engineering of highly active co-catalysts made of stable and earth-abundant elements is essential to boost the photocatalytic water splitting performances. This paper reports a 2D-black phosphorus (BP) supported Ni2P (2D-Ni2P@BP) as a non-precious heterostructure co-catalyst coupled with a 2D porous graphitic carbon nitride nanosheet (CN NSs) photocatalyst to induce visible light photocatalytic hydrogen production. The resulting 2D-Ni2P@BP/CN composite structure exhibits a remarkable visible light photocatalytic H2 evolution activity of 858.2 μmol h−1 g−1, revealing ∼50- and ∼5-fold enhancement compared to that of a pristine CN reference and Pt/CN sample, respectively. The dramatic advancement in H2 evolution could be ascribe to the superior hydrogen evolution reduction (HER) activity of Ni2P@BP. The excellent HER activity arises from the synergetic effect between BP and Ni2P in which BP, with its superior electron mobility, is believed to accelerate the charge separation/transfer by mediating the photogenerated electrons from CN NSs to the surface of the catalytically active sites of Ni2P, while Ni2P promotes the surface reduction reaction by lowering the H2-evolution overpotential. It is considered that this work provides a new paradigm for designing advanced, stable, and cost-effective photocatalyst systems for the practical implementation of solar hydrogen production.

Original languageEnglish
Pages (from-to)422-430
Number of pages9
JournalApplied Catalysis B: Environmental
Volume242
DOIs
Publication statusPublished - 2019 Mar 1

Fingerprint

Carbon nitride
Surface reactions
Phosphorus
catalyst
phosphorus
Catalysts
carbon
hydrogen
Nanosheets
Photocatalysts
Hydrogen production
Hydrogen
electron
Electron mobility
Composite structures
Chemical elements
Heterojunctions
cyanogen
Thermodynamic properties
Earth (planet)

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Environmental Science(all)
  • Process Chemistry and Technology

Cite this

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title = "Black phosphorus supported Ni2P co-catalyst on graphitic carbon nitride enabling simultaneous boosting charge separation and surface reaction",
abstract = "Rational design and engineering of highly active co-catalysts made of stable and earth-abundant elements is essential to boost the photocatalytic water splitting performances. This paper reports a 2D-black phosphorus (BP) supported Ni2P (2D-Ni2P@BP) as a non-precious heterostructure co-catalyst coupled with a 2D porous graphitic carbon nitride nanosheet (CN NSs) photocatalyst to induce visible light photocatalytic hydrogen production. The resulting 2D-Ni2P@BP/CN composite structure exhibits a remarkable visible light photocatalytic H2 evolution activity of 858.2 μmol h−1 g−1, revealing ∼50- and ∼5-fold enhancement compared to that of a pristine CN reference and Pt/CN sample, respectively. The dramatic advancement in H2 evolution could be ascribe to the superior hydrogen evolution reduction (HER) activity of Ni2P@BP. The excellent HER activity arises from the synergetic effect between BP and Ni2P in which BP, with its superior electron mobility, is believed to accelerate the charge separation/transfer by mediating the photogenerated electrons from CN NSs to the surface of the catalytically active sites of Ni2P, while Ni2P promotes the surface reduction reaction by lowering the H2-evolution overpotential. It is considered that this work provides a new paradigm for designing advanced, stable, and cost-effective photocatalyst systems for the practical implementation of solar hydrogen production.",
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Black phosphorus supported Ni2P co-catalyst on graphitic carbon nitride enabling simultaneous boosting charge separation and surface reaction. / Boppella, Ramireddy; Yang, Wooseok; Tan, Jeiwan; Kwon, Hyeok Chan; Park, Jaemin; Moon, Joo Ho.

In: Applied Catalysis B: Environmental, Vol. 242, 01.03.2019, p. 422-430.

Research output: Contribution to journalArticle

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