Nickel phosphonate-derived Ni<sub>2</sub>P@N-doped carbon co-catalyst with built-in electron-bridge for boosting photocatalytic hydrogen evolution

Gao, Li‐Jiao; Song, Xin‐Lian; Ren, Jin‐Tao; Yuan, Zhong‐Yong

doi:10.1039/d2qi00064d

Cited by 14 publications

(10 citation statements)

References 47 publications

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“…Further, XRD and XPS studies are performed on the as-obtained SrTiO 3 –Ni 2 P5 photocatalyst coating after 20 runs in order to find the reason for the drop in the activity after the repeated runs. The results obtained with the present work are compared with other recently reported similar catalyst systems in this area (Table S6), ,,,,,,, and it shows that the developed catalyst system is highly competent in activity for generating hydrogen by solar water splitting. Notably, the retained stability of the SrTiO 3 –Ni 2 P5 coating catalyst nearly up to 15 runs is outstanding compared to the 4 to 5 runs of other recently reported catalysts in their powdered forms.…”

Section: Resultssupporting

confidence: 54%

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation

Meera

Abhirami

Hossain

et al. 2022

ACS Appl. Eng. Mater.

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Ni 2 P has a significant importance in the field of photocatalytic water splitting, irrespective of its narrow band gap (1.0 eV). The photocatalytic performance of bare Ni 2 P is highly limited due to the fast recombination rate of the electron−hole pairs. However, it can be used suitably for tuning the band gap of wide band gap semiconductors. The present study involves the development of an effective heterojunction with tuned band gap by Ni 2 P engineered SrTiO 3 nanocubes in the form of a coating after successful compositional tuning. This is accomplished by an in situ decoration of SrTiO 3 nanocubes at the active sites of Ni 2 P via a chemical reduction method. Morphological and physical features of the developed catalyst are tuned in the coating in order to have Ni 2 P as the major phase for maintaining the physical structure and to impart enhancement in photocatalytic performance and stability to the catalyst system. As the conduction band of SrTiO 3 lies at a more negative potential compared to that of Ni 2 P, the excited electrons from SrTiO 3 can easily be injected to the active sites of Ni 2 P for proton reduction. Thus, in addition to tuning the composite energy band gap, Ni 2 P acts as the reaction center for hydrogen generation and as the stable catalyst bed for SrTiO 3 nanocube decoration. The appearance of SrTiO 3 enriches the electron density at the Ni 2 P active sites, and Ni 2 P with negatively charged phosphorus has the ability to capture more protons at these sites for accelerating the rate of hydrogen generation. The enhancement in the microsurface properties of Ni 2 P in the composite coating are evaluated with OSP technique. The hydrogen generation rate as high as 7.03 mmol/g/h is achieved with the as-engineered catalyst coating, with an apparent quantum yield of 23.72% at 400 nm. The catalyst system shows a sustained hydrogen generation rate even after 15 cycles confirming the suitability of large scale production for industrial applications.

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Section: Resultssupporting

confidence: 54%

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation

Meera

Abhirami

Hossain

et al. 2022

ACS Appl. Eng. Mater.

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Section: Three‐dimension Carbon and Phosphorusmentioning

confidence: 99%

“…The 2D‐Ni 2 P@BP/CN composite structure was explored as the photocatalysts. [ 195 ] Figure 12G shows that it had a remarkable photocatalytic H 2 evolution activity of 0.858 mmol h −1 g −1 under visible light, revealing 50 times and 5 times, respectively, higher than that of in the original CN and Pt/CN sample. At the same time, black phosphorus has strong anisotropy in electrical and thermal conductivity, which can be used as a good thermoelectric material.…”

Section: Three‐dimension Carbon and Phosphorusmentioning

confidence: 99%

Zero to Three Dimension Structure Evolution from Carbon Allotropes to Phosphorus Allotropes

Chen

et al. 2022

Adv Materials Inter

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As the promising and highly‐focused materials after silicon, carbon, and phosphorus promote the development of nanotechnology due to its allotropes with unique structures and properties. The carbon allotropes of 0D fullerene, 1D carbon nanotube, and 2D graphene stimulate the investigation of structures, synthesis, properties, and further applications of carbon nanomaterials. Analogous to carbon, phosphorus is demonstrated to have a rich phase diagram. 0D phosphorus fullerenes, 1D phosphorus nanotubes and fibrous red phosphorus, and recently 2D black phosphorene and violet phosphorene have unique structures analogous to carbon fullerene, carbon nanotube, and graphene, is developed. The photoelectronic properties and further applications of the phosphorus allotropes as semiconductors, energy storage materials, biomaterials, and sensors are also investigated. Great efforts are dedicated to studies of the synthesis, structure, and properties of carbons and phosphorus. However, there is no systematic review of the structure of phosphorus allotropes compared to carbon allotropes. Herein, the structures along with possible future perspective of carbon and phosphorus allotropes review and compare in this work based on the classification of different dimensions.

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“…However, effective charge separation and transfer remain decisive factors for photocatalytic hydrogen evolution activity. Various strategies (defect engineering, [4][5][6][7] morphological design, [8][9][10][11] heteroatom doping, [12][13][14][15] loading co-catalysts, [16][17][18] and construction of heterojunctions [19][20][21] ) have been proposed to overcome this pervasive problem present in photocatalysts. Appropriately designed heterostructures can improve the surface reaction kinetics of the catalytic system and thus significantly increase the carrier separation efficiency.…”

Section: Introductionmentioning

confidence: 99%

Construction of a heterojunction with fast charge transport channels for photocatalytic hydrogen evolutionviaa synergistic strategy of Co-doping and crystal plane modulation

et al. 2023

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Nickel phosphonate-derived Ni₂P@N-doped carbon co-catalyst with built-in electron-bridge for boosting photocatalytic hydrogen evolution

Abstract: To construct photocatalytic systems that can efficiently convert solar energy to hydrogen energy, numerous studies have been focused on transition metal phosphides (TMPs) co-catalysts, which display low overpotential and cost...

Cited by 14 publications

References 47 publications

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation

Zero to Three Dimension Structure Evolution from Carbon Allotropes to Phosphorus Allotropes

Construction of a heterojunction with fast charge transport channels for photocatalytic hydrogen evolutionviaa synergistic strategy of Co-doping and crystal plane modulation

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Nickel phosphonate-derived Ni2P@N-doped carbon co-catalyst with built-in electron-bridge for boosting photocatalytic hydrogen evolution

Abstract: To construct photocatalytic systems that can efficiently convert solar energy to hydrogen energy, numerous studies have been focused on transition metal phosphides (TMPs) co-catalysts, which display low overpotential and cost...

Cited by 14 publications

References 47 publications

Development of Sustainable Catalyst Coating of Ni2P Engineered SrTiO3 Nanocubes for Hydrogen Generation

Development of Sustainable Catalyst Coating of Ni2P Engineered SrTiO3 Nanocubes for Hydrogen Generation

Zero to Three Dimension Structure Evolution from Carbon Allotropes to Phosphorus Allotropes

Construction of a heterojunction with fast charge transport channels for photocatalytic hydrogen evolutionviaa synergistic strategy of Co-doping and crystal plane modulation

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Nickel phosphonate-derived Ni₂P@N-doped carbon co-catalyst with built-in electron-bridge for boosting photocatalytic hydrogen evolution

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation

Development of Sustainable Catalyst Coating of Ni₂P Engineered SrTiO₃ Nanocubes for Hydrogen Generation