Facile synthesis of difunctional NiV LDH@ZIF-67 p-n junction: Serve as prominent photocatalyst for hydrogen evolution and supercapacitor electrode as well

Wang, Guorong; Li, Yanbing; Xu, Lin; Jin, Zhiliang; Wang, Yanbin

doi:10.1016/j.renene.2020.08.053

Cited by 91 publications

(51 citation statements)

References 66 publications

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“…This indicates that the structure and crystal form of the composite catalyst did not change significantly. This confirms that the composite catalyst x% CPO/MCS (x = 3, 5, 10, and 15) synthesized by the traditional physical stirring method has high stability 41 …”

Section: Resultssupporting

confidence: 66%

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

et al. 2021

Int J Energy Res

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Summary PO43− ions have good conductivity and can provide open channels for rapid ion migration. In contrast, the solid solution Mn0.2Cd0.8S catalyst has been limited for a long time due to its low charge separation efficiency and its tendency to lead to rapid electrons and holes binding. Therefore, on the basis of in‐depth study catalysts of Co3(PO4)2 and Mn0.2Cd0.8S, we successfully synthesized flake‐shaped stacked nano‐flower shaped Co3(PO4)2 and rod‐shaped Mn0.2Cd0.8S. In addition, combined with traditional physical heating and stirring method, Mn0.2Cd0.8S was inserted into the petals of Co3(PO4)2, forming a heterojunction between their contact surfaces to promote photocatalytic hydrogen production. The study found that when the amount of Co3(PO4)2 was 10%, the hydrogen reduction efficiency of the composite catalyst reached was the best, reaching 0.57 mmol (11.4 mmol/h/g) within 5 hours, which was three times that of the single catalyst Mn0.2Cd0.8S. The results show that the formation of heterojunction provides an open channel for rapid charge transfer and reduces the consumption of photo generate carriers. Moreover, the flake‐like accumulation of Co3(PO4)2 provided a 3D reaction space for Mn0.2Cd0.8S, and increased the reaction active sites omaf, the composite catalyst. Therefore, more effective photo‐generated carriers migrate to the surface of Co3(PO4)2 and then participate in the photocatalytic evolution reaction of hydrogen. This study provides a new idea for improving the photocatalytic hydrogen production performance of Mn0.2Cd0.8S catalyst.

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Section: Resultssupporting

confidence: 66%

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

et al. 2021

Int J Energy Res

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“…1 ZIF-67 (a Co-based zeolitic imidazolate framework), with a cubic crystal nanostructure, can be prepared with a metal cobalt ion as the central atom and 2-methylimidazole as the organic ligand under appropriate external conditions. 20 Sundriyal et al 21 prepared nickeldoped ZIF-67 in the presence of rGO, and finally ZIF-67/ rGO generated a composition as an electrode, the specific capacitance of which was 304 F g −1 at a current density of 1 A g −1 . Bimetallic metal oxide materials derived from MOFs possess high stability and conductivity, which provides more active sites and makes them ideal supercapacitor materials.…”

Section: Introductionmentioning

confidence: 99%

Design of ZIF-67 MOF-derived Co₃O₄/NiCo₂O₄ nanosheets for supercapacitor electrode materials

Zhang

Wen

et al. 2021

Journal of Chemical Research

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Binary transition metal oxides exhibit improved properties including good redox potentials and electrical conductivities compared with single metal oxides as electrode materials in energy storage. Herein, ZIF-67 is prepared by a one-step method using Co2+ as the central metal ion, 2-methylimidazole as the organic ligand, and methanol as an organic solvent at room temperature. Hollow NiCo2O4 and sheet-like Co3O4/NiCo2O4 derived from bimetallic imidazolate framework precursors were synthesized by adding cobalt and nickel ions in appropriate proportions. A hollow and porous structure is achieved for the reaction between a nickel salt and ZIF-67, and this unique nanostructure provides a high active surface area, which is beneficial to the electrochemical properties. Several samples are prepared and used as electrode materials for electrochemical tests in 6 M KOH. As a result, the Co3O4/NiCo2O4 electrode with a sheet nanostructure showed a high specific capacitance of 846 F g−1 at a current density of 0.5 A g−1. This Co3O4/NiCo2O4 electrode material is promising for future studies on high-performance supercapacitors to solve emerging energy-related problems. [Formula: see text]

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“…The construction of the p–n heterojunction effectively accelerates the electron–hole separation efficiency in the GDY–CuBr system due to the synergy between the internal electric field and the band arrangement. 76–78 A faster electron–hole separation rate can energize the photocatalytic hydrogen evolution process. Additionally, because of the unique pore structure of GDY, it is easier for the system to adsorb EY molecules on the surface.…”

Section: Resultsmentioning

confidence: 99%

Facile synthesis of difunctional NiV LDH@ZIF-67 p-n junction: Serve as prominent photocatalyst for hydrogen evolution and supercapacitor electrode as well

Cited by 91 publications

References 66 publications

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Design of ZIF-67 MOF-derived Co₃O₄/NiCo₂O₄ nanosheets for supercapacitor electrode materials

Novel CuBr-assisted graphdiyne synthesis strategy and application for efficient photocatalytic hydrogen evolution

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Facile synthesis of difunctional NiV LDH@ZIF-67 p-n junction: Serve as prominent photocatalyst for hydrogen evolution and supercapacitor electrode as well

Cited by 91 publications

References 66 publications

Mn 0. 2 Cd 0 . 8 S modified with 3D flower‐shaped Co 3 ( PO 4 ) 2 for efficient pho

Mn 0. 2 Cd 0 . 8 S modified with 3D flower‐shaped Co 3 ( PO 4 ) 2 for efficient pho

Design of ZIF-67 MOF-derived Co3O4/NiCo2O4 nanosheets for supercapacitor electrode materials

Novel CuBr-assisted graphdiyne synthesis strategy and application for efficient photocatalytic hydrogen evolution

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Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Design of ZIF-67 MOF-derived Co₃O₄/NiCo₂O₄ nanosheets for supercapacitor electrode materials