Spin polarized graphene monolayer of van der Waals heterojunction for photocatalytic H2O overall splitting

Yao, Guojian; Yang, Shan; Jiang, Shujuan; Sun, Chuanzhi; Song, Shaoqing

doi:10.1016/j.apcatb.2022.121569

Cited by 17 publications

(8 citation statements)

References 49 publications

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“…4d show that the hydrogen evolution overpotential of MoC@NG-70@CN is lower than that of pure CN, suggesting better hydrogen reduction activity. 8 The dynamics of photogenerated exciton dissociation were determined by photoluminescence (PL) spectroscopy and the time-resolved photoluminescence (TRPL) decay spectrum. 56,57 As shown in Fig.…”

Section: Inuence Factors Of Photocatalytic Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…26 Yao et al revealed that photogenerated electrons and holes in a graphene-based VDW heterojunction migrate from MoS 2 to the relative regions of graphene under the polarization promotion of monolayer graphene, which effectively facilitates the separation of photogenerated charge carriers. 8 Furthermore, the 2D VDW heterojunction Mo 2 C/g-C 3 N 4 achieves extraordinary photocatalytic degradation activity of tetracycline benefiting from ordered in-plane and VDW force-induced interlayer electron transport. 9 g-C 3 N 4 (CN) has been widely used in the field of photocatalytic hydrogen production due to its suitable energy band structure, non-toxicity and simple preparation process.…”

Section: Introductionmentioning

confidence: 99%

“…6 Photocatalytic hydrogen production is an uphill reaction in terms of thermodynamics, requiring 237.2 kJ energy per mole of water to decompose under standard conditions. 7,8 With respect to kinetics, the conduction band of photocatalysts demands an electrochemical potential spanning the water reduction potential. 9 For photocatalysts that meet both of these requirements, e.g., g-C 3 N 4 , 10,11 ZnIn 2 S 4 , [12][13][14] MoS 2 , 15-17 TiO 2 , 18 and so on, the photocatalytic efficiency remains low due to serious recombination of photoinduced electrons and holes.…”

Section: Introductionmentioning

confidence: 99%

“…24,25 2D van der Waals (VDW) heterojunctions are favored for their large specic surface area, excellent stability, and the absence of lattice mismatch and atomic diffusion problems. 8,9,26,27 Additionally, as an intermolecular force, the VDW force can provide a driving force for charge transfer between layers to enhance photocatalytic performance. Recently, Peng et al designed a VDW heterojunction of Mo 2 C/Bi 4 O 5 Br 2 with an interfacial Mo-O bond to realize efficient green energy conversion.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

Tan

Yao

et al. 2023

J. Mater. Chem. A

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Section: Inuence Factors Of Photocatalytic Activitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

Tan

Yao

et al. 2023

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Research Advances in Magnetic Field‐Assisted Photocatalysis

Li,

Qiu,

Cao

et al. 2024

Adv Funct Materials

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Solar‐to‐chemical energy conversion thorugh photocatalytic technology has garnered significant attention due to its potential for clean hydrogen pro duction, pollutant degradation, and carbon dioxide reduction. However, its relatively low solar‐to‐chemical conversion efficiency hinders its industrial development. External fields have currently emerged as a supplementary energy source to augment the overall catalytic efficiency. Recently, the photocatalytic performance has been considerably enhanced through magnetic field modulation, which promotes the separation and transfer of photoexcited charge carriers. This article systematically reviews the recent research progress of magnetic field–assisted photocatalysis, discussing phenomena such as the negative magnetoresistance effect, Lorentz force, and spin polarization. It comprehensively analyzes the effect of magnetic fields on critical processes in photocatalysis: light absorption, charge‐carrier separation, and surface reactions. In particular, this review focuses on the spin‐relaxation mechanism, explains how the electron lifetime is extended through spin polarization, and proposes design strategies for spin‐polarized materials. Finally, this review discusses the challenges and potential opportunities for enhancing photocatalytic efficiency. The ultimate objective of this review is to offer notable theoretical and experimental insights that can guide the design and development of high‐performance photocatalysts and photocatalytic systems.

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Spin Polarization: A New Frontier in Efficient Photocatalysis for Environmental Purification and Energy Conversion

Zhao,

Zhang,

Yue

et al. 2024

ChemPhysChem

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As a promising strategy to improve photocatalytic efficiency, spin polarization has attracted enormous attention in recent years, which could be involved in various steps of photoreaction. The Pauli repulsion principle and the spin selection rule dictate that the behavior of two electrons in a spatial eigenstate is based on their spin states, and this fact opens up a new avenue for manipulating photocatalytic efficiency. In this review, recent advances in modulating the photocatalytic activity with spin polarization are systematically summarized. Fundamental insights into the influence of spin‐polarization effects on photon absorption, carrier separation, and migration, and the behaviors of reaction‐related substances from the photon uptake to reactant desorption are highlighted and discussed in detail, and various photocatalytic applications for environmental purification and energy conversion are presented. This review is expected to deliver a timely overview of the recent developments in spin‐polarization‐modulated photocatalysis for environmental purification and energy conversion in terms of their practical applications.

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Spin polarized graphene monolayer of van der Waals heterojunction for photocatalytic H2O overall splitting

Cited by 17 publications

References 49 publications

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

The 2D van der Waals heterojunction MoC@NG@CN for enhanced photocatalytic hydrogen production

Research Advances in Magnetic Field‐Assisted Photocatalysis

Spin Polarization: A New Frontier in Efficient Photocatalysis for Environmental Purification and Energy Conversion

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