Electrostatic self-assembly of 2D/2D CoWO4/g-C3N4 p—n heterojunction for improved photocatalytic hydrogen evolution: Built-in electric field modulated charge separation and mechanism unveiling

Wang, Haiyang; Niu, Ranran; Liu, Jianhui; Guo, Sheng; Yang, Yongpeng; Liu, Zhongyi; Li, Jun

doi:10.1007/s12274-022-4329-z

Cited by 71 publications

(35 citation statements)

References 48 publications

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“…[104] In general, the role of the IEF is to promote the photogenerated carriers separation. [105] Many 2D/2D heterojunction catalysts, such as O-CN/B-rGO, [84] Bi 2 O 2 CO 3 /BiOBr, [105] CoWO 4 /CN, [106] MoS 2 /ZnIn 2 S 4 , [107] and MoS 2 /CaIn 2 S 4 composites, [108] exhibit excellent photocatalytic performance by forming p-n heterojunctions. Wang et al [106] [93] Copyright 2017, American Chemical Society.…”

Section: Charge Transfer Mechanismmentioning

confidence: 99%

“…[105] Many 2D/2D heterojunction catalysts, such as O-CN/B-rGO, [84] Bi 2 O 2 CO 3 /BiOBr, [105] CoWO 4 /CN, [106] MoS 2 /ZnIn 2 S 4 , [107] and MoS 2 /CaIn 2 S 4 composites, [108] exhibit excellent photocatalytic performance by forming p-n heterojunctions. Wang et al [106] [93] Copyright 2017, American Chemical Society. c) Type II.…”

Section: Charge Transfer Mechanismmentioning

confidence: 99%

“…2D/2D heterojunctions can also accelerate charge transfer and separation by generating an IEF to induce charge directional movement. [106,161,209,220,221] For example, Li et al [209] Reproduced with permission. [205] Copyright 2012, American Chemical Society.…”

Section: Accelerating Charge Transfer and Separationmentioning

confidence: 99%

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Interface Engineering in 2D/2D Heterogeneous Photocatalysts

Meng

Zhang

et al. 2022

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reduction to energy-efficient fuels, [6][7][8] N 2 fixation to ammonia, [9] ammonia treatment, [10,11] and pollutants elimination. [12][13][14][15] Generally, photocatalysis is greatly affected by the composition, crystal structure, and electronic structure of photocatalysts. [16] Recently, 2D nanostructured photocatalysts have evoked interdisciplinary research interest because of their atomiclevel thickness, large specific surface area, excellent flexibility, unique physicochemical and electronic properties.

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Section: Charge Transfer Mechanismmentioning

confidence: 99%

Section: Charge Transfer Mechanismmentioning

confidence: 99%

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Interface Engineering in 2D/2D Heterogeneous Photocatalysts

Meng

Zhang

et al. 2022

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“…The strategies to fabricate the 2D-2D g-C 3 N 4 -based heterostructured photocatalysts Interfaces play a crucial role in the photocatalytic performance of the 2D photocatalysts, as the quality of the interface is determined by the construction strategy. To date, numerous effective fabrication techniques for the synthesis of 2D-2D g-C 3 N 4 -based heterostructure photocatalysts, such as ultrasonic absorption Ayodhya and Veerabhadram, 2020), hydrothermal method (Tian et al, 2013), electrostatic self-assembly (Ma et al, 2017;Wang et al, 2022), and chemical vapor deposition (Zhang and Fu, 2018), have been extensively studied. Nonetheless, one of the simplest ways to construct the 2D-2D g-C 3 N 4 -based heterostructure is to disperse the two distinct 2D components in the solution via stirring or sonication to form a mixture.…”

Section: Preparation Of 2d G-c 3 N 4 -Based Heterostructure Photocata...mentioning

confidence: 99%

“…Additionally, electrostatic selfassembly is a viable technique for fabricating intimate 2D-2D interfaces. Notably, surface charge modification plays a significant role in the engineering of 2D-2D photocatalysts with intimate interfacial contact using this method (Ma et al, 2017;Wang et al, 2022). To achieve electrostatic self-assembly, the surface charges on various 2D photocatalysts must be modified to obtain opposing charges (i.e., positive and negative charges).…”

Section: Preparation Of 2d G-c 3 N 4 -Based Heterostructure Photocata...mentioning

confidence: 99%

2D–2D heterostructure g-C3N4-based materials for photocatalytic H2 evolution: Progress and perspectives

et al. 2022

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Photocatalytic hydrogen generation from direct water splitting is recognized as a progressive and renewable energy producer. The secret to understanding this phenomenon is discovering an efficient photocatalyst that preferably uses sunlight energy. Two-dimensional (2D) graphitic carbon nitride (g-C3N4)-based materials are promising for photocatalytic water splitting due to special characteristics such as appropriate band gap, visible light active, ultra-high specific surface area, and abundantly exposed active sites. However, the inadequate photocatalytic activity of pure 2D layered g-C3N4-based materials is a massive challenge due to the quick recombination between photogenerated holes and electrons. Creating 2D heterogeneous photocatalysts is a cost-effective strategy for clean and renewable hydrogen production on a larger scale. The 2D g-C3N4-based heterostructure with the combined merits of each 2D component, which facilitate the rapid charge separation through the heterojunction effect on photocatalyst, has been evidenced to be very effective in enhancing the photocatalytic performance. To further improve the photocatalytic efficiency, the development of novel 2D g-C3N4-based heterostructure photocatalysts is critical. This mini-review covers the fundamental concepts, recent advancements, and applications in photocatalytic hydrogen production. Furthermore, the challenges and perspectives on 2D g-C3N4-based heterostructure photocatalysts demonstrate the future direction toward sustainability.

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Unlocking the Charge‐Migration Mechanism in S‐Scheme Junction for Photoreduction of Diluted CO₂ with High Selectivity

Wang,

Cheng,

Hou

et al. 2023

Adv Funct Materials

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The rational design of an S‐scheme heterojunctions in hybrid semiconductors to realize separated charge carriers and sufficient redox ability is considered as an attractive way to achieve high photocatalytic activity in diluted CO2 reduction (DCR). An S‐scheme heterojunction formed in the fibrous Ta2O5/Ag2S nanostructures is proposed for improving the photocatalytic performance in DCR under simulated solar irradiation. Benchmark CH4 production rates of 132.3 µmol g−1 are obtained with 93.1% selectivity over optimal catalyst ASTO‐2. The remarkable activity in photocatalytic DCR of Ta2O5/Ag2S is attributed to the unique 0D/1D structure and effective charge separation by the photoinduced strong internal electric field and S‐scheme mechanism. The measurements of in situ X‐ray photoelectron spectroscopy, femtosecond transient absorption spectroscopy, and electron paramagnetic resonance further confirm the photoinduced carrier transfer pathways following the S‐scheme mechanism. This research can provide a new strategy for designing the S‐scheme heterojunctions to improve the photocatalytic performance of diluted CO2 conversion.

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Electrostatic self-assembly of 2D/2D CoWO4/g-C3N4 p—n heterojunction for improved photocatalytic hydrogen evolution: Built-in electric field modulated charge separation and mechanism unveiling

Cited by 71 publications

References 48 publications

Interface Engineering in 2D/2D Heterogeneous Photocatalysts

Interface Engineering in 2D/2D Heterogeneous Photocatalysts

2D–2D heterostructure g-C3N4-based materials for photocatalytic H2 evolution: Progress and perspectives

Unlocking the Charge‐Migration Mechanism in S‐Scheme Junction for Photoreduction of Diluted CO₂ with High Selectivity

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Electrostatic self-assembly of 2D/2D CoWO4/g-C3N4 p—n heterojunction for improved photocatalytic hydrogen evolution: Built-in electric field modulated charge separation and mechanism unveiling

Cited by 71 publications

References 48 publications

Interface Engineering in 2D/2D Heterogeneous Photocatalysts

Interface Engineering in 2D/2D Heterogeneous Photocatalysts

2D–2D heterostructure g-C3N4-based materials for photocatalytic H2 evolution: Progress and perspectives

Unlocking the Charge‐Migration Mechanism in S‐Scheme Junction for Photoreduction of Diluted CO2 with High Selectivity

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Product

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Unlocking the Charge‐Migration Mechanism in S‐Scheme Junction for Photoreduction of Diluted CO₂ with High Selectivity