Boosting photocatalytic H2 evolution through interfacial manipulation on a lotus seedpod shaped Cu2O/g-C3N4 p-n heterojunction

Tian, Fengyu; Wu, Xinyao; Liu, Shuai; Gu, Yawei; Lin, Zezhou; Zhang, Honglei; Yan, Xue Min; Liao, Guangfu

doi:10.1039/d2se01634f

Cited by 11 publications

(6 citation statements)

References 54 publications

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“…Typically, a smaller arc radius in the EIS spectra indicates a low photoelectrode charge transfer resistance due to the more effective separation of photogenerated electron–hole pairs and faster interface charge transfer. 16 MCC-0.05/CN presented the smallest semicircular Nyquist arc radius in accordance with the above photoluminescence results (Fig. 3f).…”

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confidence: 90%

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Wang,

Ding,

Zhang

et al. 2024

Chem. Commun.

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confidence: 90%

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Wang,

Ding,

Zhang

et al. 2024

Chem. Commun.

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“…While the former characteristic at around 13° was marked with the (100) plane, known as the repetition of heptazine units in g‐C 3 N 4 , the remaining peak, located at 27.4° represents the interlayer stacking in conjugated systems. [ 25,33 ] The (002) planes of ICN and ACN tend to be recorded at 27.6° instead of 27.4° of the CN sample, indicating the intercalation of metal atoms between layers to reduce the interlayer distances owning to stronger electrostatic attraction of metal and nonmetal elements. [ 24 ] In addition, the presence of ethanol during thermal calcination can cause an increase in the level of doped oxygen into g‐C 3 N 4 , as proved by the data in Table S2, Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Unraveling Precise Locations of Indium Atoms in g‐C₃N₄ for Ameliorating Hydrogen Peroxide Piezo‐Photogeneration

Anh,

Nguyen,

Luu

et al. 2024

Solar RRL

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Increasing active sites in catalysts is of utmost importance for catalytic processes. In this regime, single‐atom dispersing on graphitic carbon nitrides (g‐C3N4) to produce fine chemicals, such as hydrogen peroxide (H2O2), is of current interest due to not only enhancing catalytic performance but also reducing the loading of necessary metals. Hence, we, in this research, engineered g‐C3N4 by atomically dispersing aluminum (Al) or indium (In) sites to provide catalytic active centers via one‐step thermal shock polymerization. The addition of Al and In sites can accelerate the catalytic efficacy owing to the Lewis acid‐base interactions between these metals and oxygen (O2). Under catalytic conditions, the formation of oxygenic radicals would strongly be associated with the enhanced formation of H2O2, confirmed by in‐situ electron paramagnetic resonance (EPR) spectroscopy. Furthermore, the empirical analyses from positron annihilation spectroscopy (PAS) show that In atoms would occupy the near positions of carbon vacancies (VC) to form N‐VC@In‐O bonds. This replacement would produce the highest formation energy based on the density functional theory (DFT) calculations, improving the stability of atom‐dispersive materials. Therefore, via the combination of experimental and theoretical proofs, this study suggests the exact location of In atoms in g‐C3N4 structures, which can help boost the catalytic production of H2O2.This article is protected by copyright. All rights reserved.

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“…In general, in a photocatalytic CO 2 reduction test system, e.g, sacrificial agent, cocatalysts, and photocatalysts should be added to the system together. − In this way, the “overestimation of product yield” issue is neglected. Recently, Zhang and co-workers found a solid evidence of TEOA, a most commonly used sacrificial agent, can also photocatalytic reduction of CO 2 into CO and CH 4 via a hydrogen atom transfer (HAT) process.…”

Section: Challenges In Photocatalytic Co2 Reductionmentioning

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Challenges in Photocatalytic Carbon Dioxide Reduction

Liao,

Ding,

Yang

et al. 2024

Precision Chemistry

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An energy crisis and significant anthropogenic CO2 emissions as a result of rising fossil fuel consumption have caused a rapid increase in global temperature. One of the best solutions to these two issues is thought to be the photocatalytic reduction of CO2 into value-added carbon-containing products. In this aspect, the main challenges mainly include the photocatalytic mechanism, reaction activity, and product selectivity, especially in ambiguous reaction pathways and product selectivity, an unclear charge transfer mechanism, and an overestimate of product yield. Therefore, in this perspective, we attempt to exhibit the discussion and in-depth analysis of the possible reaction pathways and product selectivity, the specific charge transfer mechanism, and the origin of carbon-containing products in phtocatalytic CO2 reduction. Besides, the fundamentals for photocatalytic CO2 reduction are also illustrated. Finally, the state-of-the-art challenges and perspectives in CO2 photoreduction are highlighted and discussed in detail. This perspective is expected to evoke more research attention for the photocatalytic reduction of CO2 into value-added products.

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Boosting photocatalytic H₂ evolution through interfacial manipulation on a lotus seedpod shaped Cu₂O/g-C₃N₄ p-n heterojunction

Abstract: Precisely modulating the interfacial contact of heterojunction photocatalysts and regulating the spatial transfer of photoexcited charge carriers play a significant role in promoting the photocatalytic efficiency. Herein, a novel lotus...

Cited by 11 publications

References 54 publications

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Unraveling Precise Locations of Indium Atoms in g‐C₃N₄ for Ameliorating Hydrogen Peroxide Piezo‐Photogeneration

Challenges in Photocatalytic Carbon Dioxide Reduction

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Boosting photocatalytic H2 evolution through interfacial manipulation on a lotus seedpod shaped Cu2O/g-C3N4 p-n heterojunction

Abstract: Precisely modulating the interfacial contact of heterojunction photocatalysts and regulating the spatial transfer of photoexcited charge carriers play a significant role in promoting the photocatalytic efficiency. Herein, a novel lotus...

Cited by 11 publications

References 54 publications

Critical role of hydrogen bonding between microcrystalline cellulose and g-C3N4 enables highly efficient photocatalysis

Critical role of hydrogen bonding between microcrystalline cellulose and g-C3N4 enables highly efficient photocatalysis

Unraveling Precise Locations of Indium Atoms in g‐C3N4 for Ameliorating Hydrogen Peroxide Piezo‐Photogeneration

Challenges in Photocatalytic Carbon Dioxide Reduction

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Product

Resources

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Boosting photocatalytic H₂ evolution through interfacial manipulation on a lotus seedpod shaped Cu₂O/g-C₃N₄ p-n heterojunction

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Critical role of hydrogen bonding between microcrystalline cellulose and g-C₃N₄ enables highly efficient photocatalysis

Unraveling Precise Locations of Indium Atoms in g‐C₃N₄ for Ameliorating Hydrogen Peroxide Piezo‐Photogeneration