Construction of 2D S‐Scheme Heterojunction Photocatalyst

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(8)

Published: Nov. 22, 2023

Abstract Semiconductor photocatalytic technology holds immense promise for converting sustainable solar energy into chemically storable energy, with significant applications in the realms of and environment. However, inherent issue rapid recombination photogenerated electrons holes hinders performance single photocatalysts. To overcome this challenge, construction 2D S‐scheme heterojunction photocatalysts emerges as an effective strategy. The deliberate design dimensionality ensures a substantial interfacial area; while, charge transfer mechanism facilitates efficient separation maximizes redox capabilities. This review commences fresh perspective on heterojunctions, followed by comprehensive exploration preparation methods characterization techniques. Subsequently, recent advancements are summarized. Notably, behind activity enhancement is elucidated. Finally, prospects development presented.

Language: Английский

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A review of updated S-scheme heterojunction photocatalysts

Journal of Material Science and Technology, Journal Year: 2023, Volume and Issue: 177, P. 142 - 180

Published: Sept. 26, 2023

Language: Английский

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Chemically bonded BiVO4/Bi19Cl3S27 heterojunction with fast hole extraction dynamics for continuous CO2 photoreduction

Advanced Powder Materials, Journal Year: 2023, Volume and Issue: 3(1), P. 100140 - 100140

Published: June 5, 2023

Surface charge localization and inferior transfer efficiency seriously restrict the supply of reactive hydrogen reaction dynamics CO2 photoreduction performance photocatalysts. Herein, chemically bonded BiVO4/Bi19Cl3S27 (BVO/BCS) S-scheme heterojunction with a strong internal electric field is designed. Experimental density function theory calculation results confirm that elaborated accelerates vectorial migration photogenerated charges from BiVO4 to Bi19Cl3S27 via interfacial chemical bonding interactions (i.e., Bi-O Bi-S bonds) between Bi atoms BVO S BCS or O under light irradiation, breaking barrier surface Bi19Cl3S27, further decreasing energy generation, absorption activation. The separation carriers much more efficient counterpart individual in BVO/BCS system. As result, exhibits significantly improved continuous photocatalytic for reduction 24 h CO yield reaches 678.27 μmol·g−1. This work provides an atomic-level insight into kinetics mechanism heterojunction.

Language: Английский

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A Review of Phosphorus Structures as CO₂ Reduction Photocatalysts

Small, Journal Year: 2023, Volume and Issue: 19(19)

Published: Feb. 12, 2023

Effective photocatalytic carbon dioxide (CO2 ) reduction into high-value-added chemicals is promising to mitigate current energy crisis and global warming issues. Finding effective photocatalysts crucial for CO2 reduction. Currently, metal-based semiconductors have been well reviewed, while review of nonmetal-based almost limited nitrides. Phosphorus a nonmetal with various allotropes tunable band gaps, which has demonstrated be non-metallic photocatalysts. However, no systematic about phosphorus structures reactions reported. Herein, the progresses as are reviewed. The fundamentals reduction, corresponding properties allotropes, doping or phosphorus-containing ligands, research progress reviewed in this paper. future perspective also presented.

Language: Английский

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Metallic AgInS2 nanocrystals with sulfur vacancies boost atmospheric CO2 photoreduction under near-infrared light illumination

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 332, P. 122763 - 122763

Published: April 12, 2023

Language: Английский

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Isolated Cu Sites in CdS Hollow Nanocubes with Doping-Location-Dependent Performance for Photocatalytic CO₂ Reduction

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(3), P. 1468 - 1479

Published: Jan. 13, 2024

Doping engineering has enabled the construction of homogeneous and abundant atomic-level catalytic sites for photocatalytic CO2 reduction with improved selectivity target product. However, little is known about effect spatial position heteroatoms on activity semiconductors toward reduction. Herein, uniform Cu doping into bulk phase hollow CdS cubes (HCC) onto surface HCC, denoted as Cu/HCC HCC@Cu, respectively, are prepared by tuning introduction order sources. Experimental analysis shows that both methods can promote separation migration photoinduced charge carriers in CdS. Notably, HCC@Cu leads to much better proton H2 production performance but lower efficiency compared bare In sharp contrast, enhances CO2-to-CO conversion while mitigating evolution. This should be ascribed smaller overpotential saturated system than Ar system. addition, atoms shifts d band center upward near Fermi energy level, which promotes adsorption activation These results indicate photoelectrons a prolonged lifetime preferably reduce molecules rather protons. The density functional theory (DFT) calculation show desorption CO*, adaptable sulfur vacancies (Vs) produced situ techniques stimulate formation CO* intermediates, resulting high CO. work reveals different heteroatom locations will provide reference design efficient photocatalysts fine structure.

Language: Английский

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Single-step growth of p-type 1D Se/2D GeSe_xO_y heterostructures for optoelectronic NO₂ gas sensing at room temperature

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(12), P. 6361 - 6374

Published: Jan. 1, 2023

One-dimensional (1D)/two-dimensional (2D) heterostructures offer attractive opportunities for developing high-performance gas sensors.

Language: Английский

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Investigating S-scheme charge transfer pathways in NiS@Ta2O5 hybrid nanofibers for photocatalytic CO2 conversion

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2023, Volume and Issue: 51, P. 193 - 203

Published: Aug. 1, 2023

Language: Английский

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Assisting Bi2Sn2O7 nanoparticles with nitrogen-doped porous carbon spheres as bifunctional support for highly-efficient photocatalytic CO2 reduction

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131439 - 131439

Published: Jan. 1, 2025

Language: Английский

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Identification of the Active Sites on Metallic MoO_2−xNano‐Sea‐Urchin for Atmospheric CO₂Photoreduction Under UV, Visible, and Near‐Infrared Light Illumination

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 62(6)

Published: Nov. 2, 2022

We report an oxygen vacancy (Vo )-rich metallic MoO2-x nano-sea-urchin with partially occupied band, which exhibits super CO2 (even directly from the air) photoreduction performance under UV, visible and near-infrared (NIR) light illumination. The Vo -rich displays a CH4 evolution rate of 12.2 5.8 μmol gcatalyst-1 h-1 full spectrum NIR illumination in concentrated , is ca. 7- 10-fold higher than -poor respectively. More interestingly, as-developed can even reduce air CO 6.5 Experiments together theoretical calculations demonstrate that facilitate adsorption/activation to generate *COOH as well subsequent protonation *CO towards formation because highly stable Mo-C-O-Mo intermediate.

Language: Английский

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