Cu-based S-scheme photocatalysts DOI Creative Commons
Mahmoud Sayed, Kezhen Qi, Xinhe Wu

et al.

Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

S-scheme heterojunctions have become a hot topic in photocatalysis. Copper (Cu) compounds are versatile family of photocatalytic materials, including oxides (CuO, Cu2O), binary (CuBi2O4, CuFe2O4), sulfides (CuxS, (1 ≤ x 2)), selenides (CuSe), phosphides (Cu3P), metal organic frameworks (MOFs), etc. These materials characterized by narrow bandgaps, large absorption coefficients, and suitable band positions. To further increase the efficiency photoinduced charge separation, Cu-based widely integrated into exploited for hydrogen evolution reaction (HER), CO2 reduction, H2O2 generation, N2 fixation, pollutant degradation. This review comprehensively discusses recent progress heterojunctions, highlights their considerable potential targeted applications sustainable energy conversion, environmental remediation, beyond. The fundamentals transfer, design principles verification tools summarized. Then, describes categorized according to chemical composition, integration applications. In particular, implications transfer mechanism on promoting catalytic activity selected systems analyzed. Finally, current limitations outlooks provided motivate future studies developing novel advanced photocatalysts with high performance studying underlying mechanisms.

Language: Английский

S-scheme heterojunction photocatalysts: Mechanism, challenges and opportunities DOI

Chenhui Wang,

Yuanyuan Zhao,

Chao Cheng

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 521, P. 216177 - 216177

Published: Aug. 29, 2024

Language: Английский

Citations

30
Prolonging Charge Carrier lifetime via Intraband Defect Levels in S‐scheme Heterojunctions for Artificial Photosynthesis DOI
Feiyan Xu, Ying He, Jianjun Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 15, 2024

S-scheme heterostructure photocatalysts, distinguished by unique charge-transfer pathways and exceptional catalytic redox capabilities, have found widespread applications in addressing challenging chemical processes, including the photocatalytic reduction of CO

Language: Английский

Citations

9
Cd Single Atom as an Electron Mediator in an S‐Scheme Heterojunction for Artificial Photosynthesis of H2O2 DOI Creative Commons
Xiaowen Ruan,

Minghua Xu,

Chunsheng Ding

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

Abstract Developing conductor‐mediated S‐scheme heterojunction photocatalysts imitating natural photosynthetic systems emerges as a promising approach to hydrogen peroxide (H 2 O ) production. However, achieving precise coupling between two semiconductors with charge shuttle and modulating the interfacial interactions still remain significant bottleneck. Herein, we propose catalyst architecture Cd single atom mediated formed by interfacing CdS TiO nanoparticles. This exhibits an H production rate high 60.33 µmol g −1 min under UV–vis light irradiation, which is attributed efficient transport at interface of thanks S‐scheme. In‐situ X‐ray photoelectron spectroscopy (XPS) electron spin resonance (ESR) spin‐trapping tests confirm transfer route. Femtosecond transient absorption (fs‐TA) other ex‐situ characterizations further corroborate across interface. work offers new perspective on constructing atoms heterojunctions enhance photocatalytic performance.

Language: Английский

Citations

1
Synthesis of Eco-Friendly Narrow-Band CuAlSe2/Ga2S3/ZnS Quantum Dots for Blue Quantum Dot Light-Emitting Diodes DOI Open Access

Shenghua Yuan,

Liyuan Liu, Xiaofei Dong

et al.

Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 245 - 245

Published: Feb. 19, 2025

Quantum dot light-emitting diodes (QLEDs) based on high-color-purity blue quantum dots (QDs) are crucial for the development of next-generation displays. I-III-VI type QDs have been recognized as eco-friendly luminescent materials QLED applications due to their tunable band gap and high-stable properties. However, efficient blue-emitting remain rare owing high densities intrinsic defects surface defects. Herein, narrow-band blue-emissive CuAlSe2/Ga2S3/ZnS is synthesized via a facile strategy. The resulting exhibit sharp emission peak at 450 nm with full width half maximum (FWHM) 35 nm, achieved by coating double-shell structure Ga2S3 ZnS, which associated near-complete passivation Cu-related (e.g., Cu vacancies) that enhances band-edge emission, accompanied an improvment in photoluminescence yield up 69%. QLEDs fabricated, exhibiting electroluminescence 453 FWHM 39 current efficiency 3.16 cd A−1, external 0.35%. This research paves way high-efficiency QLEDs.

Language: Английский

Citations

1
A novel palladium decorated graphdiyne regulating d band center enhanced the ability of square meter scale and coal chemical wastewater for efficient hydrogen production DOI

Jingzhi Wang,

Mei Li, Youlin Wu

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 359, P. 124488 - 124488

Published: Aug. 8, 2024

Language: Английский

Citations

5
Rapid charge transfer in TiO2/COF S-scheme heterojunction for boosting H2O2 photosynthesis and Rhodamine B degradation DOI Creative Commons
Yanyan Zhao, Yong Zhang, Haiyan Tan

et al.

Journal of Materiomics, Journal Year: 2024, Volume and Issue: unknown, P. 100970 - 100970

Published: Nov. 1, 2024

Language: Английский

Citations

4
Graphene quantum dot modified Bi2MoO6 nanoflower for efficient degradation of BPA under visible light DOI
Xin Wang, Changzhao Chen,

Qishen Wang

et al.

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: unknown, P. 100473 - 100473

Published: Nov. 1, 2024

Language: Английский

Citations

4
Ag-Regulated Interfacial Electron Transfer between TiO2 and MoSx for Enhanced H2O2 Production DOI
Xidong Zhang,

Jiachao Xu,

Haoyu Long

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: unknown, P. 18669 - 18678

Published: Dec. 6, 2024

The electronic configuration mismatch between the TiO2 support and MoSx cocatalyst induces spontaneous free-electron transfer in an unfavorable direction, resulting stronger O2 adsorption on Mo active sites causing limited H2O2 production. Herein, we propose a strategy for directional to produce electron-enriched Mo(4 – δ)+ via introducing Ag mediator into TiO2/MoSx photocatalyst, which aims weaken improving production activity. To achieve this, core–shell Ag@MoSx was ingeniously constructed surface synthesize TiO2/Ag@MoSx photocatalyst. resultant achieves significantly enhanced rate of 16.13 mmol g–1 h–1 with AQY value 8.79%, surpassing TiO2/Ag by 10.0 237.2 times, respectively. Theoretical calculations experimental results reveal that incorporation system can facilitate cocatalyst. This causes creation increase antibonding-orbital occupancy Mo–Oads, ultimately weakening Mo–Oads bond enabling high activity study provides valuable insights optimizing reactant efficient artificial photosynthesis.

Language: Английский

Citations

4
Visual Location of Oxygen Vacancies on Bismuth Titanate Nanosheets with Periodic Quantum Well and Promoting H2O2 Photosynthesis DOI Open Access
Yuqing Gao, Zhen Zhan, Liping Guo

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Oxygen vacancy (OV) defect engineering plays a crucial role in enhancing photocatalytic efficiency. However, the direct visual characterization of oxygen vacancies still remains technically limited. Herein, bismuth titanate (Bi 4 Ti 3 O 12 , BTO‐OV) model photocatalyst containing is constructed through density functional theory (DFT) calculations to reveal influence mechanism distinctive periodic quantum well and on charge transfer behavior BTO. Notably, distribution directly observed using low‐dose integrated differential phase contrast‐scanning transmission electron microscopy (iDPC‐STEM), providing evidence for location these BTO‐OV. Furthermore, theoretical calculation results are verified by characterizing photoelectric properties conducting performance tests hydrogen peroxide (H 2 ) photosynthesis. Specifically, BTO‐OV accelerate separation, leading H photosynthesis efficiency reaching 5278 µ m g −1 h which 5 times that original This work offers experimental references improvement mechanism.

Language: Английский

Citations

0
Construction of Sulfur-Vacancy-Modified 0D/2D S-Scheme Heterojunction for Enhancing Photocatalytic Cr(VI) Reduction DOI
Jie He, Lin Liu,

Ning Fu

et al.

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 566 - 575

Published: Jan. 13, 2025

The rational design and construction of S-scheme heterojunctions represent an effective strategy for enhancing the photocatalytic efficiency. Nevertheless, challenge enabling efficient charge migration at interface persists. Herein, a 0D/2D heterojunction photocatalyst incorporating 0D Ag quantum dots S-vacancy-modified Bi2S3 with 2D MnFe2O4 ultrathin nanosheets (AgQDs/BQDs-SV/MFO) is designed constructed via photoinduced decomposition-defect engineering strategy. Theoretical calculations experimental results demonstrate presence dots, S vacancies, nanosheet structure in AgQDs/BQDs-SV/MFO significantly improves light harvesting, separation, transfer dramatically, resulting high-efficiency degradation rate (99.5%) toward Cr(VI) under visible irradiation (λ ≥ 420 nm) 30 min excellent stability. This work provides new insights constructing photocatalysts purifying Cr wastewater environmental remediation.

Language: Английский

Citations

0