S-Scheme Heterojunction Photocatalysts for H₂O₂ Production

The Journal of Physical Chemistry Letters, Journal Year: 2023, Volume and Issue: 14(20), P. 4803 - 4814

Published: May 16, 2023

Photocatalysis opens a new door to H2O2 formation via low-cost, clean, mild, and sustainable process, which holds great promise for the next generation of massive production. However, fast photogenerated electron–hole recombination slow reaction kinetics are main obstacles its practical application. An effective solution is construct step-scheme (S-scheme) heterojunction, remarkably promotes carrier separation boosts redox power efficient photocatalytic Considering superiority S-scheme heterojunctions, this Perspective summarizes recent advances photocatalysts production, including building H2O2-production performance, mechanisms. Lastly, some prospects given motivate future research in promising field, other strategies provided further improve yields, directions suggested.

Language: Английский

---

Boosting Carrier Separation on a BiOBr/Bi₄O₅Br₂ Direct Z-Scheme Heterojunction for Superior Photocatalytic Nitrogen Fixation

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 5779 - 5787

Published: April 1, 2024

Photocatalytic dinitrogen (N2) fixation is regarded as an achievable technology for ammonia (NH3) production. However, the poor separation efficiency of photoinduced carriers and ineffective N2 activation remain grand obstacles to high-performance NH3 photosynthesis. Designing advanced heterostructured systems accelerate charge activate molecule a feasible strategy optimize photocatalytic activity. Herein, direct Z-scheme configuration established between BiOBr Bi4O5Br2 through facile one-step solvothermal reaction. This enables effective spatial electron–hole pairs preserves robust redox ability carriers, concurrently promoting N≡N bond diminishing energy barrier rate-determining step. The formation BiOBr/Bi4O5Br2 heterojunctions mostly attributed similarities in their lattice structures crystal growth conditions. As result, heterojunction exhibits high yield 66.87 μmol g–1 h–1 without using sacrificing reagents, surpassing that pristine by approximately 3.3 5.6 times, respectively. study provides approach construct implementing under mild

Language: Английский

---

“One stone four birds” design atom co-sharing BiOBr/Bi2S3 S-scheme heterojunction photothermal synergistic enhanced full-spectrum photocatalytic activity

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 344, P. 123601 - 123601

Published: Dec. 19, 2023

Language: Английский

---

Artificial Photosynthetic System with Spatial Dual Reduction Site Enabling Enhanced Solar Hydrogen Production

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(9)

Published: Nov. 28, 2023

Abstract Although S‐scheme artificial photosynthesis shows promise for photocatalytic hydrogen production, traditional methods often overly concentrate on a single reduction site. This limitation results in inadequate redox capability and inefficient charge separation, which hampers the efficiency of evolution reaction. To overcome this limitation, double system is proposed that leverages dual sites, thereby preserving energetic photo‐electrons holes to enhance apparent quantum efficiency. The design features junction consisting CdS nanospheres decorated with anatase TiO 2 nanoparticles coupled graphitic C 3 N 4 . as‐prepared catalyst exhibits rate 26.84 mmol g −1 h an 40.2% at 365 nm. enhanced ascribed efficient separation transport induced by S‐scheme. Both theoretical calculations comprehensive spectroscopy tests (both situ ex situ) affirm across interface. Moreover, substituting reduction‐type other similar sulfides like ZnIn S , ZnS, MoS In further confirms feasibility configuration. findings provide pathway designing more effective photosynthetic systems, opening up fresh perspectives enhancing performance.

Language: Английский

---

2D semiconductor nanosheets for solar photocatalysis

EcoEnergy, Journal Year: 2023, Volume and Issue: 1(2), P. 248 - 295

Published: Dec. 1, 2023

Abstract In the advancing world of graphene, highly anisotropic 2D semiconductor nanosheets, notable for their nanometer‐scale thickness, have emerged as a leading innovation, displaying immense potential in exploration renewable and clean energy production. These garnered significant attention from researchers. The nanosheets are marked by extraordinary electronic, optical, chemical attributes, positioning them attractive foundational components heterogeneous photocatalysts. This review diligently summarizes both seminal work ongoing developments pertaining to application solar within context photocatalysis. We begin detailing distinctive properties concentrating on pivotal roles augmenting photocatalytic efficiency, explaining intrinsic mechanisms that govern migration rate photogenerated carriers material's surface. Subsequently, we delineate methods employed synthesize typical nanosheets. alignment with overarching objective expanding light absorption capacity accelerating charge transfer, also examine current research hybridization techniques involving materials varied dimensions, well deployment diverse applications. conclude identifying promising avenues challenges await further this burgeoning field.

Language: Английский

---

Electronic and energy level structural engineering of graphitic carbon nitride nanotubes with B and S co-doping for photocatalytic hydrogen evolution

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 645, P. 525 - 532

Published: April 27, 2023

Language: Английский

---

Interfacial chemical bond regulating the electronic coupling of ZnIn2S4−x-WO3−x for enhancing the photocatalytic pollutions degradation coupled with hydrogen evolution

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 342, P. 123436 - 123436

Published: Oct. 24, 2023

Language: Английский

---

Visible-light induced tetracycline degradation catalyzed by dual Z-scheme InVO4/CuBi2O4/BiVO4 composites: The roles of oxygen vacancies and interfacial chemical bonds

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 473, P. 145278 - 145278

Published: Aug. 7, 2023

Language: Английский

---

Enhancement of Charge Separation and NIR Light Harvesting through Construction of 2D–2D Bi₄O₅I₂/BiOBr:Yb³⁺, Er³⁺ Z‐Scheme Heterojunctions for Improved Full‐Spectrum Photocatalytic Performance

Advanced Science, Journal Year: 2023, Volume and Issue: 10(13)

Published: Feb. 21, 2023

Developing full-spectrum photocatalysts with simultaneous broadband light absorption, excellent charge separation, and high redox capabilities is becoming increasingly significant. Herein, inspired by the similarities in crystalline structures compositions, a unique 2D-2D Bi

Language: Английский

---

Heterophase structure of ZnSnO3 (rhombohedral and orthorhombic) for efficient dye degradation and N2-to-NH3 conversion via piezocatalysis and piezo-photocatalysis

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155202 - 155202

Published: Aug. 26, 2024

Language: Английский

---