Recent advances in semiconductor heterojunctions: a detailed review of the fundamentals of photocatalysis, charge transfer mechanism and materials

RSC Applied Interfaces, Journal Year: 2023, Volume and Issue: 1(1), P. 43 - 69

Published: Sept. 27, 2023

Semiconductor heterojunctions are pivotal in determining the overall photocatalytic efficiency. This review explores recent advances diverse heterojunction types, charge transfer mechanisms and materials.

Language: Английский

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Photoredox‐Promoted Co‐Production of Dihydroisoquinoline and H₂O₂ over Defective Zn₃In₂S₆

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(10)

Published: Jan. 5, 2023

One of the most sustainable and promising approaches for hydrogen peroxide (H2 O2 ) production in a low-cost environment-friendly way is photosynthesis, which, however, suffers from poor carrier utilization low H2 productivity. The addition proton donors such as isopropanol or ethanol can increase production, unfortunately, will inevitably elevate entire cost while wasting oxidizing power holes (h+ ). Herein, tetrahydroisoquinolines (THIQs) employed distinctive donor thermodynamically feasible selective semi-dehydrogenation reaction to highly valuable dihydroisoquinolines (DHIQs), meanwhile, couple with promote generation one photoredox under photocatalysis by dual-functional Zn3 In2 S6 photocatalyst. Surprisingly, suitably defective offers an excellent near-stoichiometric co-production performance DHIQs at unprecedentedly high rates 66.4 62.1 mmol h-1 g-1 visible light (λ ≥ 400 nm), respectively, which outperforms all previously available reports even though sacrificial agents were those reports. Additionally, photocatalytic redox mechanism demonstrates that be generated through multiple pathways, highlighting synergistic effect among ROS (·O2- 1 ), h+ donor, has been ignored previous studies.

Language: Английский

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Boosting photocatalytic activity of CdLa2S4/ZnIn2S4 S-scheme heterojunctions with spatial separation of photoexcited carries

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 144240 - 144240

Published: June 20, 2023

Language: Английский

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Review on S-Scheme Heterojunctions for Photocatalytic Hydrogen Evolution

Acta Physico-Chimica Sinica, Journal Year: 2023, Volume and Issue: 0(0), P. 2212016 - 2212016

Published: Jan. 1, 2023

Abstract:

Language: Английский

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Visible-light-response 2D/2D Bi2Fe4O9/ZnIn2S4 van der Waals S-scheme heterojunction with efficient photocatalysis-self-Fenton degradation of antibiotics

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 58, P. 104803 - 104803

Published: Jan. 17, 2024

Language: Английский

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Fabrication of an Organic/Inorganic Hybrid TpPa-1-COF/ZnIn₂S₄ S-Scheme Heterojunction for Boosted Photocatalytic Hydrogen Production

ACS Applied Energy Materials, Journal Year: 2023, Volume and Issue: 6(2), P. 1103 - 1115

Published: Jan. 6, 2023

Covalent organic frameworks (COFs) exhibit significant prospects in photocatalytic H2 evolution because of their periodic pore structure, large surface area, and outstanding chemical stability. Nevertheless, a bare COF always suffers from poor photogenerated charge separation efficiency. Hence, it is crucial to design highly effective COF-based heterojunction photocatalysts. In this work, we have successfully prepared an organic/inorganic hybrid TpPa-1-COF/ZnIn2S4 (ZIS) with well-matched S-scheme interfacial charge-transfer channels. The results demonstrate that COF/ZIS-20% has optimal rate, which can reach 853 μmol g–1 h–1 the absence any cocatalyst, 6.2 times TpPa-1-COF when exposed visible light. Moreover, apparent quantum efficiency (AQE) at 420 nm up 2.08%. Density functional theory (DFT) calculations demonstrated presence transfers ZnIn2S4 spontaneously formation electric field area COF/ZIS under ground-state condition. Furthermore, creation tuned built-in drives directional transfer, while electron high reduction, thus synergistically promoting evolution, been by experiments theoretical calculation results. This work provides advanced method for preparation high-efficiency photocatalysts based on matching band structures.

Language: Английский

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Construction of ZnIn₂S₄/CdS/PdS S‐Scheme Heterostructure for Efficient Photocatalytic H₂ Production

Small, Journal Year: 2023, Volume and Issue: 19(27)

Published: March 25, 2023

It is facing a tremendous challenge to develop the desirable hybrids for photocatalytic H2 generation by integrating advantages of single semiconductor. Herein, an all-sulfide ZnIn2 S4 /CdS/PdS heterojunction constructed first time, where CdS and PdS nanoparticles anchor in spaces micro-flowers due confinement effects. The morphology engineering can guarantee rapid charge transfer owing short carrier migration distances luxuriant reactive sites provided . S-scheme mechanism between assisted cocatalyst testified situ irradiated X-ray photoelectron spectroscopy electron paramagnetic resonance (EPR), electrons holes move reverse driven work function difference built-in electric field at interfaces. optimal performs glaring activity 191.9 µmol h-1 (10 mg catalyst), largest AQE (apparent quantum efficiency) reach high value 26.26%. This may afford progressive tactics design multifunctional photocatalysts.

Language: Английский

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Construction of Z-scheme CoFe2O4@ZnIn2S4 p-n heterojunction for enhanced photocatalytic hydrogen production

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 328, P. 125059 - 125059

Published: Sept. 17, 2023

Language: Английский

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Multishelled hollow CaTiO3 cubes decorated with Co0.2Cd0.8S nanoparticles for efficient photocatalytic H2 evolution via S-scheme charge transfer

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 345, P. 127429 - 127429

Published: April 9, 2024

Language: Английский

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Rationally designed CaTiO3/Mn0.5Cd0.5S/Ni3C S-scheme/Schottky integrated heterojunction for efficient photocatalytic H2 evolution

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 677, P. 365 - 376

Published: Aug. 12, 2024

Language: Английский

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