Construction of embedded CdS nanosheets@PEA2PbBr4 nanoplate p-n heterojunction photocatalysts with spatial charge transfer for enhanced benzylic C(sp3)-H bond oxidation

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 480, P. 148099 - 148099

Published: Dec. 17, 2023

Language: Английский

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Defects of Metal Halide Perovskites in Photocatalytic Energy Conversion: Friend or Foe?

Advanced Science, Journal Year: 2024, Volume and Issue: 11(29)

Published: June 3, 2024

Abstract Photocatalytic solar‐to‐fuel conversion over metal halide perovskites (MHPs) has recently attracted much attention, while the roles of defects in MHPs are still under debate. Specifically, mainstream viewpoint is that detrimental to photocatalytic performance, some recent studies show certain types contribute photoactivity enhancement. However, a systematic summary why it contradictory and how affect performance lacking. In this review, innovative MHP photocatalysts highlighted. First, origins elaborated, followed by clarifying benefits including optical absorption, charge dynamics, surface reaction. Afterward, progress on defect‐related photocatalysis, i.e., CO 2 reduction, H generation, pollutant degradation, organic synthesis systematically discussed critically appraised, putting emphasis their beneficial effects. With offering peculiar sets merits demerits, personal opinion ongoing challenges concluded outlining potentially promising opportunities for engineering photocatalysts. This critical review anticipated offer better understanding spur inspiration designing efficient

Language: Английский

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Halide perovskite-based heterostructures for photocatalytic CO2 conversion

Rare Metals, Journal Year: 2024, Volume and Issue: 43(11), P. 5453 - 5472

Published: July 4, 2024

Language: Английский

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Synergistic Electric Metal (Ni SAs)‐Semiconductor (CdS NPs) Interaction for Improved H₂O‐to‐H₂ Conversion Performance under Simulated Sunlight

Solar RRL, Journal Year: 2023, Volume and Issue: 7(10)

Published: March 3, 2023

Single‐atom (SA) cocatalysis has obvious superiority in promoting solar‐to‐chemical energy conversion. However, easy aggregation of SAs is very unfavorable to its catalysis for high surface energy. Herein, a photoreduction procedure adopted immobilize Ni on CdS nanoparticles (NPs) construct the synergistic electric metal–semiconductor interaction (EMSI) highly simulated sunlight‐driven H 2 O‐to‐H (HTH) conversion alkaline condition (pH = 14.0) without any sacrificial agent addition, and nanocatalyst with 1.25‰ carrying capacity (CdS–Ni ) achieves highest HTH rate (8149.71 μmol h −1 g , 13.0‐fold greater that NPs) stable photostability accompanied by 27.60% apparent quantum yield (AQY 400 nm ). Characterizations density functional theory calculations indicate EMSI CdS–Ni greatly improves light absorption promotes orderly bulk‐to‐surface migration photoexcitons, effectively suppressing their recombination kinetics higher photoexciton utilization efficiency. Under conditions, concentration OH − ions react photogenerated holes generate hydroxyl radicals inhibiting oxidation half‐reaction obtaining performance due significantly reduced barriers atomic sites. This study provides an insight improving conventional photocatalyst through non‐noble metallic cocatalysis.

Language: Английский

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Structural Modification Strategies, Interfacial Charge‐Carrier Dynamics, and Solar Energy Conversion Applications of Organic–Inorganic Halide Perovskite Photocatalysts

Small Methods, Journal Year: 2023, Volume and Issue: 8(2)

Published: June 28, 2023

Abstract Over the past few decades, organic–inorganic halide perovskites (OIHPs) as novel photocatalyst materials have attracted intensive attention for an impressive variety of photocatalytic applications due to their excellent photophysical (chemical) properties. Regarding practical application and future commercialization, air–water stability performance OIHPs need be further improved. Accordingly, studying modification strategies interfacial interaction mechanisms is crucial. In this review, current progress in development fundamentals summarized. Furthermore, structural OIHPs, including dimensionality control, heterojunction design, encapsulation techniques, so on enhancement charge‐carrier transfer enlargement long‐term stability, are elucidated. Subsequently, dynamics during process systematically specified classified via diverse electrochemical characterization methods, such time‐resolved photoluminescence measurements, ultrafast transient absorption spectroscopy, impedance spectroscopy photocurrent densities, forth. Eventually, various hydrogen evolution, CO 2 reduction, pollutant degradation, conversion organic matter.

Language: Английский

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Advancements and challenges in g-C₃N₄/ZnIn₂S₄ heterojunction photocatalysts

Journal of Materials Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this review, a comprehensive summation of the heterojunction types, synthesis methodologies, engineering approaches, and potential photocatalytic applications pertaining to g-C 3 N 4 /ZnIn 2 S heterojunctions has been presented in-depth discussed.

Language: Английский

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Surface and Defect Engineering Coupling of Charge Shuttle and Redox Site in Cs₃Bi₂Br₉/g-C₃N₄ for Efficient Photocatalytic C(sp³)–H Bond Activation

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 610 - 619

Published: Jan. 16, 2025

Solar-driven organic synthesis using halide perovskites (HPs) has garnered much attention, but their unsatisfactory conversion efficiency limits further applications. Addressing charge dynamics and redox site issues is a straightforward approach to improving performance. Herein, we report the synergistic separation active modulation in lead-free Cs3Bi2Br9 HP N-vacancy reticular g-C3N4 nanosheet for selective C(sp3)–H bond activation. This regulation exhibits strong interfacial interaction, enabling effective transfer with more sites. Theoretical calculations experimental characterizations detailed enhanced reduced energy barriers surface photoredox reactions. When applied toluene oxidation under simulated solar light, optimized photocatalyst achieves total rate of 6865.3 μmol g–1 h–1 an outstanding benzaldehyde selectivity over 92%, outperforming most reported HP-based photocatalysts. work offers universal strategy developing efficient photocatalysts solar-to-chemical conversion.

Language: Английский

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Bi-Based Metal Halide Perovskites and Their Photocatalytic Properties: A Review

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Language: Английский

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Light‐Driven Low‐Temperature and Near‐Unity Conversion of Ester on a Perovskite Derivative Photothermal Catalyst via Photon‐Bismuth Triggered Hotspot

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

Published: March 3, 2025

Abstract Solar‐driven photothermal chemical transformations are regarded as green processes to reduce energy consumption and expected utilize unique light‐induced activation mechanisms improve reaction kinetics. Halide perovskites their derivatives, due optoelectronic properties compositional flexibility, allowed for the precise regulation of band structures surface electronic states, showing potentials photoactivated catalysts with photo‐thermal synergistic effects. However, catalytic performance halide is still unsatisfied low conversion (<0.2%). Herein, Cs 3 Bi x Sb 2‐ Br 9 designed a novel effective catalyst light‐driven degradation ester under room temperature, achieving near‐unity ≈99% without external heating. Photothermal process shows remarkable enhancementup 796% 200% compared that in single thermocatalysis or photocatalysis. The stable superior cyclic performance, well. Mechanistic studies combined situ characterizations theoretical calculations show photon‐bismuth hotspot synergy photoinduced charge transfer (photochemistry) significantly energy, light‐to‐heat effects (thermochemistry) elevate local bismuth active site promotes C─O bond (surface adsorption), which together contribute excellent solar‐driven efficiency on perovskite derivative.

Language: Английский

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Modulating the adsorption/redox sites and charge separation of NiS co-catalyst assisted NiFe-LDH/FeS heterostructure for photocatalytic CO2 reduction

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162416 - 162416

Published: April 1, 2025

Language: Английский

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