A review on recent advances in the design and structure-activity correlation of TiO2-based photocatalysts for solar hydrogen production

Energy Advances, Год журнала: 2024, Номер 3(7), С. 1472 - 1504

Опубликована: Янв. 1, 2024

The recent progress in visible light driven photocatalysis by describing the integration of TiO 2 with variety materials, and how it helps tailoring electronic, structural optical properties towards improved solar H production activity.

Язык: Английский

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Boosting the Quantum Efficiency of Ionic Carbon Nitrides in Photocatalytic H₂O₂ Evolution via Controllable n → π* Electronic Transition Activation

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Окт. 17, 2024

Abstract Hydrogen peroxide (H 2 O ) is a crucial chemical used in numerous industrial applications, yet its manufacturing relies on the energy‐demanding anthraquinone process. Solar‐driven synthesis of H gaining traction as promising research area, providing sustainable method for production. Herein, controllable activation n → π* electronic transition presented to boost photocatalytic evolution ionic carbon nitrides. This enhancement achieved through simultaneous introduction structural distortions and defect sites (─C ≡ N groups vacancies) into KPHI framework. The optimal catalyst ( 2%Ox‐ KPHI) reached an apparent quantum yield 41% at 410 nm without need any cocatalysts, outperforming most previously reported nitride‐based photocatalysts. Extensive experimental characterizations theoretical calculations confirm that corrugated configuration presence defects significantly broaden light absorption profile, improve carrier separation migration, promote adsorption, lower energy barriers desorption. Transient spectroscopy indicates enhanced performance 2%Ox ‐KPHI largely attributed preferential migration electrons over extended timescales, following diffusion geminate carriers across PHI sheets.

Язык: Английский

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Engineering Polyheptazine and Polytriazine Imides for Photocatalysis

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(49)

Опубликована: Авг. 27, 2024

Abstract As organic semiconductor materials gain increasing prominence in the realm of photocatalysis, two carbon‐nitrogen materials, poly (heptazine imide) (PHI) and (triazine (PTI), have garnered extensive attention applications owing to their unique structure properties. This review elaborates on distinctive physical chemical features PHI PTI, emphasizing formation mechanisms ensuing Furthermore, it elucidates intricate correlation between energy band structures various photocatalytic reactions. Additionally, outlines primary synthetic strategies for constructing along with characterization techniques identification. It also summarizes enhancing performance whose advantages are discussed. Finally, highlights promising prospects challenges PTI as photocatalysts.

Язык: Английский

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Harnessing S-scheme junctions for enhanced CO2 photoreduction: molecular bonding of copper(II) complexes onto K-doped polymeric carbon nitride via microwave heating

Rare Metals, Год журнала: 2024, Номер unknown

Опубликована: Сен. 20, 2024

Язык: Английский

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In-situ construction of tubular core–shell noble-metal-free CMT@TiO2/ZnIn2S4 S-scheme heterojunction for superior photothermal-photocatalytic hydrogen evolution

Rare Metals, Год журнала: 2025, Номер unknown

Опубликована: Янв. 18, 2025

Язык: Английский

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Electrochemical Synthesis of High-Efficiency Water Electrolysis Catalysts

Electrochemical Energy Reviews, Год журнала: 2025, Номер 8(1)

Опубликована: Фев. 6, 2025

Язык: Английский

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Spatially Separated Redox Cocatalysts on Poly Triazine Imides Boosting Photocatalytic Overall Water Splitting

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 28, 2025

Abstract Poly (triazine imide) (PTI), a crystalline allotrope of polymeric carbon nitride, holds great promise for photocatalytic overall water splitting (OWS). However, previous results reveal that both H 2 and O evolution cocatalysts prefer to deposit on the prismatic facets, which in undesired backward reaction current unsatisfied quantum efficiency OWS reaction. Herein, situ decoration with heptazine based nitride (HCN) at interface PTI is successfully employed construct S‐scheme hetero‐phase junctions. The built‐in electric field HCN endows directed carrier separation, thereby enabling separation redox sites, as validated by theoretical experimental results. Accordingly, as‐synthesized PTI/HCN spatially separated charge carriers restrained achieves solar‐to‐hydrogen energy conversion 0.35%

Язык: Английский

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In-situ ionothermal synthesis of amorphous poly (heptazine imide) for the photoredox conversion of water

Applied Catalysis A General, Год журнала: 2025, Номер unknown, С. 120304 - 120304

Опубликована: Апрель 1, 2025

Язык: Английский

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Prompt Charge Separation at Crystalline–Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution

ACS Applied Energy Materials, Год журнала: 2024, Номер 7(15), С. 6090 - 6095

Опубликована: Июль 17, 2024

Язык: Английский

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Synergistic Effect of TP-Ru Complex with Optimized Ru-NP–Loaded Exfoliated g-C₃N₄ for Photocatalytic Green Hydrogen Production

Energy & Fuels, Год журнала: 2024, Номер 38(15), С. 14588 - 14603

Опубликована: Июль 24, 2024

Engineering semiconductors with sensitizers and metals is a recognized strategy for enhancing solar-driven photocatalytic hydrogen production. This study delves into the synergistic impact of utilizing exfoliated g-C3N4 (EC3N4) loaded ruthenium metal (Ru) sensitized triphenylphosphine (TP-Ru) complex to elevate H2 evolution. By altering morphology exfoliate nanosheets, 1.30-fold increase in production was achieved, attributed defect formation, facilitating higher charge separation efficiency. Bimetallic Ru TP-Ru–based cocatalysts exhibit distinct efficiencies, functioning as polymer charge-trapping agents, respectively. Sensitizing EC3N4 TP-Ru resulted enhanced visible light absorbance, leading significantly Notably, performance 1.88-fold than that complex, owing efficient carriers by Ru. The highest 2562.5 μmol g–1 h–1 achieved when bimetallic Ru/TP-Ru attached EC3N4, surpassing 3% Ru/EC3N4, TP-Ru/EC3N4, samples factors 1.62, 3.04, 38.68, 48.81, optimized Ru/TP-Ru/EC3N4 composite also reveals quantum yield 3.745% continuous multiple cycles. effectively traps electrons, while maximizes absorbance efficiency addition separation. interplay enhances nanotexture under solar energy. innovative approach presents promising pathway constructing highly composites light–driven evolution holds potential various energy applications.

Язык: Английский

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