Construction of Interfacial Electric Field via Dual‐Porphyrin Heterostructure Boosting Photocatalytic Hydrogen Evolution

Advanced Materials, Год журнала: 2021, Номер 34(3)

Опубликована: Ноя. 5, 2021

A dual-porphyrin heterostructure is successfully constructed by coupling tetrakis (4-carboxyphenyl) zinc porphyrin (ZnTCPP) with (4-hydroxyphenyl) (THPP). The high photocatalytic H2 evolution rate of 41.4 mmol h-1 g-1 obtained for ZnTCPP/THPP under full spectrum, which ≈5.1 and ≈17.0 times higher than that pure ZnTCPP THPP, respectively. significantly enhanced activity mainly attributed to the giant interfacial electric field formed between dual porphyrins, greatly facilitates efficient charge separation transfer. Meanwhile, similar conjugated structures porphyrins also provide proper interface match decrease defects, thus inhibiting recombination photoproduced carriers. By rationally combining appropriate band high-quality contact this work provides a fresh insight into construction improve performance.

Язык: Английский

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Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Advanced Functional Materials, Год журнала: 2021, Номер 32(12)

Опубликована: Ноя. 25, 2021

Abstract Energy‐related problems induced by ever‐continuous fossil consumption have arisen as one of the most challenging issues in 21 st century, imposing urgent demands on advanced materials to achieve high energy utilization and a sustainable society. In various solar solar‐to‐fuel conversion processes, charge carriers are main inevitable participators, dynamics related their generation, migration, separation, is key advance material design for settling above issues. Internal electric field (IEF), also named built‐in field, could guide directional migration carriers, achieving effective utilization, prolonged lifetimes. This critical review begins with discussion modulation strategies toward IEF together in‐detail elucidated mechanisms its formation. Some cascade systems telling conclusive role from intrinsic strategy discussed. Then, summary state‐of‐the‐art advances characterization means both quantitative qualitative perspectives provided. Finally presented modulations several specific energy‐related applications concerning cell, photocatalysis, photodetectors, batteries better understand superiority well‐performed design, followed future development opportunities design.

Язык: Английский

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Electron Donor–Acceptor Interface of TPPS/PDI Boosting Charge Transfer for Efficient Photocatalytic Hydrogen Evolution

Advanced Science, Год журнала: 2022, Номер 9(17)

Опубликована: Апрель 11, 2022

Charge separation efficiency of photocatalysts is still the key scientific issue for solar-to-chemical energy conversion. In this work, an electron donor-acceptor (D-A) interface with high charge between TPPS (tetra(4-sulfonatophenyl)porphyrin) and PDI (perylene diimide) successfully constructed boosting photocatalytic H

Язык: Английский

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A redox-active perylene-anthraquinone donor-acceptor conjugated microporous polymer with an unusual electron delocalization channel for photocatalytic reduction of uranium (VI) in strongly acidic solution

Applied Catalysis B Environment and Energy, Год журнала: 2022, Номер 314, С. 121467 - 121467

Опубликована: Май 3, 2022

Язык: Английский

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Enabling Internal Electric Fields to Enhance Energy and Environmental Catalysis

Advanced Energy Materials, Год журнала: 2023, Номер 13(11)

Опубликована: Янв. 29, 2023

Abstract Recent years have witnessed an upsurge of interest in exploiting advanced photo‐/electrocatalysts for efficient energy conversion and environmental remediation. Constructing internal electric fields has been highlighted as a rising star to help facilitate various catalytic processes, with the merits promoting charge transfer/separation, optimizing redox potential creating effective active/adsorption sites. Internal are usually formed by polarization uneven distributions between different constituent layers, which widely exist piezoelectrics, polar surface terminations, heterostructure materials. Herein, groundbreaking interdisciplinary overview latest advances construction improve photo(electro)catalytic electrocatalytic activity is provided. This critical review begins encyclopedic summary classification, advantages, synthesis strategies fields. Subsequently, identification methods thoroughly discussed based on characterization techniques, experiments, theoretical calculations, can provide profound guidance in‐depth study To elaborate theory–structure–activity relationships fields, corresponding reaction mechanisms, modification strategies, performance jointly discussed, along discussion their practical applications. Finally, insightful analysis challenges future prospects field‐based catalysts discussed.

Язык: Английский

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Highly Strained Bi‐MOF on Bismuth Oxyhalide Support with Tailored Intermediate Adsorption/Desorption Capability for Robust CO₂ Photoreduction

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(40)

Опубликована: Авг. 3, 2022

Herein, using as-designed surface-mounted Bismuth-based metal-organic framework (Bi-MOF) on two-dimensional BiOBr support, as an operable platform for site-specific strain engineering to tailor the intermediate adsorption/desorption capability in CO2 photocatalytic conversion is proposed. Giant compressive up 7.85 % successfully induced Bi-MOF revealed by HRTEM images and geometric phase analysis well situ Raman characterization, which largely downshifts p band center of Bi nodes intensifies their unsaturated state. In-depth explorations are put onto p-p (Bi 6p /CO 2p) orbital hybridization. Taking adsorption process example, 1π 7σ frontier molecule orbitals 2p both strain-free strained models shift downwards Fermi level, indicative fast . Meanwhile, further induces new non-degenerate overlapping near intensified orbitals, stimulating activation absorbed molecules.

Язык: Английский

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Controlled synthesis of hollow carbon ring incorporated g-C3N4 tubes for boosting photocatalytic H2O2 production

Applied Catalysis B Environment and Energy, Год журнала: 2023, Номер 337, С. 122933 - 122933

Опубликована: Май 31, 2023

Язык: Английский

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Zinc porphyrin/g-C3N4 S-scheme photocatalyst for efficient H2O2 production

Chemical Engineering Journal, Год журнала: 2023, Номер 467, С. 143528 - 143528

Опубликована: Май 15, 2023

Язык: Английский

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An Unsaturated Bond Strategy to Regulate Active Centers of Metal‐Free Covalent Organic Frameworks for Efficient Oxygen Reduction

Angewandte Chemie International Edition, Год журнала: 2022, Номер 61(46)

Опубликована: Сен. 22, 2022

Unsaturated environment is the key to affect catalytic activity of oxygen reduction reaction (ORR). Unveiling effect unsaturated sites toward ORR importance due vague states. Reported here a proof-of-concept strategy on evaluation bonds (UBs) adjacent carbon by precisely developing two metal-free vinyl-/azo-decorated covalent organic frameworks (Vinyl-COF and Azo-COF) as catalysts. The as-prepared UB-COFs exhibit good performance than control Py-COF comparable most reported Supported theory calculations in situ Raman spectra-electrochemistry, it revealed that UBs catalysts can produce para-activation, identifying para C=N groups active centers. Importantly, intrinsic induce local charge redistribution, make molecular skeleton possess high isosurface map distribution, with an efficient affinity for intermediates.

Язык: Английский

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Highly efficient flower-like ZnIn2S4/CoFe2O4 photocatalyst with p-n type heterojunction for enhanced hydrogen evolution under visible light irradiation

Journal of Colloid and Interface Science, Год журнала: 2023, Номер 641, С. 26 - 35

Опубликована: Март 11, 2023

Язык: Английский

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