Artificial photosynthesis platform of 2D/2D MXene/crystalline covalent organic frameworks heterostructure for efficient photoenzymatic CO2 reduction

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 348, P. 123827 - 123827

Published: April 24, 2024

Language: Английский

---

Donor-acceptor covalent organic framework/ZnIn2S4 core-shell structure S-scheme heterostructure for efficient photocatalytic hydrogen evolution

Nano Energy, Journal Year: 2024, Volume and Issue: 126, P. 109632 - 109632

Published: April 18, 2024

Language: Английский

---

Donor-acceptor type porphyrin based covalent organic framework films as a photocathodic sensor for the polybrominated diphenyl ethers detection

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137237 - 137237

Published: Jan. 1, 2025

Language: Английский

---

The role of functional-group-tuning in adsorption-photoreduction of U(VI) onto β-ketoenamine covalent organic frameworks photosystem

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 467, P. 143415 - 143415

Published: May 11, 2023

Language: Английский

---

Precisely modulate interfacial Bi-O bridge bond in Co-TCPP/Bi3O4Br to trigger long-lasting charge separation for boosting CO2 photoreduction

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 465, P. 142663 - 142663

Published: March 30, 2023

Language: Английский

---

Organic Donor‐Acceptor Systems for Photocatalysis

Advanced Science, Journal Year: 2023, Volume and Issue: 11(10)

Published: Dec. 25, 2023

Abstract Organic semiconductor materials are considered to be promising photocatalysts due their excellent light absorption by chromophores, easy molecular structure tuning, and solution‐processable properties. In particular, donor‐acceptor (D‐A) type organic photocatalytic synthesized introducing D A units intra‐ or intermolecularly, have made great progress in studies. More more studies demonstrated that the D‐A combine effective carrier separation, tunable bandgap, sensitive optoelectronic response, an strategy for enhancing absorption, improving exciton dissociation, optimizing transport. This review provides a thorough overview of strategies aimed at performance semiconductors. Initially, essential methods modifying materials, such as interface engineering, crystal interaction modulation, briefly discussed. Subsequently, delves into various based on intramolecular intermolecular interactions, encompassing small molecules, conjugated polymers, crystalline supramolecules, heterojunctions. Meanwhile, energy band structures, dynamics, redox‐active sites under different bonding modes Finally, highlights advanced applications photocatalystsand outlines prospective challenges opportunities.

Language: Английский

---

Rational Regulation of the Exciton Effect of Acrylonitrile-Linked Covalent Organic Framework toward Boosting Visible-Light-Driven Hydrogen Evolution

ACS Catalysis, Journal Year: 2023, Volume and Issue: 14(1), P. 533 - 546

Published: Dec. 23, 2023

Covalent organic frameworks (COFs) exhibit relatively inefficient exciton dissociation and free charge generation, which arise from their high binding energy. Here, a series of crystalline, acrylonitrile-linked COFs are fabricated to regulate effects by strategies shortening the linker length (TP-PN COF), introducing nitrogen atoms (TP-BPyN post-protonation PCOF). The temperature-dependent photoluminescence (PL) spectra Nyquist plots reveal decrease in energy transfer resistance TP-PN COF, TP-BPyN PCOF. Thus, an increase carrier generation extension lifetime achieved, as demonstrated transient photocurrents response time-resolved fluorescence (TRFS). DFT calculation reveals that low could relate higher planarity structure. Besides, light absorption performance was improved length, while distribution density Pt nanoparticles H2 evolution reaction (HER) sites significantly anchor points. As result, optimized COF show efficient photocatalytic HER rates 10,890 6457 μmol g–1 h–1, respectively, 13.92 8.26 times compared without modification (TP-BPN 782 h–1). Through simple strategy, is redistributed structural distortion reduced. Consequently, rate PCOF increased 12,276 h–1. Meanwhile, further boosted 15,929 22,438 h–1 optimizing volume fractions sacrificial agent pH system, respectively. This work pave way for developing photocatalysts via rational regulation effect.

Language: Английский

---

Molecule Dipole and Steric Hindrance Engineering to Modulate Electronic Structure of PTCDA/PTA for Highly Efficient Photocatalytic Hydrogen Evolution and Antibiotics Degradation

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(17)

Published: Dec. 22, 2023

Abstract Insufficient charge separation and slow exciton transport severely limit the utilization of perylene‐plane‐based organic photocatalysts. Herein, a novel PTCDA/PTA (perylene‐3,4,9,10‐tetracarboxylic dianhydride/perylenetetracarboxylic acid) is successfully prepared for first time by in situ crystallization PTA on surface PTCDA through π – interaction. The loading with 8%PTCDA showed optimum photocatalytic performance. H 2 evolution rate reached 45.06 mmol g −1 h , which 1.93‐fold 4506.00‐fold higher than that pure PTCDA. Meanwhile, it also exhibited excellent antibiotics photodegradation activities, both removal efficiency tetracycline hydrochloride (TC‐HCl) ofloxacin (OFL) are more over 90% within 30 min. By modulating structures perylene plane, steric hindrance internal dipole moments can be precisely tuned. These lead to change stacking mode, promoting degree formation strong electric field, while improved activity. Excited state density functional theory (DFT) calculations unveil redistribution electron‐hole pairs, obeys type II mechanism. proposed mechanism determined liquid chromatography‐mass spectrometry (LC‐MS). Besides, toxicities degradation products evaluated. work provides useful strategy design high‐performance multifunctional photocatalysts toward water remediation energy production.

Language: Английский

---

New breakthrough in dye removal: Ultrafast removal of high concentration MB with biochar-based organic photocatalysts under indoor light (30W/m2) drive

Journal of Cleaner Production, Journal Year: 2024, Volume and Issue: 449, P. 141539 - 141539

Published: March 9, 2024

Language: Английский

---

Minimizing Interfacial Energy Loss and Volatilization of Formamidinium via Polymer‐Assisted D–A supramolecular Self‐Assembly Interface for Inverted Perovskite Solar Cells with 25.78% Efficiency

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract 2D perovskite passivation strategies effectively reduce defect‐assisted carrier nonradiative recombination losses on the surface. Nonetheless, severe energy are causing by thermalization, interfacial recombination, and conduction band offset still persist at heterojunction perovskite/PCBM interfaces, which limits further performance enhancement of inverted PSCs. Here, 5,10,15,20‐tetrakis(pentafluorophenyl)porphyrin (5FTPP) is introduced between 3D/2D PCBM. Compared to tetraphenylporphyrin without electron‐withdrawing fluoro‐substituents, 5FTPP can self‐assemble with PCBM interface into donor–acceptor (D–A) complex stronger supramolecular interaction lower transfer losses. This rapid from donor acceptor (PCBM) within femtosecond scale demonstrated enlarge hot extraction rates ranges, reducing thermalization Furthermore, incorporation polystyrene derivative (PD) reinforces D–A inhibiting self‐π–π stacking 5FTPP, while fine‐tuning suppressing via Schottky barrier, dipole, n‐doping. Notably, multidentate anchoring PD‐5FTPP FA + , Pb 2+ I − mitigates adverse effects volatilization during thermal stress. Ultimately, devices achieve a power conversion efficiency 25.78% (certified: 25.36%), maintaining over 90% initial after 1000 h continuous illumination maximum point (65 °C) under ISOS‐L‐2 protocol.

Language: Английский

---