Structurally and Surficially Activated TiO2 Nanomaterials for Photochemical Reactions

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

This review highlights recent advancements in TiO 2 photocatalysts, emphasizing key strategies to enhance their performance for environmental remediation and energy conversion technologies.

Language: Английский

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Recent progress of porous covalent organic frameworks membranes for gas- and liquid-phase separation towards environmental chemical engineering applications

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115487 - 115487

Published: Jan. 1, 2025

Language: Английский

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Functionalized Modification of Conjugated Porous Polymers for Full Reaction Photosynthesis of H₂O₂

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

Published: Oct. 16, 2024

Abstract Modulating the molecular structure to achieve full reaction including oxygen reduction and water oxidation is a promising strategy for efficient photosynthesis of hydrogen peroxide (H 2 O ) but remains challenge. Herein, triphenylamine naphthalimide‐based conjugated porous polymers are synthesized with photo oxidation‐reduction structures, then sulfonate (─SO 3 H) quaternary ammonium groups introduced via post‐modification produce two photocatalysts named NI‐TPA‐NI‐SO H NI‐TPA‐NI‐N, respectively. Introducing charged functional has improved hydrophilicity (O adsorption, beyond that, ─SO further stabilizes adsorbed bonding as well accelerates photogenerated carrier separation electron/proton transport that enables . Therefore, motivated by charge separation, stabilized boosted proton‐coupled electron transfer, exhibits highest light‐driven production rate among three photocatalysts, reaching 3.40 mmol g −1 h , which 4.9‐fold NI‐TPA‐NI. Remarkably, in presence ethylenediaminetetraacetic acid disodium salt, its significantly enhances 14.5 superior most reported organic best knowledge.

Language: Английский

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Isomerization of Covalent Organic Frameworks for Efficiently Activating Molecular Oxygen and Promoting Hydrogen Peroxide Photosynthesis

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 27, 2024

Abstract Constitutional‐isomerized covalent organic frameworks (COFs), constructed by swapping monomers around imine bonds, have attracted attention for their distinct optoelectronic properties, which significantly impact photocatalytic performance. However, limited research has delved into the inherent relationship between isomerization and enhancement of H 2 O photosynthesis. Herein, a pair isomeric COFs linked bonds (PB‐PT‐COF PT‐PB‐COF) is synthesized, it proved that exhibit different rate‐determining steps in generation process , resulting twofold increase efficiency. Specifically, PT‐PB‐COF demonstrates effective adsorption activation molecular oxygen (O + e − → •O ), leading to significant improvement In contrast, PB‐PT‐COF exhibits robust interaction with O, enabling direct oxidation (H h ). This study provides thorough understanding intrinsic mechanism underlying constitutional‐isomerized generation, offering insights further optimizing building units.

Language: Английский

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Reprogram Local Electronic Configuration in Multicomponent Covalent–Organic Frameworks for Efficient Hydrogen Peroxide Photoproduction

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

Published: Feb. 19, 2025

Covalent organic frameworks (COFs) have recently demonstrated significant potential for photocatalysis. Optimizing the local electronic environment in COFs has been considered to be critical enhancing photocatalytic activity. Here, we report a one-pot "grafting-to" strategy reprogram configurations of series isoreticular multicomponent by introducing electron-donating or electron-withdrawing groups into pores transform photoinert photoactive and form intramolecular donor–acceptor (D-A) structures. Such D-A structures enhanced overall hydrogen peroxide photoproduction facilitating charge carrier separation optimizing band achieve oxygen reduction reaction water oxidation simultaneously. Notably, one incorporated with 2-aminothiazole exhibits production rate 3701 μmol g–1 h–1 solar-to-chemical conversion efficiency 0.13% without use any sacrificial reagents, it 100% bacterial killing rates remarkable >90% biofilm removal capability. This COF modification strategy, which not reported before, offers unique approach constructing highly active photocatalysts containing great future design antibacterial therapies.

Language: Английский

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Robust synergistic effects of doping and defect engineering in photocatalytic H2O2 production

Materials Reports Energy, Journal Year: 2025, Volume and Issue: unknown, P. 100325 - 100325

Published: Feb. 1, 2025

Language: Английский

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Bringing Porous Framework Materials toward Photocatalytic H₂O₂ Production

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Photocatalytic H2O2 production driven by renewable solar energy is a promising and sustainable approach, with porous framework materials such as metal-organic frameworks (MOFs), covalent organic (COFs), hydrogen-bonded (HOFs) emerging highly efficient catalysts. This Review first presents the current research state of in photosynthesis, focusing on progress across different mechanism insights gained through advanced techniques. Furthermore, systematic categorization material modifications aimed at enhancing photocatalytic efficiency provided, linking structural to improved performance. Key factors charge carrier separation transfer, reaction pathways, stability are comprehensively analyzed. Finally, challenges related stability, scalability, cost-effectiveness, discussed alongside opportunities for future advancements. aims provide into understanding optimizing scalable photosynthesis.

Language: Английский

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Zwitterionic covalent organic framework triggering enhanced H2O2 photoproduction via controllable built-in electric field design

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161631 - 161631

Published: March 1, 2025

Language: Английский

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Effect of Photodeposited Noble Metal Nanoparticles on the Sacrificial-Agent-Free H₂O₂ Photosynthesis Performance of g-C₃N₄

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 17, 2025

Language: Английский

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Self-Assembled Perylenediimide Nanoaggregates with an Alternate Stringlike Morphology as Photoanodes to Enhance the H₂O₂ Photoelectrochemical Cell Performance

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

A self-assembled supramolecular photocatalyst of benzoic acid-substituted perylenediimide (SA-BAPDI) is successfully prepared, forming an alternate stringlike morphology driven by intermolecular hydrogen-bonding and π-π interactions. This unusual induces a strong built-in electric field enormous π-conjugated effect, which can promote efficient separation photogenerated carriers. Meanwhile, SA-BAPDI applied as the photoanode in H2O2 photoelectrochemical cell for first time facilitate photocatalytic production water oxidation, be used fuel to generate electricity through redox reactions further achieve solar-chemical-electrical energy conversion. The SA-BAPDI-based displays maximum light power density 1.06 mW·cm-2 specific capacitance 5025 mF·cm-2 after 0.5 h irradiation, still retain original value 50% dark 12 continuous operation. study verifies that regulation materials benefits design development high-performance cell.

Language: Английский

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