Covalent organic frameworks for photocatalytic applications

Applied Catalysis B Environment and Energy, Journal Year: 2020, Volume and Issue: 276, P. 119174 - 119174

Published: May 28, 2020

Language: Английский

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Modulating Benzothiadiazole‐Based Covalent Organic Frameworks via Halogenation for Enhanced Photocatalytic Water Splitting

Angewandte Chemie International Edition, Journal Year: 2020, Volume and Issue: 59(39), P. 16902 - 16909

Published: July 15, 2020

Two-dimensional covalent organic frameworks (2D COFs), an emerging class of crystalline porous polymers, have been recognized as a new platform for efficient solar-to-hydrogen energy conversion owing to their pre-designable structures and tailor-made functions. Herein, we demonstrate that slight modulation the chemical structure typical photoactive 2D COF (Py-HTP-BT-COF) via chlorination (Py-ClTP-BT-COF) fluorination (Py-FTP-BT-COF) can lead dramatically enhanced photocatalytic H2 evolution rates (HER=177.50 μmol h-1 with high apparent quantum efficiency (AQE) 8.45 % Py-ClTP-BT-COF). Halogen at benzothiadiazole moiety efficiently suppress charge recombination significantly reduce barrier associated formation H intermediate species (H*) on polymer surface. Our findings provide prospects toward design synthesis highly active photocatalysts solar-to-chemical conversion.

Language: Английский

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Optoelectronic processes in covalent organic frameworks

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 50(3), P. 1813 - 1845

Published: Dec. 17, 2020

Covalent organic frameworks (COFs) are crystalline porous materials constructed from molecular building blocks using diverse linkage chemistries. Their modular construction system allows not only for tailor-made design but also an immense variety of blocks, opening the door to numerous different functionalities and potential applications. As a consequence, large number that can act as light-harvesters, semiconductors, ligands, binding sites or redox centers have recently been integrated into scaffolds COFs. This unique combination reticular chemistry with control intrinsic properties paves way towards new semiconducting (opto-)electronic applications such sensors, photocatalysts -electrodes, supercapacitor battery materials, solar-harvesting devices light emitting diodes. With developments regarding motif, highly stable still tunable COFs developed even under harsh conditions. Further, stacking modes distances in investigated powerful means optical electrical characteristics these self-assembled frameworks. Advanced understanding optoelectronic processes has enabled their implementation promising real-world review highlights key concepts synthesis electro- photoactive well our frameworks, hence establishing paradigm rational well-defined novel devices.

Language: Английский

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Updates on the Roadmap for Photocatalysis

ACS Catalysis, Journal Year: 2020, Volume and Issue: 10(10), P. 5493 - 5501

Published: April 14, 2020

ADVERTISEMENT RETURN TO ISSUEPREVViewpointNEXTUpdates on the Roadmap for PhotocatalysisMichele MelchionnaMichele MelchionnaChemistry Department, INSTM and ICCOM-CNR Trieste Research Unit, University of Trieste, Via L. Giorgieri 1, 34127, ItalyMore by Michele Melchionnahttp://orcid.org/0000-0001-9813-9753 Paolo Fornasiero*Paolo FornasieroChemistry Italy*Email P.F.: [email protected]More Fornasierohttp://orcid.org/0000-0003-1082-9157Cite this: ACS Catal. 2020, 10, 5493–5501Publication Date (Web):April 14, 2020Publication History Received13 March 2020Published online14 April inissue 15 May 2020https://doi.org/10.1021/acscatal.0c01204Copyright © 2020 American Chemical SocietyRIGHTS & PERMISSIONSACS AuthorChoiceCC: Creative CommonsBY: Credit must be given to creatorArticle Views16419Altmetric-Citations196LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing this article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score is a quantitative measure attention that research has received online. Clicking donut icon will load page at altmetric.com with additional details score social media presence article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InReddit (4 MB) Get e-AlertsSUBJECTS:Catalysts,Materials,Metals,Photocatalysis,Photocatalysts e-Alerts

Language: Английский

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Covalent organic frameworks

Nature Reviews Methods Primers, Journal Year: 2023, Volume and Issue: 3(1)

Published: Jan. 12, 2023

Language: Английский

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