Invited for this month's cover is the group of Wingkei Ho at The Education University of Hong Kong. The Cover shows the effect of the number of heterojunction knots in an all-organic photocatalyst on the separation of photogenerated carriers. The heterojunction knots could improve the migration efficiency of carriers between Melem and the formed pyromellitic diimide. The oxygen adsorbed on the surface of the material can be reduced by electrons to the reactive oxygen species superoxide anion (⋅O ), thereby achieving the purpose of removing pollutants. The Research Article itself is available at 10.1002/cssc.202200477.
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http://dx.doi.org/10.1002/cssc.202200875 | DOI Listing |
ChemSusChem
October 2024
Department of Chemical Sciences, University of Padova, Via Marzolo 1, Padova, Italy.
COF engineering with a built-in, high concentration of defined N-doped sites overcomes the "black-box" drawback of conventional trial-and-error N-doping methods (used in polymeric carbon nitride and graphene), that hamper a directed evolution of functional carbon interfaces based on structure-reactivity guidelines. The cutting-edge challenge is to dissect the many complex and interdependent functions that originate from reticular N-doping, including modification of the material optoelectronics, band alignments, interfacial contacts and co-localization of active-sites, producing a multiple-set of effectors that can all play a role to regulate photocatalysis. Herein, an ON-OFF gated photocatalytic H evolution (PHE) is dictated by the Pt-N-carbon active sites and probed with a dual COF platform, based on stable β-ketoenamine connectivities made of triformylphloroglucinol (Tp) as the acceptor knots and 1,4-diaminonaphtalene (Naph) or 5,8-diaminoisoquinoline (IsoQ) as donors.
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June 2022
Department of Science and Environmental Studies and Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Hong Kong, P. R. China.
Invited for this month's cover is the group of Wingkei Ho at The Education University of Hong Kong. The Cover shows the effect of the number of heterojunction knots in an all-organic photocatalyst on the separation of photogenerated carriers. The heterojunction knots could improve the migration efficiency of carriers between Melem and the formed pyromellitic diimide.
View Article and Find Full Text PDFChemSusChem
June 2022
Department of Science and Environmental Studies and Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Hong Kong, P. R. China.
The separation efficiency of photogenerated carriers in the g-C N system could be improved by the construction of all-organic heterojunctions. However, g-C N has a large π-π conjugated plane that induces a low number of amino groups (-NH ), which are the sites of the heterojunction reaction with organic molecules. In this case, few heterojunction knots can be constructed, and the enhancement effect of the heterojunction cannot be fully displayed.
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