Isolated Iridium Sites on Potassium-Doped Carbon-nitride wrapped Tellurium Nanostructures for Enhanced Glycerol Photooxidation

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dc.citation.articleNumber2313793en_US
dc.citation.issueNumber29en_US
dc.citation.journalTitleAdvanced Functional Materialsen_US
dc.citation.volumeNumber34en_US
dc.contributor.authorKumar, Pawanen_US
dc.contributor.authorAskar, Abdelrahmanen_US
dc.contributor.authorWang, Jiuen_US
dc.contributor.authorRoy, Soumyabrataen_US
dc.contributor.authorKancharlapalli, Srinivasuen_US
dc.contributor.authorWang, Xiyangen_US
dc.contributor.authorJoshi, Varaden_US
dc.contributor.authorHu, Hangtianen_US
dc.contributor.authorKannimuthu, Karthicken_US
dc.contributor.authorTrivedi, Dhwanilen_US
dc.contributor.authorBollini, Praveenen_US
dc.contributor.authorWu, Yimin A.en_US
dc.contributor.authorAjayan, Pulickel M.en_US
dc.contributor.authorAdachi, Michael M.en_US
dc.contributor.authorHu, Jinguangen_US
dc.contributor.authorKibria, Md Golamen_US
dc.date.accessioned2024-08-09T16:25:24Zen_US
dc.date.available2024-08-09T16:25:24Zen_US
dc.date.issued2024en_US
dc.description.abstractMany industrial processes such transesterification of fatty acid for biodiesel production, soap manufacturing and biosynthesis of ethanol generate glycerol as a major by-product that can be used to produce commodity chemicals. Photocatalytic transformation of glycerol is an enticing approach that can exclude the need of harsh oxidants and extraneous thermal energy. However, the product yield and selectivity remain poor due to low absorption and unsymmetrical site distribution on the catalyst surface. Herein, tellurium (Te) nanorods/nanosheets (TeNRs/NSs) wrapped potassium-doped carbon nitride (KCN) van der Waal (vdW) heterojunction (TeKCN) is designed to enhance charge separation and visible-NIR absorption. The iridium (Ir) single atom sites decoration on the TeKCN core-shell structure (TeKCNIr) promotes selective oxidation of glycerol to glyceraldehyde with a conversion of 45.6% and selectivity of 61.6% under AM1.5G irradiation. The catalytic selectivity can reach up to 88% under 450 nm monochromatic light. X-ray absorption spectroscopy (XAS) demonstrates the presence of undercoordinated IrN2O2 sites which improved catalytic selectivity for glycol oxidation. Band energies and computational calculations reveal faile charge transfer in the TeKCNIr heterostructure. EPR and scavenger tests discern that superoxide (O2•−) and hydroxyl (•OH) radicals are prime components driving glycerol oxidation.en_US
dc.identifier.citationKumar, P., Askar, A., Wang, J., Roy, S., Kancharlapalli, S., Wang, X., Joshi, V., Hu, H., Kannimuthu, K., Trivedi, D., Bollini, P., Wu, Y. A., Ajayan, P. M., Adachi, M. M., Hu, J., & Kibria, M. G. (2024). Isolated Iridium Sites on Potassium-Doped Carbon-nitride wrapped Tellurium Nanostructures for Enhanced Glycerol Photooxidation. Advanced Functional Materials, 34(29), 2313793. https://doi.org/10.1002/adfm.202313793en_US
dc.identifier.digitalIsolated-Iridium-Sitesen_US
dc.identifier.doihttps://doi.org/10.1002/adfm.202313793en_US
dc.identifier.urihttps://hdl.handle.net/1911/117625en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license.  Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleIsolated Iridium Sites on Potassium-Doped Carbon-nitride wrapped Tellurium Nanostructures for Enhanced Glycerol Photooxidationen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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