Core-crown quantum nanoplatelets with favorable type-II heterojunctions boost charge separation and photocatalytic NO oxidation on TiO2

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buir.contributor.authorEbrahimi, Elnaz
buir.contributor.authorİrfan, Muhammad
buir.contributor.authorShabani, Farzan
buir.contributor.authorYusuf, Yusuf
buir.contributor.authorKarakurt, Bartu
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.authorÖzensoy, Emrah
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage6343en_US
dc.citation.issueNumber24en_US
dc.citation.spage6329en_US
dc.citation.volumeNumber12en_US
dc.contributor.authorEbrahimi, Elnaz
dc.contributor.authorİrfan, Muhammad
dc.contributor.authorShabani, Farzan
dc.contributor.authorKoçak, Yusuf
dc.contributor.authorKarakurt, Bartu
dc.contributor.authorErdem, E.
dc.contributor.authorDemir, Hilmi Volkan
dc.contributor.authorÖzensoy, Emrah
dc.date.accessioned2021-02-27T23:33:06Z
dc.date.available2021-02-27T23:33:06Z
dc.date.issued2020-09
dc.departmentDepartment of Chemistryen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractFunctionalization of TiO2 (P25) with oleic acid‐capped CdSe(core)/CdSeTe(crown) quantum‐well nanoplatelets (NPL) yielded remarkable activity and selectivity toward nitrate formation in photocatalytic NOx oxidation and storage (PHONOS) under both ultraviolet (UV‐A) and visible (VIS) light irradiation. In the NPL/P25 photocatalytic system, photocatalytic active sites responsible for the NO(g) photo‐oxidation and NO2 formation reside mostly on titania, while the main function of the NPL is associated with the photocatalytic conversion of the generated NO2 into the adsorbed NO3− species, significantly boosting selectivity toward NOx storage. Photocatalytic improvement in NOx oxidation and storage upon NPL functionalization of titania can also be associated with enhanced electron‐hole separation due to a favorable Type‐II heterojunction formation and photo‐induced electron transfer from the CdSeTe crown to the CdSe core of the quantum well system, where the trapped electrons in the CdSe core can later be transferred to titania. Re‐usability of NPL/P25 system was also demonstrated upon prolonged use of the photocatalyst, where NPL/P25 catalyst surpassed P25 benchmark in all tests.en_US
dc.embargo.release2021-09-22
dc.identifier.doihttps://dx.doi.org/10.1002/cctc.202000749en_US
dc.identifier.issn1867-3880
dc.identifier.urihttp://hdl.handle.net/11693/75640
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1002/cctc.202000749en_US
dc.source.titleChemCatChemen_US
dc.subjectCdSe/CdSeTe nanoplateletsen_US
dc.subjectPHONOSen_US
dc.subjectDeNOxen_US
dc.subjectTitanium dioxideen_US
dc.subjectPhotocatalytic NOx abatementen_US
dc.subjectQuantum-wellsen_US
dc.titleCore-crown quantum nanoplatelets with favorable type-II heterojunctions boost charge separation and photocatalytic NO oxidation on TiO2en_US
dc.typeArticleen_US
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Department of Chemistry
Department of Electrical and Electronics Engineering
Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)