Nano-design of quantum dot-based photocatalysts for hydrogen generation using advanced surface molecular chemistry

Handle URI:
http://hdl.handle.net/10754/563933
Title:
Nano-design of quantum dot-based photocatalysts for hydrogen generation using advanced surface molecular chemistry
Authors:
Yu, Weili; Noureldine, Dalal ( 0000-0002-8230-9903 ) ; Isimjan, Tayirjan T.; Lin, Bin; Del Gobbo, Silvano; Abulikemu, Mutalifu ( 0000-0002-3366-4239 ) ; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Anjum, Dalaver H.; Takanabe, Kazuhiro ( 0000-0001-5374-9451 )
Abstract:
Efficient photocatalytic hydrogen generation in a suspension system requires a sophisticated nano-device that combines a photon absorber with effective redox catalysts. This study demonstrates an innovative molecular linking strategy for fabricating photocatalytic materials that allow effective charge separation of excited carriers, followed by efficient hydrogen evolution. The method for the sequential replacement of ligands with appropriate molecules developed in this study tethers both quantum dots (QDs), as photosensitizers, and metal nanoparticles, as hydrogen evolution catalysts, to TiO2 surfaces in a controlled manner at the nano-level. Combining hydrophobic and hydrophilic interactions on the surface, CdSe-ZnS core-shell QDs and an Au-Pt alloy were attached to TiO2 without overlapping during the synthesis. The resultant nano-photocatalysts achieved substantially high-performance visible-light-driven photocatalysis for hydrogen evolution. All syntheses were conducted at room temperature and in ambient air, providing a promising route for fabricating visible-light-responsive photocatalysts.
KAUST Department:
KAUST Catalysis Center (KCC); Physical Sciences and Engineering (PSE) Division; Solar and Photovoltaic Engineering Research Center (SPERC); Advanced Nanofabrication, Imaging and Characterization Core Lab; Chemical Science Program; Materials Science and Engineering Program; Core Labs; Catalysis for Energy Conversion (CatEC)
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Phys. Chem. Chem. Phys.
Issue Date:
2015
DOI:
10.1039/c4cp04365k
Type:
Article
ISSN:
14639076
Sponsors:
The research reported herein was supported by the King Abdullah University of Science and Technology.
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Materials Science and Engineering Program; KAUST Catalysis Center (KCC); Solar and Photovoltaic Engineering Research Center (SPERC)

Full metadata record

DC FieldValue Language
dc.contributor.authorYu, Weilien
dc.contributor.authorNoureldine, Dalalen
dc.contributor.authorIsimjan, Tayirjan T.en
dc.contributor.authorLin, Binen
dc.contributor.authorDel Gobbo, Silvanoen
dc.contributor.authorAbulikemu, Mutalifuen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorTakanabe, Kazuhiroen
dc.date.accessioned2015-08-03T12:20:02Zen
dc.date.available2015-08-03T12:20:02Zen
dc.date.issued2015en
dc.identifier.issn14639076en
dc.identifier.doi10.1039/c4cp04365ken
dc.identifier.urihttp://hdl.handle.net/10754/563933en
dc.description.abstractEfficient photocatalytic hydrogen generation in a suspension system requires a sophisticated nano-device that combines a photon absorber with effective redox catalysts. This study demonstrates an innovative molecular linking strategy for fabricating photocatalytic materials that allow effective charge separation of excited carriers, followed by efficient hydrogen evolution. The method for the sequential replacement of ligands with appropriate molecules developed in this study tethers both quantum dots (QDs), as photosensitizers, and metal nanoparticles, as hydrogen evolution catalysts, to TiO2 surfaces in a controlled manner at the nano-level. Combining hydrophobic and hydrophilic interactions on the surface, CdSe-ZnS core-shell QDs and an Au-Pt alloy were attached to TiO2 without overlapping during the synthesis. The resultant nano-photocatalysts achieved substantially high-performance visible-light-driven photocatalysis for hydrogen evolution. All syntheses were conducted at room temperature and in ambient air, providing a promising route for fabricating visible-light-responsive photocatalysts.en
dc.description.sponsorshipThe research reported herein was supported by the King Abdullah University of Science and Technology.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleNano-design of quantum dot-based photocatalysts for hydrogen generation using advanced surface molecular chemistryen
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentSolar and Photovoltaic Engineering Research Center (SPERC)en
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentCatalysis for Energy Conversion (CatEC)en
dc.identifier.journalPhys. Chem. Chem. Phys.en
dc.contributor.institutionSchool of Materials Science and Engineering, Changchun University of Science and TechnologyChangchun, Jilin, Chinaen
kaust.authorYu, Weilien
kaust.authorIsimjan, Tayirjan T.en
kaust.authorDel Gobbo, Silvanoen
kaust.authorAbulikemu, Mutalifuen
kaust.authorHedhili, Mohamed N.en
kaust.authorAnjum, Dalaver H.en
kaust.authorTakanabe, Kazuhiroen
kaust.authorNoureldine, Dalalen
kaust.authorLin, Binen
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.