Site-specific growth of Au particles on ZnO nanopyramids under ultraviolet illumination

Handle URI:
http://hdl.handle.net/10754/561662
Title:
Site-specific growth of Au particles on ZnO nanopyramids under ultraviolet illumination
Authors:
Yao, Kexin; Liu, Xin; Zhao, L. J.; Zeng, Huachun; Han, Yu ( 0000-0003-1462-1118 )
Abstract:
In this work, wurtzite ZnO nanocrystals with unique "pyramid" morphology were firstly prepared via solvothermal synthesis. It was determined that the ZnO nanopyramids are grown along the polar c-axis with the vertexes pointing to the [001] direction. When the mixture of ZnO nanopyramids and Au precursor (HAuCl4) was exposed to ultraviolet (UV) illumination, Au particles were site-specifically formed on the vertexes of ZnO nanopyramids. The obtained Au/ZnO nanocomposite showed significantly enhanced photocatalytic activity as compared to the bare ZnO nanopyramids. First-principles based calculations well explained the formation of ZnO nanopyramids as well as the site-specific growth of Au, and revealed that during the photocatalysis process the Au particles can accommodate photoelectrons and thus facilitate the charge separation. © 2011 The Royal Society of Chemistry.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Nanostructured Functional Materials (NFM) laboratory
Publisher:
Royal Society of Chemistry
Journal:
Nanoscale
Issue Date:
2011
DOI:
10.1039/c1nr10685f
PubMed ID:
21870000
Type:
Article
ISSN:
20403364
Sponsors:
This work was supported by the KAUST-NUS GCR Special Academic Partner Program from King Abdullah University of Science and Technology.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorYao, Kexinen
dc.contributor.authorLiu, Xinen
dc.contributor.authorZhao, L. J.en
dc.contributor.authorZeng, Huachunen
dc.contributor.authorHan, Yuen
dc.date.accessioned2015-08-03T09:01:44Zen
dc.date.available2015-08-03T09:01:44Zen
dc.date.issued2011en
dc.identifier.issn20403364en
dc.identifier.pmid21870000en
dc.identifier.doi10.1039/c1nr10685fen
dc.identifier.urihttp://hdl.handle.net/10754/561662en
dc.description.abstractIn this work, wurtzite ZnO nanocrystals with unique "pyramid" morphology were firstly prepared via solvothermal synthesis. It was determined that the ZnO nanopyramids are grown along the polar c-axis with the vertexes pointing to the [001] direction. When the mixture of ZnO nanopyramids and Au precursor (HAuCl4) was exposed to ultraviolet (UV) illumination, Au particles were site-specifically formed on the vertexes of ZnO nanopyramids. The obtained Au/ZnO nanocomposite showed significantly enhanced photocatalytic activity as compared to the bare ZnO nanopyramids. First-principles based calculations well explained the formation of ZnO nanopyramids as well as the site-specific growth of Au, and revealed that during the photocatalysis process the Au particles can accommodate photoelectrons and thus facilitate the charge separation. © 2011 The Royal Society of Chemistry.en
dc.description.sponsorshipThis work was supported by the KAUST-NUS GCR Special Academic Partner Program from King Abdullah University of Science and Technology.en
dc.publisherRoyal Society of Chemistryen
dc.titleSite-specific growth of Au particles on ZnO nanopyramids under ultraviolet illuminationen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalNanoscaleen
dc.contributor.institutionDepartment of Chemical and Biomolecular Engineering, Faculty of Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260 Singapore, Singaporeen
dc.contributor.institutionSchool of Chemistry, Dalian University of Technology, 116024, Chinaen
kaust.authorYao, Kexinen
kaust.authorHan, Yuen
kaust.authorZhao, L. J.en

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