(Gold core)/(titania shell) nanostructures for plasmon-enhanced photon harvesting and generation of reactive oxygen species

Handle URI:
http://hdl.handle.net/10754/563248
Title:
(Gold core)/(titania shell) nanostructures for plasmon-enhanced photon harvesting and generation of reactive oxygen species
Authors:
Fang, Caihong; Jia, Henglei; Chang, Shuai; Ruan, Qifeng; Wang, Peng ( 0000-0003-0856-0865 ) ; Chen, Tao; Wang, Jianfang
Abstract:
Integration of gold and titania in a nanoscale core/shell architecture can offer large active metal/semiconductor interfacial areas and avoid aggregation and reshaping of the metal nanocrystal core. Such hybrid nanostructures are very useful for studying plasmon-enhanced/enabled processes and have great potential in light-harvesting applications. Herein we report on a facile route to (gold nanocrystal core)/(titania shell) nanostructures with their plasmon band synthetically variable from ∼700 nm to over 1000 nm. The coating method has also been applied to other mono- and bi-metallic Pd, Pt, Au nanocrystals. The gold/titania nanostructures have been employed as the scattering layer in dye-sensitized solar cells, with the resultant cells exhibiting a 13.3% increase in the power conversion efficiency and a 75% decrease in the scattering-layer thickness. Moreover, under resonant excitation, the gold/titania nanostructures can efficiently utilize low-energy photons to generate reactive oxygen species, including singlet oxygen and hydroxyl radicals.
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination and Reuse Research Center (WDRC); Environmental Science and Engineering Program; Environmental Nanotechnology Lab
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Energy Environ. Sci.
Issue Date:
2014
DOI:
10.1039/c4ee01787k
Type:
Article
ISSN:
17545692
Sponsors:
This work was supported by Hong Kong RGC GRF (Ref. no.: CUHK403312, Project Code: 2130320) and NNSFC (Ref. no.: 21229101).
Appears in Collections:
Articles; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorFang, Caihongen
dc.contributor.authorJia, Hengleien
dc.contributor.authorChang, Shuaien
dc.contributor.authorRuan, Qifengen
dc.contributor.authorWang, Pengen
dc.contributor.authorChen, Taoen
dc.contributor.authorWang, Jianfangen
dc.date.accessioned2015-08-03T11:44:04Zen
dc.date.available2015-08-03T11:44:04Zen
dc.date.issued2014en
dc.identifier.issn17545692en
dc.identifier.doi10.1039/c4ee01787ken
dc.identifier.urihttp://hdl.handle.net/10754/563248en
dc.description.abstractIntegration of gold and titania in a nanoscale core/shell architecture can offer large active metal/semiconductor interfacial areas and avoid aggregation and reshaping of the metal nanocrystal core. Such hybrid nanostructures are very useful for studying plasmon-enhanced/enabled processes and have great potential in light-harvesting applications. Herein we report on a facile route to (gold nanocrystal core)/(titania shell) nanostructures with their plasmon band synthetically variable from ∼700 nm to over 1000 nm. The coating method has also been applied to other mono- and bi-metallic Pd, Pt, Au nanocrystals. The gold/titania nanostructures have been employed as the scattering layer in dye-sensitized solar cells, with the resultant cells exhibiting a 13.3% increase in the power conversion efficiency and a 75% decrease in the scattering-layer thickness. Moreover, under resonant excitation, the gold/titania nanostructures can efficiently utilize low-energy photons to generate reactive oxygen species, including singlet oxygen and hydroxyl radicals.en
dc.description.sponsorshipThis work was supported by Hong Kong RGC GRF (Ref. no.: CUHK403312, Project Code: 2130320) and NNSFC (Ref. no.: 21229101).en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.title(Gold core)/(titania shell) nanostructures for plasmon-enhanced photon harvesting and generation of reactive oxygen speciesen
dc.typeArticleen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentEnvironmental Nanotechnology Laben
dc.identifier.journalEnergy Environ. Sci.en
dc.contributor.institutionDepartment of Physics, Chinese University of Hong KongShatin, Hong Kongen
kaust.authorWang, Pengen
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