Au nanoparticles in nanocrystalline TiO2-NiO films for SPR-based, selective H2S gas sensing

Download
  1. (PDF, 1 MB)
  2. Get@NRC: Au nanoparticles in nanocrystalline TiO2-NiO films for SPR-based, selective H2S gas sensing (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1021/cm100297q
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleChemistry of Materials
Volume22
Issue11
Pages34073417; # of pages: 11
AbstractThin films composed of Au nanoparticles dispersed inside a TiO₂-NiO mixed oxide matrix are prepared by the sol-gel method, resulting in nanostructured composites with a morphology and crystallinity that depend on synthesis parameters and thermal treatment. Their functional activity as hydrogen sulfide optical sensors is due to Au-localized surface plasmon resonance (SPR) which is reversible. The detection sensitivity is shown to be down to a few parts per million of H₂S, and almost no interference in response is observed during simultaneous exposure to CO or H₂, resulting in a highly sensitive and selective sensor for hydrogen sulfide detection. For mechanistic studies, experimental evidence using reaction product analysis and thin film surface characterization suggests a direct catalytic oxidation of H₂S over the Au-TiO₂-NiO nanocomposite film.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Chemical Process and Environmental Technology
Peer reviewedYes
NRC number51856
NPARC number15142166
Export citationExport as RIS
Report a correctionReport a correction
Record identifierabbd5858-d810-46b0-bc84-4c5011f687dd
Record created2010-05-05
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)