title: TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation.
abstract: A facile method was used to prepare uniform Au NR/TiO2 and Au/Ag NR/TiO2 core-shell composite nanoparticles. Au/Ag NR/TiO2 nanoparticles were found to display significantly enhanced visible light photo-catalytic activity compared to Au NR/TiO2 and the commercially available TiO2 nanoparticles. The enhancement mechanism was ascribed to injection of hot electrons of photo-excited Au/Ag NRs to TiO2, which was confirmed by 633 nm laser induced reduction of silver ions on the surface of Au/Ag NR/TiO2 composite nanoparticles.
authors.affiliation: Department of Chemistry, National University of Singapore, Singapore 117543.
authors.forename: Na
authors.initials: N
authors.lastname: Zhou
authors.forename: Lakshminarayana
authors.initials: L
authors.lastname: Polavarapu
authors.forename: Nengyue
authors.initials: N
authors.lastname: Gao
authors.forename: Yanlin
authors.initials: Y
authors.lastname: Pan
authors.forename: Peiyan
authors.initials: P
authors.lastname: Yuan
authors.forename: Qing
authors.initials: Q
authors.lastname: Wang
authors.forename: Qing-Hua
authors.initials: QH
authors.lastname: Xu
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D008027:Light; D043942:Nanotubes / Q000737:chemistry*; D055668:Photochemical Processes; D012834:Silver / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: C009495:titanium dioxide; D012834:Silver; D006046:Gold; D014025:Titanium