TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation.

نویسندگان

  • Na Zhou
  • Lakshminarayana Polavarapu
  • Nengyue Gao
  • Yanlin Pan
  • Peiyan Yuan
  • Qing Wang
  • Qing-Hua Xu
چکیده

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.

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عنوان ژورنال:
  • Nanoscale

دوره 5 10  شماره 

صفحات  -

تاریخ انتشار 2013