| 초록 |
Silica multi-branched nanoparticle/Au (SMN/Au) nanohybrids with unique morphologies have been synthesized using a seed-mediated method. SMNs could be used as effective templates owing to their rough surfaces and abundant active sites. For the growth of SMN/Au nanohybrids, SMNs were preferentially functionalized with amine group by use of APTES. Through the reduction of HAuCl4, Au nanoparticles were grown on the surface of amine-functionalized SMNs. The morphology of SMN/Au nanohybrids, which was characterized through electron microscopies and UV-vis spectroscopy, demonstrates that the thickness of Au nanohybrids could be well controlled. SMN/Au nanohybrids showed interesting catalytic performances such as 4-nitrophenol reduction and ethanol oxidation. These SMN/Au nanohybrids can be used as efficient templates for the growth of secondary materials. |
