Laser-induced fabrication of platinum nanoshells having enhanced catalytic and Raman properties

作者：Kim Mee Rahn; Kim Jong Yeob; Kim Seol Ji; Jang Du Jeon^*

来源：Applied Catalysis A: General , 2011, 393(1-2): 317-322.

DOI：10.1016/j.apcata.2010.12.013

• Catalysis
• Laser irradiation
• Nanocomposite
• Nanoparticle
• SERS
• Silica

Platinum nanoclusters topped on silica nanospheres, prepared by a seeded-growth method, have been transformed into platinum nanoshells having uniform shell thickness of 6 nm via irradiation of nanosecond laser pulses. The thickness of platinum nanoshells can be tuned readily by adjusting the concentration of H(2)PtCl(6) for the growth of platinum nanoparticles on silica nanospheres. Compared with Pt nanoclusters-topped silica nanospheres, platinum nanoshells coated on silica nanospheres have been found to catalyze the degradation of rhodamine B very rapidly in the presence of KBH(4), and they show highly active surface-enhanced Raman scattering.

• 出版日期2011-2-15