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Nanomaterials 2017, 7(9), 255; doi:10.3390/nano7090255

Hollow Au–Ag Alloy Nanorices and Their Optical Properties

1
Applied of Physics, College of Physics, Chongqing University, Chongqing 400044, China
2
Soft Matter and Interdisciplinary Research Center, College of Physics, Chongqing University, Chongqing 400044, China
*
Authors to whom correspondence should be addressed.
Received: 26 July 2017 / Revised: 29 August 2017 / Accepted: 29 August 2017 / Published: 4 September 2017
(This article belongs to the Special Issue Nanomaterials for SERS Applications)
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Abstract

Hollow noble metal nanoparticles have excellent performance not only in surface catalysis but also in optics. In this work, the hollow Au–Ag alloy nanorices are fabricated by the galvanic replacement reaction. The dark-field spectrum points out that there is a big difference in the optical properties between the pure Ag nanorices and the hollow alloy nanorices that exhibit highly tunable localized surface plasmon resonances (LSPR) and that possess larger radiative damping, which is also indicated by the finite element method. Furthermore, the surface enhanced Raman scattering (SERS) and oxidation test indicate that hollow Au–Ag alloy nanorices show good anti-oxidation and have broad application prospects in surface-plasmon-related fields. View Full-Text
Keywords: hollow nanorice; Au–Ag alloy; surface plasmon; surface enhanced Raman spectroscopy hollow nanorice; Au–Ag alloy; surface plasmon; surface enhanced Raman spectroscopy
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Yu, K.; Sun, X.; Pan, L.; Liu, T.; Liu, A.; Chen, G.; Huang, Y. Hollow Au–Ag Alloy Nanorices and Their Optical Properties. Nanomaterials 2017, 7, 255.

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