17 August 2014 Optical spectra of noble metal nanoparticles supported on zeolites
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Abstract
Optical spectra of noble metal nano-particles supported on different types of zeolites are studied and compared. The absorbance spectra of Cu, Ag and Au nanoparticles supported on mordenite, β-zeolite, Na/Y and H/Y zeolites respectively are reported. Spectra for pre-exchanged Au-Cu/Na/Y, Au-Ni/Na/Y and Au-Fe/Na/Y are also studied. A simple effective medium approach (Maxwell-Garnett) is used to obtain a theoretical complex effective dielectric function of the composite and to asses the sensibility of the plasmon resonance to the sample characteristics. The knowledge of these properties can hopefully be applied to the development of optical tools to monitor the synthetic path.
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Catalina López Bastidas, Elena Smolentseva, Roberto Machorro, Vitalii Petranovskii, "Optical spectra of noble metal nanoparticles supported on zeolites", Proc. SPIE 9163, Plasmonics: Metallic Nanostructures and Their Optical Properties XII, 91632H (17 August 2014); doi: 10.1117/12.2061096; https://doi.org/10.1117/12.2061096
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