The adsorption and reactivity of 4-nitrobenzonitrile on Ag and Ag/Pd nanoparticles immobilized on quartz surfaces have been studied by means of surface-enhanced Raman scattering (SERS) spectroscopy. It has been found that upon adsorption on Ag/Pd nanoparticles this compound undergoes reduction of the nitrogroup to form 4,4¢-azobis(benzonitrile). This process is due to the catalytic efficiency of the palladium clusters present on the surface of the silver nanoparticles. SERS spectra obtained from pure Ag and from Ag/Pd substrates have been assigned by mean of density functional theory calculations.
Surface-Enhanced Raman Scattering and Density Functional Theory Study of 4-Nitrobenzonitrile Adsorbed on Ag and Ag/Pd Nanoparticles / M. Muniz-Miranda; B. Pergolese ; A. Bigotto. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - STAMPA. - 112:(2008), pp. 6988-6992. [10.1021/jp711745t]
Surface-Enhanced Raman Scattering and Density Functional Theory Study of 4-Nitrobenzonitrile Adsorbed on Ag and Ag/Pd Nanoparticles
MUNIZ-MIRANDA, MAURIZIO;
2008
Abstract
The adsorption and reactivity of 4-nitrobenzonitrile on Ag and Ag/Pd nanoparticles immobilized on quartz surfaces have been studied by means of surface-enhanced Raman scattering (SERS) spectroscopy. It has been found that upon adsorption on Ag/Pd nanoparticles this compound undergoes reduction of the nitrogroup to form 4,4¢-azobis(benzonitrile). This process is due to the catalytic efficiency of the palladium clusters present on the surface of the silver nanoparticles. SERS spectra obtained from pure Ag and from Ag/Pd substrates have been assigned by mean of density functional theory calculations.File | Dimensione | Formato | |
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