Probing the stability of Pt nanoparticles encapsulated in sol-gel Al sub(2)O sub(3) using in situ and ex situ characterization techniques

Probing the stability of Pt nanoparticles encapsulated in sol-gel Al sub(2)O sub(3) using in situ and ex situ characterization techniques

In this work, we address the stability of platinum nanoparticles (Pt-NPs) encapsulated in alumina. Colloidal Pt-NPs capped with poly(N-vinyl-2-pyrrolidone) (PVP) were prepared and enclosed in an oxide matrix by incorporating them during the sol-gel synthesis of boehmite. PVP/Pt molar ratios of 0.2 a...

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Veröffentlicht in:Applied catalysis. A, General General, 2014-09, Vol.485, p.108-117
Hauptverfasser: Ribeiro, R U, Meira, D M, Rodella, C B, Oliveira, D C, Bueno, J MC, Zanchet, D
Format: Artikel
Sprache:eng
Schlagworte:
Aluminum oxide
Boehmite
Catalysis
Encapsulation
Nanoparticles
Platinum
Sol gel process
Stability
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Zusammenfassung:In this work, we address the stability of platinum nanoparticles (Pt-NPs) encapsulated in alumina. Colloidal Pt-NPs capped with poly(N-vinyl-2-pyrrolidone) (PVP) were prepared and enclosed in an oxide matrix by incorporating them during the sol-gel synthesis of boehmite. PVP/Pt molar ratios of 0.2 and 10 produced particles with similar average diameters (
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2014.07.039