Deposit of UV- or γ-synthesized gold nanoparticles on TiO2 powder using lipid-based multilamellar vesicles
LAFON, Adeline
Centre de recherches Paul Pascal [CRPP]
Departement of Chemistry and Faculty of Pharmarcy
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Centre de recherches Paul Pascal [CRPP]
Departement of Chemistry and Faculty of Pharmarcy
LAFON, Adeline
Centre de recherches Paul Pascal [CRPP]
Departement of Chemistry and Faculty of Pharmarcy
Centre de recherches Paul Pascal [CRPP]
Departement of Chemistry and Faculty of Pharmarcy
FAURE, Chrystel
Centre de recherches Paul Pascal [CRPP]
Chimie et Biologie des Membranes et des Nanoobjets [CBMN]
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Centre de recherches Paul Pascal [CRPP]
Chimie et Biologie des Membranes et des Nanoobjets [CBMN]
Language
en
Article de revue
This item was published in
Colloid and Polymer Science. 2012, vol. 290, p. pp. 1015-1022
Springer Verlag
English Abstract
This article describes a general method for the deposition of gold nanoparticles onto solid support based on the use of multilamellar vesicles (MLVs). Gold nanoparticles (nps) synthesized within lipid-based MLVs by UVor ...Read more >
This article describes a general method for the deposition of gold nanoparticles onto solid support based on the use of multilamellar vesicles (MLVs). Gold nanoparticles (nps) synthesized within lipid-based MLVs by UVor γ-irradiation were deposited onto TiO2 powder support. The organic phase from MLVs was removed by calcination leading to high dispersion of naked Au nanoparticles. The resulting particles were investigated using spectrometry, electron microscopy and XPS. The gold nanoparticles were stable and well-separated on the titania surface. It was found that the metal nanoparticles produced by radiolysis have smaller average size and narrower size distribution than those synthesized by photochemical route. After calcinations, the particles tended to enlarge to reach c.a. 18 nm. The gold loading on the titania support could be controlled by changing the gold salt concentration and the MLV-to-TiO2 weight ratio; values of Au-to-Ti ratio up to 44 % could be obtained.Read less <
English Keywords
Multilamellar vesicles
Gold nanoparticles
TiO2 powder
Supported catalyst
Photolysis
Radiolysis
Origin
Hal imported