Reference : Mesoscale Characterization of Nanoparticles Distribution Using X-Ray Scattering
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/184965
Mesoscale Characterization of Nanoparticles Distribution Using X-Ray Scattering
English
Gommes, Cédric mailto [Université de Liège > Département de chimie appliquée > Département de chimie appliquée >]
Prieto, Gonzalo []
Zecevic, Jovana []
Vanhalle, Maja []
Goderis, Bart []
de Jong, Krijn []
de Jongh, Petra [Universiteit Utrecht > > > >]
2015
Angewandte Chemie International Edition
Wiley-VCH
54
11804-11808
Yes (verified by ORBi)
International
1433-7851
1521-3773
Weinheim
Germany
[en] Small-angle scattering ; porous materials ; solid catalysts
[en] The properties of many functional materials depend critically on the spatial distribution of an active phase within a matrix or support material. In the case of solid catalysts, controlling the spatial distribution of metal (oxide) nanoparticles at the mesoscopic scale offers new strategies to tune their performance and enhance their lifetimes. However, such advanced control requires the development of suitable methods to characterize the spatial distribution of nanoparticles at the mesoscopic scale. Currently electron microscopy and more specifically electron tomography is close to being the only option. Here, we show how the background in x-ray scattering patterns can be analyzed to quantitatively access the distribution of metal nanoparticles within support materials displaying hierarchical porosity. Our approach is illustrated for copper catalysts supported on meso- and micro-porous silica, which display distinctly different metal spatial distributions. Results derived from the modeling of x-ray scattering patterns are in excellent agreement with electron tomography observations, while the amount of material being characterized at once is enhanced by twelve orders of magnitude. Our strategy opens unprecedented prospects to understand structure-property relationships and to guide the synthesis of advanced supported catalysts as well as a wide array of other functional nanomaterials.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/184965
10.1002/anie.201505359
http://onlinelibrary.wiley.com/doi/10.1002/anie.201505359/abstract
This is the pre-peer reviewed version of the following article: "Mesoscale Characterization of Nanoparticles Distribution Using X-ray Scattering", which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/anie.201505359/abstract

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