Ligand-stabilized giant palladium clusters: promising candidates in heterogeneous catalysis

Metal Clusters and Colloids

“…Following the full-shell cluster terminology these clusters correspond to five-, seven-, and eight-shell clusters having 2.2, 3.0, and 3.6 nm cores of 561, 1415, and 2057 face centered cubic (fcc) packed atoms. [19] These atom numbers atoms are, of course, idealized values. Fuchs in the polymer research lab at BASF AG, she moved to the University of Münster to continue her research work on the preparation of ultrathin organic films and their characterization using scanning probe microscopy.…”

In Quest of a Systematic Framework for Unifying and Defining Nanoscience

“…As noted by Schmidt, they are substantially more robust when ligand stabilized (Schmid 1990). Furthermore, they can be prepared routinely as monodisperse modules by chemical means (Vargaftik et al 1991;Schmid et al 1993Schmid et al , 2000Rao 1994;Teranishi et al 1997). Wilcoxon et al (2000) have shown that these closed shell, coreshell metal nanocluster assemblies can be isolated, analyzed, and characterized using high-pressure liquid chromatography (HPLC) methodologies.…”

“…Metal nanocrystals with magic numbers of atoms, namely, 13, 55, 309, 561, and 1,415 corresponding to 1, 2, 3, 4, 5, and 7 closed shells have been prepared by chemical means (Vargaftik et al 1991;Schmid et al 1993Schmid et al , 2000Rao 1994;Teranishi et al 1997).…”

Characterization of nanosized nickel prepared by surface reactions of Ni-?-organyl complexes on silica: An electron paramagnetic and ferromagnetic resonance study

“…To prepare metal particles in a well controlled way, attempts have been made to deposit them on highsurface-area supports (1) by decomposition of metal carbonyls, 1 (2) by surface reactions of organometallic complexes, 2,3 (3) by adsorption of dispersed metal clusters, 4,5 (4) by metal vapour condensation techniques 6 and (5) by a two-step variant of the normal sequence of chemical operations to produce a metal/support catalyst, i.e. impregnation (precipitation, ion exchange), oxidation and reduction 7 .…”