Abstract
Bimetallic clusters of composition Pd2Mo2(η5-C5H5)2(μ3-CO)2(μ2-CO)4(PR3)2 (R = ethyl or phenyl) were incorporated by impregnation from solution into two different silica matrices, amorphous xerogels and ordered SBA-15, and a study of their thermal decomposition under a reducing atmosphere is reported. With both matrices, a suitable thermal treatment afforded nanoparticles of a new bimetallic phosphide. Although nanoparticles of composition Pd x Mo y P, isostructural with Mo3P, were formed in both matrices, they were more uniformly distributed in the SBA-15 framework and showed a narrower size distribution. The samples have been characterized by powder XRD, chemical analysis, FT-IR spectroscopy, TEM and electron tomography (3D TEM).
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We are grateful to the Région Alsace (Doctoral grant to S. G.-V.), the Centre National de la Recherche Scientifique and the Ministère de la Recherche for support.
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Below is the link to the electronic supplementary material. Chemical nanoprobe analysis by energy-dispersive spectroscopy of X-rays (EDSX) of sample 1a, 1b, 2a and 2b are available together with a movie on the 3D tomography representation
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Grosshans-Vièles, S., Croizat, P., Paillaud, JL. et al. Molecular Clusters in Mesoporous Materials as Precursors to Nanoparticles of a New Lacunar Ternary Compound Pd x Mo y P. J Clust Sci 19, 73–88 (2008). https://doi.org/10.1007/s10876-007-0171-4
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DOI: https://doi.org/10.1007/s10876-007-0171-4