Journal
CHEMISTRY OF MATERIALS
Volume 17, Issue 25, Pages 6473-6478Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm051588h
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A family of nanocomposites formed by intercalation of negatively charged Ni-based nanoparticles in Mg/Al layered double hydroxide (LDH) has been prepared by following the anion exchange route. The composites differ by the amount of loaded Ni entities. Suspensions of Ni nanoparticles have been priorily prepared by controlled hydroxylation of Ni2+ cations in the presence of citrate complexing ions. Intercalated Ni complex colloids exhibit the same behavior in the different composites upon reduction. The nanocomposite route leads after reduction at 1023 K to controlled amounts of metal Ni nanoparticles presenting a similar mean size of 5 nm and a high degree of dispersion on a magnesium/aluminum oxide matrix.
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