Abstract
A new preparation method for nanocomposites is proposed in which nanometer-scale nickel particles are precipitated homogeneously on the magnesia surface. Our approach is based on a conventional method that uses a reaction of difference in oxide stability in reductive atmosphere. We found that aluminum doping of the material precursor enabled preferential precipitation on the oxide substrate. We also have applied the preparation method for the nickel-copper/magnesia system. An addition of copper was effective for reducing the particle diameter. We found that morphology created by the method could be controlled by varying precursor composition.
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