An organometallic compound is the key intermediate during the formation of colloidal Pt particles from [Pt(acac)2] and Al(CH3)3. Additional studies confirm the formation of stable Pt colloids with an average diameter of 1.2 nm, which are stabilized by organoaluminum components (see scheme). Without the stabilizer a Pt nanopowder with a particle size of 1.4 nm is isolated.
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Angermund et al. (2002) studied this question.
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