Bismuth nanoparticles have been produced by the oxidation of the Zintl polyanion Bi4 2− in ethylenediamine solutions. TEM images indicate that the crystalline nanoparticles produced in the presence of polyethylene glycol are in the size range of ∼20 nm. The oxidation of the polyanion by 2‐octanol produce larger nanoparticles of bismuth (∼50 nm).
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Lake et al. (2006) studied this question.
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