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Byungkwon Lim, Yujie Xiong and Younan Xia A Water-Based Synthesis of Octahedral, Decahedral, and Icosahedral Pd Nanocrystals Angewandte Chemie International Edition 46

Version of Record online: 30 OCT 2007 | DOI: 10.1002/anie.200703755

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Shapes from water: Pd nanocrystals with controllable shapes are synthesized by reducing a Pd salt with citric acid in aqueous solution. Citric acid favors the formation of octahedra, icosahedra, or decahedra (see picture) owing to its strong binding to the {111} facets of Pd. Shape control of these nanocrystals is readily accomplished by adjusting the amounts of Na2PdCl4 precursor and citric acid added to the reaction mixture.

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