Inner value: A new high-concentration synthesis of Pt nanodendrite employs Au-seed-mediated growth inside a hollow silica nanosphere (see picture). The resulting material is substantially more active than commercial Pt black in the oxygen reduction reaction. Pt nanodendrite colloid with tunable dispersity as well as hybrid nanocrystals of various metals were also fabricated by the procedure.
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Yeo et al. (2010) studied this question.
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