摘要 : A simple one-pot solution method was reported for the synthesis of metallic nickel nanostructures assembled from hexagonal nanoplatelets. The process involved the reduction of nickelous salt with hydrdzine in ammonia solution, and... 展开 A simple one-pot solution method was reported for the synthesis of metallic nickel nanostructures assembled from hexagonal nanoplatelets. The process involved the reduction of nickelous salt with hydrdzine in ammonia solution, and the reaction proceeded without the use of surfactants or external magnetic forces. By properly adjusting the experimental parameters, we realized the anisotropic growth of face-centered-cubic (fcc) nickel into hexagonal nanoplatelets and their simultaneous assembly into flowery architectures. The cooperative effects of the ammonia complexing agent, a proper reaction rate, inherent magnetic interactions, and assembly entropy were considered the key factors driving the formation of the special assembly nanostructures on the basis of a series of contrast experiments. (C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) 收起