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Anomalous aggregation growth of palladium nanosphere with SPR band in visible range
Authors:Xiao Cong-Wen  Shen Cheng-Min  Xu Zhi-Chuan  Yang Tian-Zhong and Gao Hong-Jun
Institution:Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; Department of Chemistry, Lanzhou University, Lanzhou 730000, China
Abstract:The morphology and properties of nanostructures are significantly influenced by the chemical coordination during their growth procedure. Using small molecule N-vinyl pyrolidone as stabilizer, this paper introduces a new strategy for synthesis of palladium nanospheres, which has a novel surface plasmon resonance band in the visible range. An aggregation growth mode was observed in the growth process. More specifically, the growth rate increases with increasing concentration of stabilizer. The absorption in visible region suggests new optical applications for these Pd nanospheres, such as photocatalysis, photothermal heating and surface enhanced Raman scattering.
Keywords:palladium  nanosphere  aggregation growth  surface plasmon resonance
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