Anomalous aggregation growth of palladium nanosphere with SPR band in visible range
Xiao Cong-Wen(肖从文)a), Shen Cheng-Min(申承民)a), Xu Zhi-Chuan(徐梽川)b), Yang Tian-Zhong(杨天中)a), and Gao Hong-Jun(高鸿钧)a)†
a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; b 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.
Received: 12 October 2007
Revised: 25 October 2007
Accepted manuscript online:
PACS:
81.16.-c
(Methods of micro- and nanofabrication and processing)
(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
Fund: Project supported by the National
Natural Science Foundation of China (Grant Nos 60571045 and 60328102)
and the National `973' Project of China.
Cite this article:
Xiao Cong-Wen(肖从文), Shen Cheng-Min(申承民), Xu Zhi-Chuan(徐梽川), Yang Tian-Zhong(杨天中), and Gao Hong-Jun(高鸿钧) Anomalous aggregation growth of palladium nanosphere with SPR band in visible range 2008 Chin. Phys. B 17 2066
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