Synthesis of High-Yield Gold Nanoplates: Fast Growth Assistant with Binary Surfactants
| Autor: | Changshun Wang, Caixia Kan, Xiangfu Wang, Xiaoling Zeng, Hongchen Li, Daning Shi, Jie-Jun Zhu |
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| Jazyk: | angličtina |
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Article Subject Surface plasmon technology industry and agriculture Crystal growth Nanotechnology chemistry.chemical_compound chemistry Chemical engineering Bromide Transmission electron microscopy Yield (chemistry) lcsh:Technology (General) lcsh:T1-995 General Materials Science Nanometre Absorption (chemistry) Ethylene glycol |
| Zdroj: | Journal of Nanomaterials, Vol 2010 (2010) |
| ISSN: | 1687-4129 1687-4110 |
| Popis: | A novel and simple chemical method was developed to fastly synthesize Au nanoplates with size of micrometers and tens of nanometers in thickness. The synthesis was carried out within 30 minutes by thermal reduction of precursors (HAuCl4) in the presence of binary surfactants Poly(vinylpyrrolidone) (PVP) and cetyltrimethylammonium bromide (CTAB) in ethylene glycol (EG) solution. The presence and concentration of PVP and CTAB in the growth solution play important roles in the fast formation of Au nanoplates. The obtained Au nanoplates exhibit strong surface plasmon absorption in the near-infrared region (NIR), displaying a considerable dependence on the shape and size. Characterizations by Transmission electron microscope and X-ray diffraction indicated that the nanoplates are single crystals with (111) planes as two basal surfaces. Explanations for the nuclei formation and crystal growth behind anisotropic Au nanoplates were proposed. |
| Databáze: | OpenAIRE |
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