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- Title
Fabrication of gold nanoparticles with different morphologies in HEPES buffer.
- Authors
Chen, Rong; Wu, Jiliang; Li, Hui; Cheng, Gang; Lu, Zhong; Che, Chi-Ming
- Abstract
Gold nanoparticles with different morphologies, such as spindle, octahedron, and decahedron were obtained by using different molar ratios of HAuCl4/HEPES in the presence and absence of surfactants at room temperature. These nanoparticles were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), scanning electron microcopy (SEM), energy-dispersive X-rays analysis (EDX), and selected area electron diffraction (SAED). The kinetics of the formation of gold nanoparticles in HEPES buffer was studied by UV-visible spectrophotometer. The formation of gold nanoparticles was strongly dependent on the concentration of HEPES and pH value. The surfactants play a crucial role in the size and shape controlled synthesis of gold nanoparticles.
- Publication
Rare Metals, 2010, Vol 29, Issue 2, p180
- ISSN
1001-0521
- Publication type
Article
- DOI
10.1007/s12598-010-0031-5