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γ-Radiation Synthesis of Nano/Micrometer-Scale Single-Crystalline Large Gold Plates

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An original solution phase approach was developed for the synthesis of single-crystal Au nanoprims with anisotropic structure of triangular, hexagonal and truncated triangular, nanometre or micrometer scale, and nanometer thickness. It has been confirmed that the Fe3O4 magnetite nanoparticles and (3-aminopropyl) triethoxysilane (APTES) coated on the magnetite nanoparticles play important roles in the formation of Au nanoplates. Significantly, such Au nanoplates exhibit remarkable optical properties, both the dipole plasmon resonance and the quadrupole plasmon resonance were observed. And the selected area electron diffraction (SAED) pattern shows the nanoplates obtained were single crystals with (111) plans as two basal surfaces. The growth of gold nanoplates in the solution with time had been monitored by microscopic and spectroscopic techniques to allow the detection of several key intermediates in the growth process. To our knowledge, this is the first report on the production of large planar gold nanostructures with gamma irradiation in combination of another nanocomposite materials (APTES-Fe3O4).

Document Type: Research Article


Publication date: 2012-04-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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