Composite materials based on Ag nanoparticles in situ synthesized on the vaterite porous matrices.
作者： Roman Kamyshinsky , Irina Marchenko , Bogdan Parakhonskiy , Alexey Yashchenok , Yury Chesnokov
关键词: Vaterite 、 Silver nanoparticle 、 Colloidal gold 、 Porosity 、 Composite material 、 Transmission electron microscopy 、 Raman spectroscopy 、 Materials science 、 Microanalysis 、 Microstructure
摘要: We have designed sensors based on Ag nanoparticles synthesized in situ the vaterite beads. In this article we demonstrate an approach to produce size controllable spherical and elliptical particles discuss time-dependent synthesis its potential effect surface-enhanced Raman scattering. The time dependent silver reduction inorganic porous allows regulate number of nanoparticles. It is shown that irregular surface high porosity large amount (surface filling factor) are critical parameters increase SERS signal 104 times. Such composites a huge medical applications; soon they provide opportunity study intracellular processes vivo. detailed characterization microstructure these was studied by scanning transmission electron microscopy, including 3D visualization energy dispersive x-ray microanalysis.
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