| 초록 |
Noble metal nanocrystals with controlled sizes and shapes have received great interest in recent years due to the strong correlations between the size and shape of a nanocrystals and its electronic, optical, magnetic and catalytic properties. The interest has also been augmented by the technological applications of these nanocrystals in various areas including catalysis, sensing, imaging, and biomedicine. The various research groups have produced Ag nanostructures by natural reducing agents like tea, coffee, various plant extracts and polysaccharides. But the yield or product they obtained was polydispersed which is not feasible for commercial purpose. we wanted to synthesize the monodispersed shape controlled Ag nanocrystals by using natural reducing agents and trace amounts of capping agents like PVP, citrate etc which will have no harm to environment in negligible amounts . The samples were charicterized by the means of TEM, SEM, PSA, UV-VIS-NIR spectroscopy and XRD. |
