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G. Khachatryan, K. Khachatryan, M. Fiedorowicz, A. Para

Formation of nanometals in dialdehyde starch matrix

Abstract: In this work, we report an environmentally benign ,,green,, method for the preparation of Au and Ag nanoparticles in dialdehyde starch matrix, using dialdehyde starch as the reducing and as the protecting agent. Dialdehyde starch (DAS) of degree of oxidation 9% was prepared from potato starch in the periodate oxidation reaction with electrochemical recovery of the oxidant. DAS/Ag and DAS/Au nanocomposites were characterized with UV/VIS and IR spectrometric techniques, Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). The absolute molecular weights, radii of gyration, Rg, and thermodynamic properties of obtained composites are also given.

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