BIMETALLIC AgCu COMPOSITES AND THEIR CONJUGATES WITH QUERCETIN: SYNTHESIS AND ELECTRONIC STRUCTURE

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Abstract

New hybrid materials based on Ag, Cu, AgCu nanoparticles and their conjugates with quercetin were obtained using an environmentally friendly method of metal-vapor synthesis (MVS). The composition and electronic state of the nanocomposites were studied by XPS, PXRD and SEM/EDX. It was found that modification of metals with flavonoid leads to stabilization of smaller particles in the conjugate compared to metal powders. PXRD analysis showed that the average crystallite size of metals upon introduction of quercetin decreases from 4.1 to 3.6 nm for Ag and from 8.7 to 4.8 nm for Cu. According to XPS data for bimetals and their conjugates, silver is in the ground state Ag0, and the states of Ag+ and acetate silver are present in small amounts. Copper is in the states of Cu0, Cu+, Cu2+. Bimetallic nanoparticles are a solid solution with a disordered structure and Ag–Cu, Ag–O–Cu and Ag–O–Cu–O– bonds.

About the authors

N. S Melekhina

A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences

Email: alexandervasilkov@yandex.ru
Moscow, Russia

A. V Naumkin

A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences

Email: alexandervasilkov@yandex.ru
Moscow, Russia

A. S Golub

A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences

Email: alexandervasilkov@yandex.ru
Moscow, Russia

P. R Voloshina

A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences

Author for correspondence.
Email: alexandervasilkov@yandex.ru
Moscow, Russia

A. Yu Vasil'kov

A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences

Email: alexandervasilkov@yandex.ru
Moscow, Russia

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