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Journal of Nanotechnology
Volume 2017, Article ID 7607658, 9 pages
https://doi.org/10.1155/2017/7607658
Research Article

Magnetic Cobalt and Cobalt Oxide Nanoparticles in Hyperbranched Polyester Polyol Matrix

Department of Inorganic Chemistry, Kazan Federal University, 18 Kremlyovskaya St., Kazan 420008, Russia

Correspondence should be addressed to M. P. Kutyreva; ur.liam@averytukm

Received 28 May 2017; Accepted 16 July 2017; Published 20 August 2017

Academic Editor: Enkeleda Dervishi

Copyright © 2017 O. I. Medvedeva et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A series of cobalt (Co) and its oxides based nanoparticles were synthesized by using hyperbranched polyester polyol Boltorn H20 as a platform and sodium borohydride as a reducing agent. UV, FT-IR, XRD, NTA, and TEM methods were employed to obtain physicochemical characteristics of the products. The average diameter of Co nanoparticles was approximately  nm. Their magnetic properties, including hysteresis loop, field-cooled, and zero field-cooled curves were investigated. The nanoparticles exhibit superparamagnetism at room temperature, accompanied by magnetic hysteresis below the blocking temperature.