Synthesis and Characterization of New Ferrite-Lignin Hybrids

Author:

Spiridon Iuliana,Dascalu Ioan-Andrei,Coroaba AdinaORCID,Apostol Irina,Palamaru Mircea Nicolae,Iordan Alexandra Raluca,Borhan Adrian Iulian

Abstract

The paper presents the synthesis and characterization of new cobalt ferrite-lignin hybrids. The hybrids were obtained through the combustion of cobalt nitrate and ferric nitrate, two kinds of lignin being used as combustion agents. The temperatures of calcination were 500 °C and 900 °C, respectively. The hybrids were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX), and X-ray photoelectron spectroscopy (XPS). The magnetic properties were also assessed by vibrating sample magnetometer system (VSM). This facile synthesis method made it possible to obtain cobalt ferrite-lignin hybrids with a spinel structure. Their particle sizes and crystallite sizes have increased with an increment in the calcination temperature. A different occupancy of cations at octahedral and tetrahedral sites also occurred upon the increase in temperature. The hybrids comprising organic lignin presented the best magnetic properties.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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