Biosynthesis of NiFe2O4 Nanocomposites by Pomegranate Bark Extract

Koca F. D., Şahin B.

International Erciyes Agriculture, Animal & Food Sciences Conference, Kayseri, Turkey, 24 April 2019 - 27 April 2020, pp.159

  • Publication Type: Conference Paper / Summary Text
  • City: Kayseri
  • Country: Turkey
  • Page Numbers: pp.159
  • Erciyes University Affiliated: Yes


With the development of technology, scientists have focused on nanomaterials because of their unique properties. In order to increase the application efficiency of metallic NPs, studies on the modification of meticular NPs (such as the synthesis of organic-inorganic, bimetallic nanocomposites and chitosan coating) have accelerated. As an alternative to the costly, toxic and high energy requirements of traditional synthesis methods, the use of biomolecules as a reducing and coating agent is a trend topic. In this study, NiFe2O4 nanocomposites (NK) were synthesized for the first time with pomegranate bark extract. Briefly, 10 g pomegranate bark was holded at 80 oC for 1 hour and filtrated by using Whatman No 1 filter paper. While mixing Ni(NO3)2.6H2O (33.3 ml, 0.1 M) and Fe(NO3)2.9H2O (66.6 ml, 0.1 M) solutions, 50 ml pomegranate peel extract was added and the mixture was continued for 24 hours in the dark. At the end of the reaction, the solution was centrifuged (30 minutes at 5000 rpm), distilled water was added to the pellet and washed by centrifugation under the same conditions. The precipitate formed was calcined at 300 oC in the ash furnace for approximately 2 hours, and the powder obtained was used in NP characterization studies. It was determined by SEM analysis that NiFe2O4 NK has a spherical structure with aggregation and size of about 75 nm. According to dynamic light scattering (DLS), NiFe2O4 NK in the solution have 405 nm effective diameter. The surface charge of NP was recorded as -11.1 mV. The functional groups were detected by Fourier Transform Infrared Spectroscopy (FT-IR) analysis. As a result, biological synthesis of NiFe2O4 NK was carried out inexpensive and one step with pomegranate peel extract. It is thought that the study will shed light on the biological synthesis and evaluation of potential applications of NK.