Biosynthesis and characterization of zinc ferrite (ZnFe2O4) via Antidesma bunius L. fruit extract

Abstract

Biosynthesis of ZnFe2O4 via Antidesma bunius L fruit extract has been carried out. In this synthesis, Zn(NO3)2.6H2O and Fe(NO3)3.9H2O were used which act as precursors of Zn2+ and Fe3+ ions with a coefficient ratio of 1:2 using the coprecipitation method with variations in calcination temperatures of 500 °C, 600 °C and 700 °C. The precursor used is NaOH. XRD data showed that there are diffraction peaks of ZnFe2O4 in all samples but at a calcination temperature of 700,°C the diffraction peaks of ZnFe2O4 with high intensity are more visible at 2Θ = 31.78°, 34.42°, 35.2°, 36.22°, 56.61° this peak corresponds to the peak ZnFe2O4 diffraction (JCPDS 22-1012) in addition there is also a peak of ZnO at 2Θ = 31.7°, 34.4°, 36.2°, 47.5°, 62.8°, 66.5° and 69.2° (JCPDS 36-1451). FTIR analysis showed that the Zn-O stretching group was at wave numbers 837 cm-1, 870 cm-1, 1058 cm-1, 1065 cm-1, and 1350 cm-1. The Zn-O-Zn strain is found at wave numbers 1350 cm-1, 1633 cm-1, and 1634 cm-1, respectively. The appearance of these bonding groups proves that the synthesis of ZnFe2O4 has been formed.