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Abstract
Biosynthesis of ZnFe
2
O
4
via
Antidesma bunius
L fruit extract has been carried out. In this synthesis, Zn(NO
3)2
.6H
2
O and Fe(NO
3)3
.9H
2
O were used which act as precursors of Zn
2
+ and Fe
3
+ 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 ZnFe
2
O
4
in all samples but at a calcination temperature of 700,°C the diffraction peaks of ZnFe
2
O
4
with high intensity are more visible at 2Θ = 31.78°, 34.42°, 35.2°, 36.22°, 56.61° this peak corresponds to the peak ZnFe
2
O
4
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 ZnFe
2
O
4
has been formed.