Fig. 3

a FTIR chart of fungal filtrate (a) and the biosynthesized magnesium oxide b obtained by harnessing the exometabolites of Aspergillus japonicus, b X-ray diffraction pattern, c Transmission electron microscope of MgO-nps@Aj, d Histogram illustrating the nanoparticle size distribution developed from TEM picture using Image J software. e SEM images of MgO-nps@Aj, (f) elemental analysis by EDX