592464.fig.007a
(a)
592464.fig.007b
(b)
592464.fig.007c
(c)
592464.fig.007d
(d)
Figure 7: SEM images showing the CVD products synthesised using the (a) (Fe3O4)1(MgO)9, (b) (Fe3O4)1.75(MgO)8.25, (c) (Fe3O4)2.5(MgO)7.5, and (d) (Fe3O4)3.25(MgO)6.75 catalysts.