3. Results and discussion
3.1. Characterization of the MgHAp/Fe3O4
Fig. 1(a) showed the SEM image of the as-synthesized MgHAp/Fe3O4
nanosphere which had an average diameter of 50 nm. The size distributions
and average particles size of MgHAp/Fe3O4 can be seen from
Fig. 1(e), which are calculated by the software of Nano Measurer 1.2.
The average size of the MgHAp/Fe3O4 is 50 nm. Spherical MgHAp/
Fe3O4 is at the nano-scale and good to achieve adsorption. The main element
including magnesium, iron, oxygen and phosphorus gave an obvious
peak in the element analysis diagram of MgHAp/Fe3O4 (Fig. 1(b)),
which was consistent with the theoretical construct and confirmed that
the material was synthesized successfully.