Figure 3
(a) XPS spectra of A-ATP@Fe3O4, high-resolution XPS spectra of (b) Fe2p, (c)O1s. (d) Magnetization curves of P-ATP@Fe3O4 and A-ATP@Fe3O4 nanocomposites and Fe3O4 serves as control. The inset pattern is a photograph of the magnetic separation, which shows that the nanoparticles can be separated easily with a magnet.
