Figure 2
From: Corn-like, recoverable γ-Fe2O3@SiO2@TiO2 photocatalyst induced by magnetic dipole interactions
(a) A full-scan XPS spectra of γ-Fe2O3@SiO2@TiO2 heterostructure, (b,c) The Fe 2p core-level XPS spectra for Fe3O4 microspheres and γ-Fe2O3@SiO2@TiO2 heterostructure.
