In this study, we developed an efficient and reusable sono-Fenton system with Fe@Fe2O3 core−shell nanowires as the iron reagent. Similar to our previous sono-Fenton system working at pH = 2, this system could also much more effectively degrade rhodamine B than those with Fe2+, Fe2+/Fe2O3, or commercial zerovalent iron particles as the iron reagents at neutral pH. The nature of the Fe@Fe2O3 nanowire Fenton iron reagent was examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Fourie...
