Bromate was efficiently removed by core-shell Fe@Fe2O3 nanowires.
Surface bound ferrous ions of core-shell Fe@Fe2O3 nanowires promoted the BrO3− removal effectively.
class="glyphImg imgLazyJSB">O2− and H2O2 favored the bromate removal with core-shell Fe@Fe2O3 nanowires, but class="glyphImg imgLazyJSB">OH inhibited.