Removal of antimonate ions and simultaneous formation of a brandholzite-like compound from magnesium-aluminum oxide

► Mg-Al oxide was obtained by thermal decomposition of Mg-Al layered double hydroxide. ► Mg-Al oxide could remove Sb(OH)6- (Sb(V)) in solution. ► It rehydrated and combined with Sb(V) to construct a brandholzite-like structure.