Novel Nano-Fe₂O₃-Co₃O₄ Modified Dolomite and Its Use as Highly Efficient Catalyst in the Ozonation of Ammonium Solution

Figure 1

XRD patterns of dolomite (raw ores) (a); activated treated dolomite (b); Fe₂O₃/dolomite (c); Fe₂O₃-Co₃O₄/dolomite (d).