Porous Fe2O3 microcubes derived from metal organic frameworks for efficient elimination of organic pollutants and heavy metal ions

•The P-Fe2O3 present the outstanding removal capacity for heavy metal ions and organic pollutants.•The adsorption of target ions on P-Fe2O3 mainly depended on chemical binding for cations.•The mechanism of adsorption was ion exchange and electrostatic attraction for anion.•The organic pollution had been successfully adsorbed onto P-Fe2O3 via surface complexation.