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Abstract
It is an urgent topic for public health and environmental protection to remove Cr(VI) from wastewater effectively and conveniently. Herein, we fabricate the novel hybrid magnetic material HPU-13@Fe3O4 (HPU-13 = {[Cu3(L)2]·OH·2CH3CH2OH·10H2O}n; HL = 2-(5-pyridin-4-yl-2H-[1,2,4]triazol-3-yl)pyrimidine), which shows excellent Cr(VI) removal efficiency and is easily employed as a reusable absorbent. The maximum capacities of Cr2O72– and CrO42– adsorbed on HPU-13@Fe3O4 were 398.41 and 471.69 mg/g, respectively, larger than those of reported MOFs used in Cr2O72– and CrO42– adsorption. Adsorption mechanism studies confirmed that the synergistic reaction of Cr(VI) reduction and adsorption was responsible for the high removal efficiency. The above evidence proved that HPU-13@Fe3O4 has the potential functional ability to decontaminate Cr(VI) polluted water systems.
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