摘要：An efficient adsorbent, nano Uio-66-NH_2 MOF, for enhanced removal of fluoride from aqueous solution was successfully synthesized. The adsorbent was characterized by SEM and FT-IR. The fluoride adsorption on Uio-66-NH_2 in water was rapid in beginning followed by a slower process, and finial removal rate was 90.4% when time elapsed only; adsorption kinetics was well described by the pseudo second-order kinetics model. The adsorption capacity of the adsorbent by Langmuir model was 26.53 mg/g at pH 6.5. Filtration experiments showed that nano Uio-66-NH_2 filtration layer could efficiently remove fluoride from water, and the removal rate reached up to 96.6%. Electrostatic attraction between Uio-66-NH_2 and fluoride should be the mechanism of fluoride adsorption by Uio-66-NH_2.
