Magnetic Zr-Based Metal-Organic Frameworks: A Highly Efficient Au (III) Trapper for Gold Recycling.

ABSTRACT: In this work, the magnetic Zr-based MOF composites with excellent retrievability were prepared using Fe₃O₄@SiO₂ as the core and UiO-66-NH₂ as the shell. Fe₃O₄@SiO₂ core could introduce mesopores and result in capillary condensation in MOF composites, which aggravated with the dosage of Fe₃O₄@SiO₂. The as-synthesized MOF composites could be rapidly retrieved from aqueous solution via magnetic separation in 10 seconds. pH imposed an important effect on Au (III) adsorption by governing the ion exchange and electrostatic interaction between Au (III) anions and adsorbents, and the optimal adsorption happened at pH 7. The adsorption process fitted well with the pseudo-second order kineti

SUBMITTER: Chang Z 

PROVIDER: S-EPMC9572273 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature