Synergistic effect of carboxyl and sulfate groups for effective removal of radioactive strontium ion in a Zr-metal-organic framework
Journal: Water Science & Technology
Year: 2021

Rapid removal of radioactive strontium from nuclear wastewater is of great significance for environmental safety and human health. This work reports the effective adsorption of strontium ion in a stable dual-group metal-organic framework, Zr<sub>6</sub>(OH)<sub>14</sub>(BDC-(COOH)<sub>2</sub>)<sub>4</sub>(SO<sub>4</sub>)<sub>0.75</sub> (Zr-BDC-COOH-SO<sub>4</sub>), which contains strontium-chelating groups (-COOH and SO<sub>4</sub>) and a strongly ionizable group (-COOH). Zr-BDC-COOH-SO<sub>4</s