Highly efficient antibacterial adsorbent for recovering uranium from seawater based on molecular structure design of PCN-222 post-engineering

Hierarchical Self-Assembled Polyimide Microspheres Functionalized with Amidoxime Groups for Uranium-Containing Wastewater Remediation

“…Influences of pH and Hydrophilicity. Uranium species differ under various pH values (Figure S5a), 39 so we investigated the relationship between pH and adsorption capacity. At different pH values, 10 mg of the adsorbent was dispersed into 50 mL of 100 mg L −1 uranium solution for 6 h at 298 K, and the adsorption capacity at different pH values was studied (for details, see Supporting Information S3.1).…”

Reticular materials for wastewater treatment

“…53 The highest U( vi ) adsorption capabilities of PCN-222-AO and PCN-222-CN, respectively, were found to be 320.1 mg g −1 and 432.7 mg g −1 . 54…”

“…53 The highest U(VI) adsorption capabilities of PCN-222-AO and PCN-222-CN, respectively, were found to be 320.1 mg g −1 and 432.7 mg g −1 . 54 A sulfur-rich functional group, such as -SH or -SO 3 H, can be attached to a framework with side chains containing alkene or alkyne through the thiol-ene click reaction, facilitated by catalysts. COF-SH-1 and COF-SH-2 demonstrated 96.4% and 99.6% adsorption efficiencies for the so-so interaction between Scontaining ligands and Hg 2+ .…”

Uranium and lithium extraction from seawater: challenges and opportunities for a sustainable energy future

“…59,60,63 From a practical perspective, on top of displaying rapid adsorption kinetics and high adsorption capacity, the adsorptive materials should possess high desorption efficiencies (>90%) as well as structural stability for recyclability (e.g., tolerance to common acids and bases). 61,62 To impart antibiofouling properties to the adsorbents, post-modication reactions are performed to introduce antibacterial compounds (e.g., neomycin) onto the adsorbents to attenuate long-term performance degradation due to marine biofouling. Also, the coated compounds should be tightly crosslinked onto the adsorbents so that they are not easily worn away aer multiple cycles of adsorption-desorption.…”

“…, tolerance to common acids and bases). 61,62 To impart anti-biofouling properties to the adsorbents, post-modification reactions are performed to introduce antibacterial compounds ( e.g. , neomycin) onto the adsorbents to attenuate long-term performance degradation due to marine biofouling.…”