Adsorption and Removal of Antibiotic Pollutants using CuO−Co3O4 Co-modified Porous Boron Nitride Fibers in Aqueous Solution

Graphical A bimetallic oxide co-modified CuO−Co 3 O 4 /P−BNFs material is reported in this work, which significantly improved the adsorption performance on TCs, and the removal rate of TCs was more than twice that of P−BNFs under the same conditions. The presence of antibiotic contaminants in aqueous environment already poses significant risks to ecological sustainability, biodiversity and human public health and safety. Therefore, it is urgent to develop practical water pollution control technologies and new materials. Here, we prepared CuO−Co 3 O 4 co-modified porous boron nitride fibers (P−BNFs) for the adsorption and removal of tetracycline antibiotics (TCs) in aqueous environment. The prepared adsorbents were characterized by XRD, FTIR, XPS, SEM, TEM and BET, and the adsorption behavior was explored by batch experiments. The results show that the removal percentage for doxycycline (DC) reaches 98.68 %, which was much higher than that of P−BNFs, and the modification results of P−BNFs with CuO or Co 3 O 4 alone. After five regeneration cycles, the removal rate of DC by CuO−Co 3 O 4 /P−BNFs was still as high as 89.33 %. This is promising and indicates that the prepared CuO−Co 3 O 4 /P−BNFs adsorbent has good renewable recycling performance and practical application prospects.