Magnetic mesoporous silica hybrid nanoparticles for highly selective boron adsorption

摘要: Novel core–shell magnetic mesoporous silica hybrid nanoparticles were synthesized and functionalized further with a glycidol reagent to produce boron-specific cis-diol, chelating functional derivatives. The resulting found be better alternative the existing boron adsorbents that had been modified large molecular weight saccharide moieties polymer functionalities. surface area, diameter, pore size, saturation magnetization of 629 m2 g−1, 200–300 nm, 2.5 33.25 emu respectively. glycidol-modified cis-diol groups showed high adsorption affinity excellent selectivity towards in an aqueous solution, even presence competitive metal ions (Ni2+, Cu2+, Cr2+ Fe2+) sulphates chlorides Na+, K+, Ca2+ Mg2+ ions. Adsorption equilibrium could established within 15–20 min, level was 2.37 mmol which is much higher than values previously reported for other adsorbent materials. approximately 97% removal capacity from H3BO3 solution (100 mg L−1), used particles separated easily suspensions by external field. repeatedly after simple acid treatment (0.1 M HCl) regenerated ammonia (3% NH3·H2O).