Preparation of Halloysite/Ag2O Nanomaterials and Their Performance for Iodide Adsorption

Halloysite/Ag2O (Hal/Ag2O) nanomaterials were prepared by growing Ag2O nanoparticles on the surface of nanotubular halloysite using silver nitrate solution under alkaline conditions. The characterized X-ray diffraction (XRD), transmission electron microscopy (TEM), and N2 adsorption. Good dispersion with average sizes 6.07 ± 2.5 nm 8.04 3.8 was achieved in when different concentrations alkali. nanomaterial 6.36% (Hal/Ag2O-2) exhibited rapid adsorption to iodide (I?); equilibrium can be reached within 100 min. capacity I? Hal/Ag2O-2 is 57.5 mg/g, which more than 143 times higher that halloysite. also showed a better per unit mass due less coaggregation pure nanoparticles. Importantly, high selectivity for I?, its removal efficiency hardly affected coexistence Cl?, Br?, or SO42?, as well initial pH solution. With an excellent performance, Hal/Ag2O could new efficient adsorbent capable radioactive from aqueous