Adsorption of fluoride by aligned carbon nanotubes supported ceria nanoparticles

摘要

Ceria nanoparticles supported on aligned carbon nanotubes (CeO2/ACNTs), a novel adsorbent for fluoride from drinking water, were prepared by chemical reaction of CeCh with NaOH on aligned carbon nanotube solution and subsequent heat treatment. The best fluoride adsorption effect of CeCVACNTs occurs at pH 4.0 ~ 9.0. The largest adsorption capacity of CeOj/ACNTs reaches 33.7 mg g~-1 at an equilibrium fluoride concentration of 18.0 mg I~-1 at pH 7.0. The experiment results suggest that CeOi/ACNTs have great potential applications in environmental protection.