Ecocompatible Halloysite/Cucurbit8uril Hybrid as Efficient Nanosponge for Pollutants Removal

摘要

Hybrid materials based on halloysite nanotubes (HNT) and cucurbit8 uril (CB8) were prepared with the aim to obtain efficient nanosponges towards hydrocarbons both in liquid and vapor phases. The loading on both HNT surfaces and the hybrid morphology were evidenced by FTIR spectroscopy, thermogravimetric analysis and scanning electron microscopy. In order to highlight the interactions in the hybrid C-13 {H-1} CP-MASNMR experiments were performed. The aqueous colloidal stability of HNT/CB8 was highlighted through zeta potential and dynamic light scattering measurements. The HNT/CB8 composite was employed as nanosponge to capture aromatic oils in aqueous phase as evidenced by fluorescence emission spectra of pyrene. These results were correlated with the adsorption capacity of the hybrid toward toluene in vapor phase. This paper provides an efficient way to prepare a biocompatible hybrid material that could be used as a potential multi-pockets nano-container for decontamination of polluted water and/or air.