Intelligent Mesoporous Materials for Selective Adsorption and Mechanical Release of Organic Pollutants from Water
writer：Siying Xie, Shanshan Wu, Sihan Bao,Liping Huang, Lingling Zhang, Myongsoo Lee,Zhegang Huang*
keywords：dynamic assembly, porous spheres, supramolecular absorbents
source：期刊
specific source：Adv. Mater
Issue time：2018年
Despite recent advances in the porous materials for efficient removal of dissolved organic pollutants from water, the regeneration of porous characteristics for reuse with preventing secondary contamination remains a challenge. Here, novel supramolecular absorbents with hydrophobic pore are prepared by the self-assembly of propeller-shaped aromatic amphiphiles.The assembly of folded propeller provides a mesoporous environment within
aromatic segments, which is suitable for the removal of organic pollutants from waste water. The removal efficiency is found to be 92% and 90% for ethinyl oestradiol (Eo) and bisphenol A (BPA). Notably, the folded architecture of propeller is observed to be flattened by the salt addition, which results in the strong π–π interaction driving the porous materials closed and forms solid fibers. It is found that most of the removed pollutants are spontaneously released by the dynamic porous assembly, and subsequent dialysis triggers
the porous materials to be recovered.