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Intelligent Mesoporous Materials for Selective Adsorption and Mechanical Release of Organic Pollutants from Water
Author(s) -
Xie Siying,
Wu Shanshan,
Bao Sihan,
Wang Yanqiu,
Zheng Yongtai,
Deng Danfeng,
Huang Liping,
Zhang Lingling,
Lee Myongsoo,
Huang Zhegang
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201800683
Subject(s) - materials science , mesoporous material , pollutant , adsorption , porosity , chemical engineering , bisphenol a , amphiphile , reuse , organic chemistry , waste management , polymer , composite material , copolymer , chemistry , catalysis , epoxy , engineering
Abstract 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.