Tóm tắt

Paraquat, one of non-selective herbicides, is widely used in agricultural production. However, it can cause death rnof people or animals quickly owing to its fatal toxicity. In the present work, for efficient separation and removal rnof the paraquat, a concept “employ collaboration effect to enhance the Host-Guest interactions” was rationally rnintroduced into the design of paraquat adsorbent material. According to this concept, a novel linear tri-pillar5 rnarene-based acceptor molecule was synthesized. Interestingly, the acceptor shows outstanding adsorption rnproperties for paraquat through the collaboration effect of the adjacent pillar5arene moieties in the linear tri- rnpillar5arene acceptor. Compared with other adsorbents such as activated carbon and single-pillar5arene- rnbased adsorbent materials, the linear tri-pillar5arene acceptor shows higher adsorption rate for paraquat. rnAdditionally, the linear tri-pillar5arene acceptor was applied to adsorb the commercial pesticide paraquat rnsample in water with adsorption rate of 98%. Therefore, the linear tri-pillar5arene acceptor could serve as a rnparaquat adsorbent material and convey greatly potential application in the field of removal of paraquat. The rnconcept “employ collaboration effect to enhance the Host-Guest interactions” is a useful way for the develop-ment of adsorption materials.