A durable luminescent ionic polymer for rapid detection and efficient removal of toxic Cr2O72−. Issue 32 (27th July 2016)

• Record Type: Journal Article
• Authors: Wang, Yangxin; Zhao, Huaixia; Li, Xinxiong; Wang, Ruihu
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 32(2016)
• Page Start: 12554
• Page End: 12560
• Publication Date: 2016-07-27
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6ta03516g
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A durable imidazolium-based main-chain ionic polymer for rapid luminescence detection and removal of toxic Cr2 O7 2− was prepared. The separation and recycling procedures are simplified by the integration of Fe3 O4 particles and the polymer. Abstract : A durable luminescent imidazolium-based main-chain ionic polymer (IMIP-Br) was prepared by a facile quaternization reaction of tri(4-imidazolylphenyl)amine and 1, 2, 4, 5-tetrakis(bromomethyl)benzene. IMIP-Br can not only detect Cr2 O7 2− rapidly and estimate its concentration in water, but also capture Cr2 O7 2− quickly via anion exchange. The tremendous exchange capacity of 318 mg g −1 and remarkable efficiency of 92.6% are achieved using an equivalent amount of IMIP-Br. The separation and recycling procedures are simplified by the integration of Fe3 O4 particles and IMIP-Br. The resultant IMIP-Fe shows outstanding enrichment ability, good regenerative ability and superior recyclability for removal of Cr2 O7 2− . The combination of promising removal performances and simple magnetic separation endows IMIP-Fe with great promises for capture and separation of Cr2 O7 2− from contaminated water systems.