Continuous ultrathin UiO-66-NH2 coatings on a polymeric substrate synthesized by a layer-by-layer method: a kind of promising membrane for oil–water separation. Issue 12 (21st February 2020)

• Record Type: Journal Article
• Authors: Gao, Jian; Wei, Wei; Yin, Yuan; Liu, Meihua; Zheng, Chunbai; Zhang, Yifan; Deng, Pengyang
• Is Part Of: Nanoscale. Volume 12:Issue 12(2020)
• Page Start: 6658
• Page End: 6663
• Publication Date: 2020-02-21
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr10049k
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : An ultrathin UiO-66-NH2 coating based on a polymeric substrate was prepared by a layer-by-layer method and exhibited good oil–water separation performance. Abstract : In this paper, we successfully controllably synthesize continuous nanothickness MOF coatings (NTMCs) by a layer-by-layer method on a polymeric substrate. The polymeric substrate was pretreated with high energy γ-irradiation to induce a high surface density of living reactive groups, which ensure the formation of continuous surface-integrated NTMCs. SEM, FT-IR spectroscopy and XPS were used to characterize NTMCs. The thickness and morphology were tuned by the LBL cycles, and NTMCs with a thickness of ∼44 nm were obtained. The chemical bonds between the NTMCs and polymeric substrate were confirmed by XPS and EDS. Moreover, the NTMCs exhibit good performance for oil–water separation. We believe that our work will promote the design and precise synthesis of high-performance MOF based membranes for multiple practical applications in future.