Efficient organic pollutant degradation under visible-light using functional polymers of intrinsic microporosity. Issue 19 (10th September 2019)

• Record Type: Journal Article
• Authors: Tang, Qingquan; Gong, Jiang; Zhao, Qiang
• Is Part Of: Catalysis science & technology. Volume 9:Issue 19(2019)
• Page Start: 5383
• Page End: 5393
• Publication Date: 2019-09-10
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c9cy01338e
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Functional PIMs bearing D–π–A and zwitterionic structures were synthesized by a quaternization reaction, which exhibit efficient organic pollutant degradation under visible-light. Abstract : Organic photocatalysts have recently drawn intense attention to wastewater treatment through the efficient utilization of solar energy. Rational design and synthesis of organic photocatalysts with facilitated charge-carrier transfer are crucial for achieving high-performance photodegradation of pollutants. In this work, functional polymers of intrinsic microporosity (PIMs) were synthesized by a quaternization reaction, and the zwitterionic and D–π–A structured polymers show visible-light-driven catalytic activity for the degradation of organic pollutants. The formation of D–π–A structures in PIMs is demonstrated to extend visible-light absorption and promote charge-transfer transition. Besides, the zwitterionic structures improve hydrophilicity and induce the aggregation of polymer chains, facilitating charge-carrier diffusion at the polymer–water and polymer–polymer interfaces. The combination of these favorable features endows the resulting PIMs with high catalytic degradation ability toward organic dyes under visible-light irradiation, which prevails over state-of-the-art organic photocatalysts.