Nature-Inspired Pyrylium Cation-Based Vinylene-Linked Two-Dimensional Covalent Organic Framework for Efficient Sunlight-Driven Water Purification

Li S, Geng Y, Teng B, Xu S, Petkov PS, Liao Z, Jost B, Liu Y, Feng X, Wu B, Zhang T (2023)

Publication Type: Journal article

Publication year: 2023

Journal

Chemistry of Materials American Chemical Society

Book Volume: 35

Pages Range: 1594-1600

Journal Issue: 4

DOI: 10.1021/acs.chemmater.2c03083

Abstract

Sunlight-driven photocatalytic water purification for the removal of persistent organic compounds and microorganisms has been widely regarded as a promising technology due to the low energy consumption and environmental friendliness; however, it calls for efficient and sustainable photocatalysts. Pyrylium cation is a photoactive component of many naturally occurring dyes in fruits, flowers, and leaves. Herein, we report the synthesis of a novel pyrylium cation contained vinylene-linked two-dimensional covalent organic framework (v-2D-COF-O1) via aldol-type polycondensation. The resultant v-2D-COF-O1 has a narrow band gap (1.15 eV) and wide-range light absorption up to ∼920 nm. More importantly, the v-2D-COF-O1 can activate molecular oxygen to generate highly reactive oxygen species including superoxide (•O2-) and hydroxyl radicals (•OH) under simulated sunlight (AM 1.5 G), which leads to remarkable photocatalytic activities in both organic waste decomposition and water disinfection. These results suggest the potential of v-2D-COFs as high-performance photocatalysts for water purification.

Involved external institutions

Shantou Open University / 汕头开放大学 CN China (CN) Technische Universität Dresden DE Germany (DE) Fraunhofer-Institut für Keramische Technologien und Systeme (IKTS) DE Germany (DE) Nanyang Technological University (NTU) SG Singapore (SG) Zhejiang University of Technology (ZJUT) / 浙江工业大学 CN China (CN) Chinese Academy of Sciences (CAS) / 中国科学院 CN China (CN) Sofia University "St. Kliment Ohridski" / Софийски университет "Св. Климент Охридски" BG Bulgaria (BG)

How to cite

APA:

Li, S., Geng, Y., Teng, B., Xu, S., Petkov, P.S., Liao, Z.,... Zhang, T. (2023). Nature-Inspired Pyrylium Cation-Based Vinylene-Linked Two-Dimensional Covalent Organic Framework for Efficient Sunlight-Driven Water Purification. Chemistry of Materials, 35(4), 1594-1600. https://doi.org/10.1021/acs.chemmater.2c03083

MLA:

Li, Shengxu, et al. "Nature-Inspired Pyrylium Cation-Based Vinylene-Linked Two-Dimensional Covalent Organic Framework for Efficient Sunlight-Driven Water Purification." Chemistry of Materials 35.4 (2023): 1594-1600.

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