journal article·2023-02-28

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

Shengxu Li, Yikun Geng, Bo Teng, Shunqi Xu, Petko Stoev Petkov, Zhongquan Liao, Birgit Jost, Yu Liu, Xinliang Feng, Bozhen Wu, Tao Zhang

Chemistry of Materials· Volume 35· Issue 4
Publisher page

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 (•O 2 – ) 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.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Covalent Organic Framework Applications · Advanced Photocatalysis Techniques · Luminescence and Fluorescent Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China

Key Laboratory of Marine Materials and Related Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Advanced Environmental Biotechnology Centre, Nanyang Environment & Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore 637141, Singapore

Department of Biology & Guangdong Provincial Key Laboratory of Marine Biotechnology, Institute of Marine Sciences, College of Science, Shantou University, Shantou, Guangdong 515063, China

Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, Dresden 01062, Germany

Faculty of Chemistry and Pharmacy, University of Sofia, Sofia 1164, Bulgaria

Fraunhofer Institute for Ceramic Technologies and Systems (IKTS), Maria-Reiche-Strasse 2, 01109 Dresden, Germany

Funding

National Natural Science Foundation of China · Zhejiang Province · Key Research and Development Program of Ningbo · Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang

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