Donor‐Acceptor Conjugated Heptazine Polymers with Highly Efficient Photocatalytic Degradations towards Tetracyclines
| Autor: | Wei Zeng, Zhen Li, Jun-Feng Zheng, Mei-Jin Lin, Xin Fang, Meng-Hua Li |
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| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Biphenyl Polymers and Plastics Heptazine Polymers Triazines Organic Chemistry Polymer Electron acceptor Fluorene Conjugated system Photochemistry chemistry.chemical_compound chemistry Tetracyclines Terphenyl Materials Chemistry Photocatalysis Heterocyclic Compounds 3-Ring |
| Zdroj: | Macromolecular Rapid Communications. 42:2100577 |
| ISSN: | 1521-3927 1022-1336 |
| DOI: | 10.1002/marc.202100577 |
| Popis: | Photocatalysis is an efficient and green technology in the environmental protection. Due to the high charge separation and transfer, donor-acceptor (D-A) conjugated polymers attract much attention for their photocatalytic degradations towards organic pollutants. Herein, the authors reported three novel D-A conjugated polymers, named as HPBP, HPTP, and HPF, with heptazine moieties as electron acceptors, while biphenyl, terphenyl, or fluorene moieties as electron donors, respectively, which indeed exhibit a highly efficient photocatalytic degradation towards tetracyclines upon the visible-light irradiation. Among them, the photocatalytic performance of HPF is especially noticeable with the degradation rate up to 87% within 30 min, almost 11 times in comparison to those of pristine g-C3 N4 , which is mainly attributed to its high crystallinity and conjugation. For their photocatalytic mechanism, the •O2- radical anions are regarded as the active species. |
| Databáze: | OpenAIRE |
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