Covalent Triazine Framework Polymer as a Photocatalyst for the Degradation of Ofloxacin under Visible Light Irradiation

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES Water, Air, & Soil Pollution Pub Date : 2025-02-08 DOI:10.1007/s11270-025-07790-w

Mohammad Bashar, Soheil Sobhanardakani, Mehrdad Cheraghi, Bahareh Lorestani, Behzad Shahmoradi

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Abstract

The synthesis of a covalent triazine framework polymer (CTF-P) from the polymerization of piperazine and cyanuric chloride is reported in this study. The prepared CTF-P was used as photocatalyst to evaluate its activity for the degradation of ofloxacin (OFL), an emerging concern in water. The material was characterized using N₂ isotherms, XRD, FTIR, TEM, SEM, EDX and DRS-UV–Vis analyses. FESEM and TEM images confirmed that CTF-P exhibits a nanosheet-like structure. The findings showed that 98.6% of OFL would degrade under pseudo-first-order kinetics in 120 min of exposure to 50 W LED light. Quenching tests showed that holes, superoxide, and exited electrons play crucial roles in the degradation of OFL. The recyclable nature of CTF-P was demonstrated over five cycles, maintaining an impressive 88.9% removal efficiency, which showcases the feasibility of the proposed photocatalyst for reuse. The strategic design of photocatalysts based on the CTF framework offers a novel approach to enhancing the degradation of organic pollutants.

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共价三嗪框架聚合物在可见光下降解氧氟沙星的光催化剂研究

本文报道了哌嗪和三聚氰胺聚合合成共价三嗪框架聚合物（CTF-P）。以制备的CTF-P作为光催化剂，考察了其对水中新出现的氧氟沙星（OFL）的降解活性。采用N2等温线、XRD、FTIR、TEM、SEM、EDX和DRS-UV-Vis等方法对材料进行了表征。FESEM和TEM图像证实CTF-P呈纳米片状结构。结果表明，在50 W LED光照射120 min后，98.6%的OFL在准一级动力学下降解。猝灭实验表明，空穴、超氧化物和逸出电子对OFL的降解起着至关重要的作用。CTF-P的可回收性在五个循环中得到了证明，并保持了令人印象深刻的88.9%的去除率，这表明了所提出的光催化剂可重复使用的可行性。基于CTF框架的光催化剂策略设计为增强有机污染物的降解提供了一种新的途径。

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来源期刊

Water, Air, & Soil Pollution 环境科学-环境科学

CiteScore

4.50

自引率

6.90%

发文量

448

审稿时长

2.6 months

期刊介绍： Water, Air, & Soil Pollution is an international, interdisciplinary journal on all aspects of pollution and solutions to pollution in the biosphere. This includes chemical, physical and biological processes affecting flora, fauna, water, air and soil in relation to environmental pollution. Because of its scope, the subject areas are diverse and include all aspects of pollution sources, transport, deposition, accumulation, acid precipitation, atmospheric pollution, metals, aquatic pollution including marine pollution and ground water, waste water, pesticides, soil pollution, sewage, sediment pollution, forestry pollution, effects of pollutants on humans, vegetation, fish, aquatic species, micro-organisms, and animals, environmental and molecular toxicology applied to pollution research, biosensors, global and climate change, ecological implications of pollution and pollution models. Water, Air, & Soil Pollution also publishes manuscripts on novel methods used in the study of environmental pollutants, environmental toxicology, environmental biology, novel environmental engineering related to pollution, biodiversity as influenced by pollution, novel environmental biotechnology as applied to pollution (e.g. bioremediation), environmental modelling and biorestoration of polluted environments. Articles should not be submitted that are of local interest only and do not advance international knowledge in environmental pollution and solutions to pollution. Articles that simply replicate known knowledge or techniques while researching a local pollution problem will normally be rejected without review. Submitted articles must have up-to-date references, employ the correct experimental replication and statistical analysis, where needed and contain a significant contribution to new knowledge. The publishing and editorial team sincerely appreciate your cooperation. Water, Air, & Soil Pollution publishes research papers; review articles; mini-reviews; and book reviews.