一个pH值依赖和电荷选择性的共价有机框架,用于从水溶液中去除染料
Forouz Rastegari1, Saeid Asghari1, Iraj Mohammadpoor-Baltork1
1Department of Chemistry, Catalysis Division, University of Isfahan, Isfahan 81746-73441, Iran.
Journal of hazardous materials
|July 10, 2024
概括
一种新的 imine-linked 共价有机框架 (COF) 有效地从水中去除染料. 这种COF对各种染料具有很高的吸附能力,使其对废水处理具有很高的希望.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 有机染料是工业废水中常见的污染物.
- 有效地去除各种染料类型仍然是一个挑战.
- 共价有机框架 (COF) 显示了污染物吸附的潜力.
研究的目的:
- 为了合成和表征一种用于染料去除的新型胺基结合COF.
- 为了研究COF对不同类型的染料 (阴离子,阴离子,中性) 的吸附性能.
- 探索潜在的吸附机制和实际应用.
主要方法:
- 这是TAPT-HMIPA-COF的溶热合成.
- 在不同的pH值下进行染料吸附实验.
- 异热和动力学研究 (Langmuir,伪二阶).
- 使用BET,FTIR和泽塔潜力分析进行表征.
- 在真实水和经过处理的废水样本上进行测试.
主要成果:
- 在TAPT-HMIPA-COF中,甲基蓝 (108 mg/g),甲基色 (185 mg/g) 和中性红 (429 mg/g) 的吸附能力较高.
- 吸附之后是兰迈尔等温和和伪二次动力学,发生迅速 (11-60分钟).
- 电静电相互作用,π-π堆叠和键被确定为关键的吸附机制.
结论:
- 合成的TAPT-HMIPA-COF是各种有机染料的高效吸附剂.
- 它的可回收性和在真实样本中的有效性突显了其在废水处理方面的潜力.
- 通过调整溶液pH值,COF显示出同时去除多种染料类型的前景.
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