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基于Fe3O4的高度选择性和可重复使用的纳米吸收剂嵌入基酸盐基凝用于阴阳性染料吸附:使用多尺度建模的吸附解释
Muhammad Umar1, Hammad Khan2, Feryal Akbal3
1Faculty of Materials and Chemical Engineering, GIK Institute of Engineering Sciences and Technology, Topi, Swabi 23640, Pakistan; Department of Environmental Engineering, Ondokuz Mayıs Üniversitesi, Samsun, Turkey.
International journal of biological macromolecules
|December 17, 2024
概括
一种新的磁性纳米复合材料水凝 (MNCH) 有效地去除甲蓝 (MB) 和水晶紫 (CV) 染料. 优化的MNCH表现出高吸附能力和选择性,显示出对废水处理应用的前景.
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:
- 污染废水的染料,如甲蓝 (MB) 和水晶紫 (CV) 构成环境风险.
- 开发高效和可回收的吸附剂对于去除染料至关重要.
- 磁纳米复合材料水凝 (MNCHs) 由于其结合的磁性和吸附性质,提供了潜在的潜力.
研究的目的:
- 为了合成和描述一个稳定的磁纳米复合材料水凝 (MNCH).
- 评估MNCH在选择性地从水溶液中去除MB和CV染料方面的效率.
- 研究MNCH用于染料去除的吸附机制和热力学行为.
主要方法:
- 具有不同Fe3O4含量的MNCHs的移植共聚合合成.
- 使用X射线衍射 (XRD) 和Brunauer-Emmett-Teller (BET) 分析进行表征.
- 吸附研究以确定最佳条件 (pH,时间,剂量) 并分析动力学和同热量 (Langmuir-Freundlich).
主要成果:
- 使用5重%Fe3O4 (MNCH5) 的MNCH实现了MB和CV的去除效率>95%.
- 最佳的去除发生在pH10下,每个染料的接触时间都特定.
- 吸附遵循了碎形伪第一阶和碎形维梅伦扩散模型,具有高的朗格穆尔-弗朗德利希容量 (MB: 4216.69 mg g-1,CV: 3730.17 mg g-1).
结论:
- 合成的MNCH表现出良好的吸附能力和对MB和CV的选择性.
- 吸附过程受到异质表面相互作用的影响,正如碎形模型所示.
- MNCH是一种有前途的磁吸附剂,可以有效地从废水中去除有机染料.
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