密度功能理论分析和分子动态模拟,以了解危险染料在水溶液中的纤维素上吸附的机制
Malika Khnifira1, Wafaa Boumya1, Jamal Atarki1
1Sultan Moulay Slimane University of Beni Mellal, Multidisciplinary Research and Innovation Laboratory, FP Khouribga, BP. 145, 2500 Khouribga, Morocco.
International journal of biological macromolecules
|November 3, 2024
概括
纤维素有效地从水中去除离子染料,如红色和甲基红色. 分子动力学模拟显示化学吸收,其中化学键驱动着染料吸附到纤维素表面.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 计算化学的计算化学
背景情况:
- 离子染料,如红色和甲基红色,在水性介质中构成环境挑战.
- 纤维素是一种潜在的吸附剂,可用于去除污染物,因为它具有反应性位点.
研究的目的:
- 为了研究蓝色卡明和甲基红在纤维素上的吸附机制.
- 利用分子动力学模拟来理解染料-纤维素相互作用和吸附配置.
主要方法:
- 对纤维素和染料上的反应部位的理论分析.
- 分子动力学模拟以模拟纤维素 (200) 表面上的染料吸附.
- 辐射分布函数分析以确定吸附类型 (化学吸附).
主要成果:
- 纤维素对红色和甲基红色都有很高的吸附能力.
- 吸附发生在纤维素表面的平躺配置中.
- 由化学键驱动的化学吸附是主要的吸附机制,吸附能量和辐射分布函数分析证实了这一点.
结论:
- 纤维素是离子染料,红色和甲基红色的有效吸附剂.
- 分子动力学模拟为染料吸附机制和配置提供了宝贵的见解.
- 这项研究使用量子和动态描述器验证了实验发现,提供了对纤维素上的阴离子染料吸附的更深入的理解.
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