有机化合物和性对批量纳米泡稳定性的影响:分子动力学研究
Samal Kaumbekova1, Serina Ng2, Dhawal Shah3
1Center for Energy and Advanced Materials Science, National Laboratory Astana, Nazarbayev University, 53 Kabanbay Batyr Avenue, Astana 010000, Kazakhstan.
Molecules (Basel, Switzerland)
|December 31, 2025
概括
通过更高的气体密度和较少溶解的气体,如气,增强了纳米泡的稳定性. 疏水性添加剂通过促进气体聚类,显著提高了纳米泡的寿命.
科学领域:
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 大量纳米泡 (NBs) 在液体中表现出显著的寿命,但潜在的分子机制尚未完全理解.
- 了解NB稳定性对于环境修复,药物输送和工业过程中的应用至关重要.
研究的目的:
- 研究影响水中5nm纳米泡稳定性的分子因素.
- 确定气体标识,初始气体负载,pH值和有机添加剂对纳米泡持久性的影响.
主要方法:
- 采用了全原子分子动力学模拟 (50 ns).
- 模拟分析了气体保留,密度配置,键和辐射分布函数 (RDF).
- 研究的O2,N2,空气,不同气体负载,pH值7和13,以及有机添加剂 (乙酸,乙醇,).
主要成果:
- 较高的初始气体密度显著提高了纳米泡的稳定性.
- (N2) 纳米泡比氧 (O2) 纳米泡更稳定,与较低的N2溶解度相关.
- 疏水性六通过促进气体聚合和在接口上的再吸附,大幅增加了气体保留.
- 性条件有轻微的稳定作用,最显著的是空气纳米泡.
结论:
- 纳米泡的稳定性由气体溶解度,初始气体密度以及与添加剂的相互作用决定.
- 疏水性添加剂通过改变接口特性和促进气体聚类来稳定纳米泡.
- 这些发现为纳米泡持久性提供了分子洞察力,并为优化泡寿命提供了指导方针.
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