为了全面了解表面纳米泡异常小的接触角度
Dayong Li1, Yutong Ji1, Zhenlin Wei1
1School of Electromechanical and Automotive Engineering, Yantai University, Yantai 264005, China.
Langmuir : the ACS journal of surfaces and colloids
|April 10, 2024
概括
固体-液体接口上的气体吸附不会显著改变表面纳米泡 (SNB) 的小接触角度 (CA). 其他因素可能有助于SNB的稳定性及其异常小的CA.
科学领域:
- 表面科学是一门科学.
- 纳米技术 纳米技术
- 物理化学 物理化学
背景情况:
- 表面纳米泡 (SNBs) 的接触角度 (CA) 比宏观泡小得多.
- 这种降低的CA对于SNB稳定性至关重要,因为它降低了内部压力并抑制了气体溶解.
- 这种异常小的CA的确切原因仍在调查中.
研究的目的:
- 实验性地研究气体吸附在固体液体接口对SNB接触角度的影响.
- 探索基质特性和其他因素在确定SNB CA.中的作用.
- 提出一个全面的模型,以了解影响SNB CA和稳定的因素.
主要方法:
- 使用溶剂交换 (SE) 和温度差异 (TD) 方法创建SNB.
- 在各种基板上进行了接触角测量,包括高度定向的 pyrolytic 石墨 (HOPG),聚烯 (PS) 和八基三西兰 (OTS).
- 分析了气体吸附,杂质,电双层 (EDL) 线张力和固定力的影响.
主要成果:
- 固体-液体接口上的气体吸附对 SNB CA 在 HOPG 表面没有显著影响.
- 微/纳米饼上的SNB与赤裸的HOPG相比,只显示了轻微的CA减少.
- 在PS和OTS基板上的SNB显示了CA的显著增加.
- 该研究讨论了杂质,EDL线张力和对SNB CA的固定力的影响.
结论:
- 沉浸在固体表面的气体吸附不太可能是SNB中小CA的主要原因.
- 建议采用一个包含多个因素的综合模型来解释SNB异常小的CA和稳定性.
- 进一步了解这些因素对于控制SNB行为和应用至关重要.
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