模拟水与石墨烯和石墨的相互作用,通过与实验接触角度一致的力场
Shane R Carlson1, Otto Schullian1,2, Maximilian R Becker1
1Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany.
The journal of physical chemistry letters
|June 10, 2024
概括
对水-石墨烯和水-石墨烯相互作用的优化力场改善了纳米流体模拟. 新的方法准确计算接触角度,将模拟与这些关键材料的实验数据对齐.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 纳米技术 纳米技术
背景情况:
- 对水-石墨烯和石墨烯相互作用的精确模拟模型对于纳米流体应用至关重要.
- 现有的力场在预测的水接触角度中表现出显著的差异.
研究的目的:
- 为了优化水-石墨烯和石墨烯相互作用的经典力场.
- 开发一种可靠的方法来计算模拟中的接触角度.
主要方法:
- 对石墨烯-水和石墨烯-水接触角度的实验文献进行了广泛的审查.
- 对经典力场的碳氧分散能量的优化.
- 对于有限的切断值的相互作用力场的导出.
- 引入压力张量方法用于触角计算.
主要成果:
- 优化的力场为不支持的石墨烯产生了80°的接触角度,与实验平均值相匹配.
- 石墨与水的接触角度分为新鲜剥皮 (60°±13°) 和非新鲜剥皮的组.
- 开发了一种适用于平面平衡模拟的接触角度计算方法.
结论:
- 优化的力场提供了精确的模拟水与石墨烯和石墨的相互作用.
- 新的方法提高了纳米流体模拟的可靠性.
- 这种方法广泛适用于各种液体表面相互作用.
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