期刊
SCIENCE
卷 344, 期 6188, 页码 1138-1142出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1253793
关键词
-
资金
- Belgian Fund for Scientific Research-Fonds de la Recherche Scientifique (F.R.S.-FNRS)
- Marie Curie Foundation [CIG322284, CIG334368]
In nature, aqueous solutions often move collectively along solid surfaces (for example, raindrops falling on the ground and rivers flowing through riverbeds). However, the influence of such motion on water-surface interfacial chemistry is unclear. In this work, we combine surface-specific sum frequency generation spectroscopy and microfluidics to show that at immersed calcium fluoride and fused silica surfaces, flow leads to a reversible modification of the surface charge and subsequent realignment of the interfacial water molecules. Obtaining equivalent effects under static conditions requires a substantial change in bulk solution pH (up to 2 pH units), demonstrating the coupling between flow and chemistry. These marked flow-induced variations in interfacial chemistry should substantially affect our understanding and modeling of chemical processes at immersed surfaces.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据