中国物理B ›› 2025, Vol. 34 ›› Issue (1): 14701-014701.doi: 10.1088/1674-1056/ad989d
Stable nanobubbles on ordered water monolayer near ionic model surfaces
Luyao Huang(黄璐瑶)1,2, Cheng Ling(凌澄)3,4, Limin Zhou(周利民)5, Wenlong Liang(梁文龙)2, Yujie Huang(黄雨婕)2, Lijuan Zhang(张立娟)5, Phornphimon Maitarad1,†, Dengsong Zhang(张登松)2,‡, and Chunlei Wang(王春雷)2,†
- 1 Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China;
2 International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China;
3 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
4 University of Chinese Academy of Sciences, Beijing 100049, China;
5 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
Stable nanobubbles on ordered water monolayer near ionic model surfaces
Luyao Huang(黄璐瑶)1,2, Cheng Ling(凌澄)3,4, Limin Zhou(周利民)5, Wenlong Liang(梁文龙)2, Yujie Huang(黄雨婕)2, Lijuan Zhang(张立娟)5, Phornphimon Maitarad1,†, Dengsong Zhang(张登松)2,‡, and Chunlei Wang(王春雷)2,†
- 1 Research Center of Nano Science and Technology, Department of Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China;
2 International Joint Laboratory of Catalytic Chemistry, College of Sciences, Shanghai University, Shanghai 200444, China;
3 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
4 University of Chinese Academy of Sciences, Beijing 100049, China;
5 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
摘要： The stable nanobubbles adhered to mineral surfaces may facilitate their efficient separation via flotation in the mining industry. However, the state of nanobubbles on mineral solid surfaces is still elusive. In this study, molecular dynamics (MD) simulations are employed to examine mineral-like model surfaces with varying degrees of hydrophobicity, modulated by surface charges, to elucidate the adsorption behavior of nanobubbles at the interface. Our findings not only contribute to the fundamental understanding of nanobubbles but also have potential applications in the mining industry. We observed that as the surface charge increases, the contact angle of the nanobubbles increases accordingly with shape transformation from a pancake-like gas film to a cap-like shape, and ultimately forming a stable nanobubble upon an ordered water monolayer. When the solid-water interactions are weak with a small partial charge, the hydrophobic gas (N$_{2}$) molecules accumulate near the solid surfaces. However, we have found, for the first time, that gas molecules assemble a nanobubble on the water monolayer adjacent to the solid surfaces with large partial charges. Such phenomena are attributed to the formation of a hydrophobic water monolayer with a hydrogen bond network structure near the surface.
中图分类号: (Bubble dynamics)
- 47.55.dd