Nanoscale Hydrophilicity on Metal Surfaces at Room Temperature: Coupling Lattice Constants and Crystal Faces
Xu, Z; Gao, Y; Wang, CL; Fang, HP; Wang, CL (reprint author), Chinese Acad Sci, Div Interfacial Water, POB 800-204, Shanghai 201800, Peoples R China.
2015
发表期刊JOURNAL OF PHYSICAL CHEMISTRY C
ISSN1932-7447
卷号119期号:35页码:20409—20415
文章类型期刊文献
摘要It is generally accepted that the metal water interface tensions are quite high; thus, the metal surfaces are usually regarded as hydrophilic. Using the molecular dynamics simulations, we have investigated the microscopic wetting behaviors of a series of metal surfaces at room temperature, including Ni, Cu, Pd, Pt, Al, Au, Ag, and Pb with three crystal faces of (100), (110), and (111). We have found that the wetting of the metals is greatly dependent on both the lattice constants and crystal surfaces. Particularly, stable water droplets are found forming on the first ordered water layer, serving as an evidence of room temperature "ordered water monolayer that does not completely wet water" on Pd(100), Pt(100), and Al(100) surfaces, while water films without ordered water monolayer are found on (110) and (111) faces of all metal surfaces and even (100) face of other metal surfaces (Ni, Cu, Au, Ag, and Pb). The formation of water droplets is attributed to the rhombic ordered water layers on the surfaces, reducing the number of hydrogen bond formation between the monolayers and other water molecules atop the water monolayer. These results demonstrate a tight correlation among the lattice constant, the crystal faces, and the surface wetting behaviors. Our findings of the novel wetting behavior may have potential applications in the surface friction reduction at the metal surfaces, design of the anti-ice materials, and the nonfouling materials.
关键词Dewetting Transition Hydrophobic Particles Melittin Tetramer Ordered Water Interfaces Collapse Ethanol Wettability Potentials Simulation
语种英语
WOS记录号WOS:000360947800021
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25000
专题中科院上海应用物理研究所2011-2018年
通讯作者Wang, CL (reprint author), Chinese Acad Sci, Div Interfacial Water, POB 800-204, Shanghai 201800, Peoples R China.
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GB/T 7714
Xu, Z,Gao, Y,Wang, CL,et al. Nanoscale Hydrophilicity on Metal Surfaces at Room Temperature: Coupling Lattice Constants and Crystal Faces[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(35):20409—20415.
APA Xu, Z,Gao, Y,Wang, CL,Fang, HP,&Wang, CL .(2015).Nanoscale Hydrophilicity on Metal Surfaces at Room Temperature: Coupling Lattice Constants and Crystal Faces.JOURNAL OF PHYSICAL CHEMISTRY C,119(35),20409—20415.
MLA Xu, Z,et al."Nanoscale Hydrophilicity on Metal Surfaces at Room Temperature: Coupling Lattice Constants and Crystal Faces".JOURNAL OF PHYSICAL CHEMISTRY C 119.35(2015):20409—20415.
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