Tuning solid surfaces from hydrophobic to superhydrophilic by submonolayer surface modification.
Tuning solid surfaces from hydrophobic to superhydrophilic by submonolayer surface modification.
复制标题
DOI：
10.1103/physrevlett.97.036107
复制
发表时间：
2006-07
影响因子：
8.6
通讯作者：
Sheng Meng;Zhenyu Zhang;E. Kaxiras
中科院分区：
文献类型：
--
作者：
Sheng Meng;Zhenyu Zhang;E. Kaxiras
Molecular-scale understanding and manipulation of the wetting behavior of water on solids remains a fundamental challenge. Using diamond as a model system, we show that the naturally hydrophobic behavior of a hydrogen-terminated C(111) surface can be manipulated by replacing the H termination with a monolayer of adsorbate. In particular, a mixed monolayer of 1/3 Na and 2/3 F atoms leads to superhydrophilic behavior, as shown by first-principles calculations. The physical origin of the superhydrophilic behavior is attributed to the ionic nature of the Na adatoms, which mediate the right degree of binding strength between water molecules and the substrate.
