Feng Xinjian, Feng Lin, Jin Meihua, Zhai Jin, Jiang Lei, Zhu Daoben
Center for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, P. R. China.
J Am Chem Soc. 2004 Jan 14;126(1):62-3. doi: 10.1021/ja038636o.
Remarkable surface wettability transition occurs with an inducement of ultraviolet (UV) for aligned ZnO nanorod films. The inorganic oxide films, which show super-hydrophobicity (left), become super-hydrophilic (right) when exposed to UV illumination. After the films are placed in the dark, the wettability evolves back to super-hydrophobicity. This reversible effect is ascribed to the cooperation of the surface photosensitivity and the aligned nanostructure. Such special property will greatly extend the applications of ZnO films.
对于取向排列的ZnO纳米棒薄膜，在紫外线（UV）诱导下会发生显著的表面润湿性转变。这些无机氧化物薄膜，原本表现为超疏水性（左图），在紫外光照下会变成超亲水性（右图）。当薄膜置于黑暗环境中后，其润湿性又会恢复为超疏水性。这种可逆效应归因于表面光敏性与取向排列的纳米结构之间的协同作用。这种特殊性质将极大地拓展ZnO薄膜的应用。
