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首页> 外文会议>China International Conference on High-Performance Ceramics >Rapid Reversible Superhydrophobicity to Superhydrophilicity Conversion of HF-tuned ZnO Flower-like Micro-Sphere Films
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Rapid Reversible Superhydrophobicity to Superhydrophilicity Conversion of HF-tuned ZnO Flower-like Micro-Sphere Films

机译：HF调谐ZnO花样微球膜的超途径转化的快速可逆超细纤维性

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Superhydrophobic ZnO films were prepared by a simple low-temperature solution method, where the ZnO morphology was tuned by hydrofluoric acid. The film topography presents two different length scales: micro flower-like-spheres and nano petals. Such hierarchical structures give the film a superhydrophobic behavior with water contact angle (CA) of 151°, turning into a superhydrophilic one (CA < 5°) after 30 min vacuum ultraviolet (VUV) illumination. The transition from superhydrophobicity to superhydrophilicity is more quickly than the past report using UV illumination because VUV gives higher energy upon the ZnO films. The VUV-illuminated film can be recovered to superhydrophobic through being placed in the dark. Such special wettability can be explained based on ZnO as a photoinduced semiconductor and a photocatalyst. This study will greatly extend applications of ZnO nanomaterials to many important fields, such as microfluidic devices.
机译：通过简单的低温溶液方法制备超疏水ZnO膜，其中通过氢氟酸调整ZnO形态。电影地形呈现出两种不同的长度：微花状球体和纳米花瓣。这种等级结构使膜具有151°的水接触角（CA）的超疏水性行为，在30分钟真空紫外（VUV）照明后变成超硫酸（Ca <5°）。通过使用紫外线照明的过去的报告，从超疏水性转变为超级水分，因为VUV在ZnO膜上提供更高的能量。通过放置在黑暗中，可以将VUV照射膜回收至超细杂志。可以基于ZnO作为光致催化和光催化剂来解释这种特殊润湿性。本研究将大大扩展ZnO纳米材料在许多重要领域的应用，例如微流体装置。

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