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Water Collection of Hafinia Films with Petal Effect and Application to Water Harvesting Devices

具有花瓣效应的 Hafinia 薄膜集水及其在集水装置中的应用

基本信息

批准号：
23560805
负责人：
NISHIDE Toshikazu
金额：
$ 3.58万
依托单位：
Nihon University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2011
资助国家：
日本
起止时间：
2011 至 2013
项目状态：
已结题

项目摘要

Water collecting property of sol-gel derived hafnia films with petal effect was investigated. Preparation and water collection of hydrophilic-hydrophobic patterned films by screen printing method was also investigated.The hafnia films containing glycolic acid and glycine showed petal effect and the films collected 0.49 and 0.47 g of water from water vapor, respectively, when the films with 5 cm X 5 cm in size stood in water vapor for 2 h. The glass substrate collected 0.23 g of water in the same condition. The patterned films were prepared as follows. Hydrophobic patterns of 1 mm in width were prepared by printing the hafnia sols containing acetic acid, which showed hydrophobicity, on the super-hydrophilic film by screen printing processes. The patterned films collected 0.47 g of water in the same condition mentioned above. These results indicate that the films with petal effect and patterned films collected a large amount of water from water vapor.

研究了具有花瓣效应的Sol-Gel法制备的Hafnia薄膜的集水性能。采用丝网印刷法制备了亲水疏水图案化薄膜，含乙醇酸和甘氨酸的Hafnia薄膜在水蒸气中放置2 h后，吸水率分别为0.49 g和0.47 g，表现出花瓣效应，玻璃衬底吸水率为0.23 g。图案化薄膜的制备如下。采用丝网印刷技术，将具有疏水性的含醋酸的Hafnia溶胶印刷在超亲水薄膜上，制得了宽度为1 mm的疏水图案。在上述相同条件下，图案化薄膜收集0.47g水。这些结果表明，具有花瓣效应的薄膜和花纹薄膜从水蒸气中收集了大量的水。