Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran.
Department of Physical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan 65167, Iran.
J Colloid Interface Sci. 2022 Nov;625:383-396. doi: 10.1016/j.jcis.2022.06.039. Epub 2022 Jun 11.
In recent years, the combination of factors such as growing population and global climate change has resulted in freshwater shortages. Therefore, water harvesting from the atmospheric fog in order to produce freshwater supply inspired by nature has received much attention. The water harvesting capability of the creatures is significantly based on the combination of both wettability states on their surfaces. In this study, a facile physicochemical hybrid method was used for the fabrication of glass surfaces with contrast wettability. First, fractal and regular repeated geometric patterns were deposited on a glass substrate using brass sheet as donor material by laser induced forward transfer (LIFT) method. Subsequently, stearic acid (SA) treatment was used to convert the wettability of the superhydrophilic (SHL) deposited patterns on glass to superhydrophobic. In order to investigate the effect of the shape of designed patterns on glass surfaces in the water harvesting efficiency, the amount of collected water for a period of time from untreated hydrophilic (HL) glass, superhydrophobic (SHB) glass and hybrid superhydrophobic/hydrophilic (SHB-HL) surfaces were measured. The obtained results indicate that the hybrid of superhydrophobic and hydrophilic regions and selecting the optimal pattern can improve the water harvesting performance by up to 300%.
近年来，人口增长和全球气候变化等因素的结合导致了淡水资源短缺。因此，人们受到大自然的启发，开始从大气雾中收集水以产生淡水供应，这种方法受到了广泛关注。生物的集水能力主要基于其表面的润湿性状态的结合。在这项研究中，采用了一种简单的物理化学混合方法来制备具有对比润湿性的玻璃表面。首先，通过激光诱导正向传输（LIFT）方法，使用黄铜片作为供体材料在玻璃基底上沉积分形和规则重复的几何图案。随后，通过使用硬脂酸（SA）处理将玻璃上沉积的超亲水（SHL）图案的润湿性转变为超疏水。为了研究玻璃表面设计图案形状对集水效率的影响，测量了未经处理的亲水（HL）玻璃、超疏水（SHB）玻璃和混合超疏水/亲水（SHB-HL）表面在一段时间内收集的水量。结果表明，超疏水和亲水区域的混合以及选择最佳图案可以将集水性能提高 300%以上。
