With the increase of people's awareness of environmental protection and the enhancement of relevant management and regulations, the effective treatment of oily wastewater has gradually attracted people's attention. In this study, copper wire mesh (CWM) is used as the base. A convertible wettability titanium dioxide @CWM (TiO₂@CWM) micro–nanostructured surface of a filter screen was prepared using an easy hydrothermal method for separating different varieties of oily wastewater is presented. In particular, the rapid change of wettability can be achieved because of the photohydrophilic properties of TiO₂. A stearic acid modified filter screen has superhydrophobic properties and has the ability to separate a heavy oil–water mixture. However, when the light oil–water mixture needs to be separated, the surface wettability of the filter screen can be converted to superhydrophilicity using ultraviolet irradiation. This method can play a significant role in practical industrial applications because of its easy preparation process, fast wettability conversion and the product has a certain mechanical strength.

中文翻译：

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一种易于制备的光响应性TiO ₂ @铜丝网，具有快速开/关可切换的超湿性，可实现高效的油水分离†

随着人们环保意识的增强和相关管理法规的加强，含油废水的有效处理逐渐引起人们的关注。在这项研究中，铜丝网（CWM）被用作基础。提出了一种利用易水热法分离不同种类含油废水的可转换润湿性二氧化钛@CWM（TiO ₂ @CWM）微纳米结构表面。特别地，由于TiO ₂的光亲水性，可以实现润湿性的快速变化。。硬脂酸改性的滤网具有超疏水性能，并且能够分离出重油与水的混合物。但是，当需要分离轻质油水混合物时，可以使用紫外线照射将滤网的表面润湿性转化为超亲水性。该方法制备工艺简单，润湿性转化快，产品具有一定的机械强度，因此在实际的工业应用中可以发挥重要作用。