Zhu Yunhu, Feng Aixin, Yu Jinhai, Zhao Pu
College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou, 325035, People's Republic of China.
Rui'an Graduate College, Wenzhou University, Wenzhou, 325206, People's Republic of China.
Nanotechnology. 2023 Nov 7;35(4). doi: 10.1088/1361-6528/ad00c2.
With the continuous development of society, the discharge of oily wastewater in daily life and industry has gradually increased, causing considerable damage to the environment, and how to effectively treat oily wastewater is an urgent problem. In this paper, a simple method is proposed to prepare superhydrophobic stainless steel mesh with pH response. The relationship between the ratio of mixed thiols and the surface wettability was explored, as well as the morphology, chemical composition, and pH-responsive mechanism of the stainless steel mesh surface were analyzed, and the separation efficiency, recycling ability, and backwashing ability of the mesh were explored by oil-water separation experiments. It was found that when the molar fraction of 11-mercaptoundecanoic acid and 1-decanethiol in the mixed mercaptan was 2:3, the water contact angle of the surface at this point was 156.5 ± 1°, with pH response characteristics and good oil-water separation efficiency, backwashing and recycling capabilities.
随着社会的不断发展，日常生活和工业中含油废水的排放量逐渐增加，对环境造成了相当大的破坏，如何有效处理含油废水是一个亟待解决的问题。本文提出了一种制备具有pH响应性超疏水不锈钢网的简单方法。探究了混合硫醇比例与表面润湿性之间的关系，分析了不锈钢网表面的形貌、化学成分及pH响应机理，并通过油水分离实验探究了该网的分离效率、回收能力和反冲洗能力。研究发现，当混合硫醇中11-巯基十一烷酸和1-癸硫醇的摩尔分数为2:3时，此时表面的水接触角为156.5±1°，具有pH响应特性以及良好的油水分离效率、反冲洗和回收能力。
