Abstract A superhydrophobic halloysite-based mesh was facilely prepared by spraying epoxy/hexadecyltrimethoxysilane-halloysite nanotubes (HDTMS-HNTs) on stainless steel mesh. The as-prepared mesh was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and optical contact angle meter (OCA). The HNTs modified by HDTMS not only enhanced surface roughness, but also endowed hydrophobicity of the mesh. The mesh, with a static water contact angle of 154° and a sliding angle of 1.5°, was applied to separate a series of oil-water mixtures, such as n-hexane-water, isooctane-water and petroleum ether-water, with high separation efficiency of over 98%. The mesh still kept separation efficiency approximately 98.5% even after 25 separation cycles for n-hexane-water mixture separation. More importantly, the mesh is durable enough to withstand heat, chemical and mechanical challenges, such as hot water, strong alkaline, strong acid and sand abrasion, and high hydrostatic pressure. The as-prepared mesh will be a promising material in oil-water separation, because of the simple, economical and easily scalable preparation method and the excellent separation performance in radical oil-water separation.

中文翻译：

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一种用于高效油水分离的超疏水埃洛石基网的简便制备

摘要 通过在不锈钢网上喷涂环氧/十六烷基三甲氧基硅烷-埃洛石纳米管（HDTMS-HNTs），制备了一种超疏水的埃洛石基网。通过傅里叶变换红外光谱 (FT-IR)、X 射线衍射 (XRD)、扫描电子显微镜 (SEM) 和光学接触角仪 (OCA) 对制备的网格进行表征。HDTMS改性的HNTs不仅提高了表面粗糙度，而且赋予了网状物的疏水性。静水接触角为154°，滑动角为1.5°的筛网用于分离正己烷-水、异辛烷-水和石油醚-水等一系列油水混合物，分离效率高达98%以上。即使在 25 个正己烷-水混合物分离循环后，筛网仍保持约 98.5% 的分离效率。更重要的是，网布足够耐用，可以承受热、化学和机械方面的挑战，例如热水、强碱、强酸和沙粒磨损以及高静水压力。由于制备方法简单、经济且易于扩展，并且在自由基油水分离中具有优异的分离性能，所制备的筛网将成为油水分离的有前途的材料。