State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences , Lanzhou 730000, People's Republic of China.
University of Chinese Academy of Sciences , Beijing 100049, People's Republic of China.
ACS Nano. 2017 Jan 24;11(1):1113-1119. doi: 10.1021/acsnano.6b08348. Epub 2017 Jan 5.
Superwetting surfaces require micro-/nanohierarchical structures but are mechanically weak. Moreover, such surfaces are easily polluted by amphiphiles. In this work, inorganic adhesives are presented as a building block for construction of superwetting surfaces and to promote robustness. Nanomaterials can be selected as fillers to endow the functions. We adopted a simple procedure to fabricate underwater superoleophobic surfaces by spraying a titanium dioxide suspension combined with aluminum phosphate binder on stainless steel meshes. The surfaces maintained their excellent performance in regard to oil repellency under water, oil/water separation, and self-cleaning properties after even 100 abrasion cycles with sandpaper. Robust superwetting surfaces favored by inorganic adhesives can be extended to other nanoparticles and substrates, which are potentially advantageous in practical applications.
超润湿表面需要微纳分级结构，但机械强度较弱。此外，此类表面容易被两亲分子污染。在这项工作中，无机粘合剂被用作构建超润湿表面和提高其坚固性的构建块。纳米材料可以被选择作为填充物来赋予功能。我们采用了一种简单的方法，通过喷涂二氧化钛悬浮液与磷酸铝粘结剂在不锈钢网上来制备水下超疏油表面。即使经过 100 次砂纸磨损循环，这些表面在水下的疏油性、油水分离和自清洁性能方面仍保持着优异的性能。由无机粘合剂支持的坚固的超润湿表面可以扩展到其他纳米颗粒和基底，这在实际应用中具有潜在的优势。
