Ding Xiaohong, Chen Biya, Li Muchang, Liu Ruilai, Zhao Jinyun, Hu Jiapeng, Fu Xingping, Tong Yuejin, Lu Hanqing, Lin Jing
Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, College of Ecological and Resources Engineering, Wuyi University 354300 Wuyishan China.
College of Chemistry and Materials Science, Fujian Normal University 350007 Fuzhou China
RSC Adv. 2022 Jun 7;12(26):16835-16842. doi: 10.1039/d2ra02583c. eCollection 2022 Jun 1.
The formation of self-cleaning functions on silicone elastomers is crucial for practical applications but still challenging. In this study, superhydrophobic silicone elastomers (SHSEs) with a 3D-hierarchical microstructure were achieved during the curing process with the assistance of a homemade template. The micro-nano structure formed by the assistance of the template makes the silicone elastomer surface achieve robust superhydrophobicity with a WCA at ∼163°, which can easily self-clean, removing surface contamination. Also, TiO particles transferred from the template endow the surface with photocatalytic functions, which can degrade organic pollutants under UV irradiation. After sandpaper abrasion, the formed SHSE can maintain its excellent hydrophobicity and show liquid repellency to wine and coffee droplets. The SHSEs with self-cleaning functions have promising applications in water treatment, medical facilities, and wearable devices.
在硅橡胶上形成自清洁功能对于实际应用至关重要，但仍具有挑战性。在本研究中，借助自制模板，在固化过程中制备出具有三维分级微观结构的超疏水硅橡胶（SHSEs）。模板辅助形成的微纳结构使硅橡胶表面具有强大的超疏水性，水接触角约为163°，能够轻松实现自清洁，去除表面污染物。此外，从模板转移而来的TiO颗粒赋予表面光催化功能，可在紫外光照射下降解有机污染物。经过砂纸打磨后，形成的SHSE仍能保持其优异的疏水性，并对葡萄酒和咖啡液滴表现出拒液性。具有自清洁功能的SHSE在水处理、医疗设施和可穿戴设备等领域具有广阔的应用前景。
