Shami Zahed, Holakooei Parvin
Department of Chemistry, Faculty of Science, University of Kurdistan, Pasdaran Boulevard, Daneshgah Street, Sanandaj 66177-15175, Iran.
ACS Omega. 2020 Mar 9;5(10):4962-4972. doi: 10.1021/acsomega.9b03861. eCollection 2020 Mar 17.
Stimuli-responsive polymer architectures are attracting a lot of interest, but it still remains a great challenge to develop effective industrial-scale strategies. A single-stage and cost-effective approach was applied to fabricate a three-dimensional (3D) smart responsive surface with fast and reversibly switchable wetting between superhydrophobicity and superhydrophilicity/underwater superoleophobicity properties induced by photo and heat stimuli. Commercially available PVDF and P25TiO as starting materials fabricated with a scaled-up electrospinning approach were applied to prepare 3D smart switchable PVDF-P25TiO nanotextile superwetted by both UV and solar light that is simply recovered by heat at a reasonable time. The superhydrophilic/underwater superoleophobic photo-induced nanotextile will act in "water-removing" mode in which water quickly passes through and the oil is blocked on the surface. An acceptable recycling, reusing, and superior antifouling and self-cleaning performance arising from a TiO photocatalytic effect makes it highly desired in a green scaled-up industry oily wastewater treatment technology. With these advantages, a large-scale industrial production process can be simply simulated by applying a conducting mesh-like collector substrate.
刺激响应性聚合物结构正吸引着广泛关注，但开发有效的工业规模策略仍然是一项巨大挑战。采用了一种单阶段且具有成本效益的方法来制造三维（3D）智能响应表面，该表面在光和热刺激下能在超疏水性与超亲水性/水下超疏油性之间实现快速且可逆的润湿性切换。以市售的聚偏氟乙烯（PVDF）和P25二氧化钛（P25TiO）为起始材料，通过放大的静电纺丝方法制备出3D智能可切换PVDF - P25TiO纳米织物，其在紫外光和太阳光下均能实现超润湿，并且通过加热能在合理时间内简单地恢复原状。超亲水/水下超疏油的光诱导纳米织物将以“脱水”模式发挥作用，即水快速通过而油被阻挡在表面。由二氧化钛光催化效应产生的可接受的回收、再利用以及卓越的防污和自清洁性能，使其在绿色规模化工业含油废水处理技术中备受期待。凭借这些优势，通过应用类似导电网的收集器基板，可以简单地模拟大规模工业生产过程。
