Composite polydopamine-based TiO2 coated mesh with restorable superhydrophobic surfaces for wastewater treatment

Various pollutants in wastewater including water-insoluble oils and water-soluble toxic organic pollutants, have been threatening ecosystems human health, making purification difficult. Inspired by the hierarchical structures chemical compositions of lotus leaf, we combined usage polydopamine (PDA) chemistry photocatalytically active TiO2 to develop a facile approach toward composite PDA-based coated mesh with restorable superhydrophobicity. In this procedure, PDA assisted loading nanoparticles onto stainless steel result micro/nanoscale surface was achieved via single-step solvothermal method. After modified 1H, 2H, 2H-perfluorodecyltriethoxysilane, became superhydrophobic. The exhibited enhanced superhydrophobicity, excellent environmental stability, robust resistance high mechanical durability. Moreover, it has demonstrated separation capacity extraordinary recyclability for various collection from water due its special Importantly, such possessed photocatalytic activity embedded TiO2, which allowed effective degradation under UV irradiation, representing plausible way restore superhydrophobic decomposing attached contaminants. This investigation suggests green prepare materials restored wetting property, will be useful purification.