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We propose a low temperature approach based on combining an electrospinning methodology and reactive sputtering processes to realise a porous mesh of polyethersulfone (PES) fibers (∼700 nm in diameter) wrapped by TiO2 nano-sheaths, active under UV illumination. The mesh has a porosity as high as ∼91% in volume and was prepared at T ≤ 160 °C. The effectiveness of the TiO2/PES mesh under UV was proved by Methylene Blue (MB) dissociation experiments and related to the TiO2 coverage properties, namely its thickness (∼15 nm), its nano-structuring (grains diameter 8–10 nm) and lattice structure (anatase) that improve the photo-activity action. The combination of electro-spinning plus sputtering processes lays the basis for high porosity and low cost, high throughput, high yield and flexible purifying filter technologies.
Royal Society of Chemistry
Publication date: 
1 Jan 2015

A Alberti, C Bongiorno, G Pellegrino, S Sanzaro, E Smecca, GG Condorelli, AE Giuffrida, G Cicala, A Latteri, G Ognibene, A Cassano, A Figoli, C Spinella, A La Magna

Biblio References: 
Volume: 5 Issue: 90 Pages: 73444-73450
RSC Advances