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Flexible organic fabrics coated with titania find wide applications in pollutant degradations and antibiosis. Because of the enhanced charge separations, TiO₂ with one-dimensional nanostructures exhibits photocatalytic activity superior to that of nanoparticulate films; however, only the later has been achieved on organic substrates through commonly sol-gel techniques till now. In this study, radially aligned TiO₂ nanowires were precipitated on polyester fabrics through multi-steps of surface roughening, sol-gel TiO₂ seeding, hydrogen titanate nanobelts precipitation, and finally sulfuric acid treatment. Both mesoporous anatase TiO₂ nanowires and single-crystalline rutile TiO₂ nanorods have been achieved, which, together with some unchanged titanate nanobelts, exhibited an overall narrowed band gap of ca. 2.50 eV. The TiO₂ nanowires on flexible PET fabrics showed higher photocatalytic activity towards …