Synthesis of self-cleaning and photoreactive spherical layered double oxide/polymer composite thin layers: Biofouling and inactivation of bacteria

Layered double oxide (LDO) photocatalyst microparticles were synthetized with special radial lamellar orientation. We presented that the 25.31 ± 2.34 μm LDO particles rough surface can incorporated in fluoropolymer solution and resulted a composite layer dual superhydrophobic photocatalytic properties high bacterial adhesion inactivation ability. Next content layers systematically increased (0, 20, 40, 60, 80 100 wt% LDO) which facilitated of bacteria by electrostatic interactions. The structure initial LDO/fluoropolymer composites was verified small angle X-ray scattering (SAXS), XRD SEM measurements. showed roughness hydrophobicity increase increasing loading. At 80/20 ratio apparent energy low enough to obtain (θw= 156.3° γstot= 2.7 mJ/m2). extent on increases because takes place preferentially lamellae. reason for this pronounced negatively charged hydrophilic onto positively surfaces is attraction between oppositely surfaces. detected scanning electron fluorescence microscopy crystal violet staining assay. Finally, adhered inactivated LED-light illumination due photoreactivity containing 12 ZnO phase.