Supercritical Phase Inversion to Produce Photocatalytic Active PVDF-coHFP_TiO₂ Composites for the Degradation of Sudan Blue II Dye.

ABSTRACT: TiO₂-loaded poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-coHFP) membranes were produced by supercritical CO₂-assisted phase inversion. Three different TiO₂ loadings were tested: 10, 20, and 30 wt% with respect to the polymer. Increasing the TiO₂ amount from 10 wt% to 20 wt% in the starting solution, the transition from leafy-like to leafy-cellular morphology was observed in the section of the membrane. When 30 wt% TiO₂ was used, the entire membrane section showed agglomerates of TiO₂ nanoparticles. These polymeric membranes were tested to remove Sudan Blue II (SB) dye from aqueous solutions. The adsorption/photocatalytic processes revealed that membrane morphology and TiO₂ cluster size were the parameter

SUBMITTER: Guastaferro M 

PROVIDER: S-EPMC9782530 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature