Immobilization of hydrothermally produced TiO2 with different phase composition for photocatalytic degradation of phenol

摘要: Abstract Hydrothermally produced TiO 2 powders with different phase composition (anatase, rutile and mixed phase) were immobilized on glass fibers tested in the phenol mineralization process. Both H O used as oxygen donors, their performances compared those of same samples slurries. The catalytic properties crystalline phases, anatase, show trend slurry samples: pure displays highest efficiency presence , while containing anatase improve photodegradation efficacy . It was suggested that stability photogenerated electron–hole couple allows high activity relevant chemisorption causes A four parameters kinetics model shows both reaction steps, degradation intermediates, are photoactivated by Photoactivity coated is generally lower than slurries, even if efficiencies almost comparable when oxidation performed much donor As a matter fact, morphology catalysts chestnut burr aggregates large rods fiber, which less compact small particles. This preserves surface area from coarsening effects; thus, more active species, photocatalytic affected immobilization.