Preparation of Mesoporous Titania Composites Using Pentablock Copolymer Templates via EISA Process
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Mesoporous titania composite samples were prepared in the presence of pentablock copolymer templates using the evaporation-induce self assembly (EISA) method. PLGA-PEO-PPO-PEO-PEO-PLGA pentablock copolymers were synthesized by attaching PLGA block to the both ends of a few kinds of Pluronic PEO-PPO-PEO triblock copolymers using step growth and ring-opening polymerization. Cerium and copper salts were also used to prepare mesoporus metal oxide composites with titania. The detailed nanostructure of mesoporous samples was characterized through small-angle X-ray scattering (SAXS), transmission electron microscopy (TEM), nitrogen adsorption analysis, X-ray diffraction (XRD), and UV absorbance. The surface area and crystalline structures of the mesoporous metal oxide composite samples were varied depending templates and composition. We also observed the variation of bandgap and photocatalytic properties using the samples.