9/5/2023 0 Comments Tbot tio2 core shellTo overcome these intrinsic drawbacks, various efforts were made to modify TiO 2 materials. However, their performance is greatly limited by the wide energy band gap of approximately 3.2 eV, rapid electron–hole recombination, and relatively poor charge transport property. These features render TiO 2 highly promising in photocatalysts, dye-sensitized solar cells, energy storage, and biotechnology. Titanium dioxide (TiO 2) is one of the most extensively investigated metal oxides due to its fascinating features, such as low cost, polymorphs, good chemical and thermal stability, and excellent electronic and optical properties. The interfacial C–O–Ti bonds and the π-conjugated structures in the 2 nanosphere played a key role in the quick transfer of the excited electrons between PP and TiO 2, which greatly improved the photocatalytic efficiency in visible light. Under visible-light irradiation, the core–shell nanosphere displayed enhanced photocatalytic efficiency for rhodamine B degradation and good recycle stability. The core–shell structure allowed the absorption spectra of 2 to extend to the visible-light region. The covalent connection between PP and TiO 2 was established after the hydrothermal reaction. The thickness of the TiO 2 shell was controlled by the amount of TiO 2 precursor. A subsequent sol–gel and hydrothermal reaction was utilized to cover the TiO 2 shell on the surfaces of PP particles. The PP nanoparticles were synthesized by an enzyme-catalyzed polymerization in water. A novel core–shell structured 2 was developed by using phenolic polymer (PP) colloid nanoparticles as the core material. Compared to metal or semiconductor materials, polymers are rarely used as the core materials for fabricating core–shell TiO 2 materials. Core–shell structured TiO 2 is a promising solution to promote the photocatalytic effectiveness in visible light.
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