This work provides a new approach and some experimental basis for the design and performance improvement of magnetic photocatalysts by innovatively incorporating MoS 2 as the active interlayer and integrating it with a mesoporous shell.įigure 1. Schematic illustration of the preparation process of Fe 3O 2 and Fe 3O TiO 2 (mTiO 2) core–shell photocatalysts (CTAB represents cetyltrimethylammonium bromide TBOT represents tetrabutyl titanate).įigure 2. (a) Photocatalytic degradation efficiency for MB (15 mg Meanwhile, the excellent light-harvesting ability and abundant reactive sites of the mesoporous TiO 2 shell further boost the photocatalytic efficiency of FMmT. The improved photocatalytic activity is closely related to the effective transport of photogenerated electrons by the active interlayer MoS 2 and the electron–hole separation caused by the MoS 2 heterojunction. kg −1), FMmT can achieve effective recycling with an applied magnetic field.Owing to the high saturation magnetization (43.1 A The corresponding degradation rates are 4.5, 4.3, and 3.1 times higher than those of pure TiO 2 separately. In addition, the photocatalytic degradation efficiencies of FMmT for methylene blue (MB), rhodamine B (RhB), and tetracycline (TC) are 99.4%, 98.5%, and 89.3% within 300 min, respectively. g −1), enhanced visible-light responsiveness (~521 nm), and remarkable photogenerated charge separation efficiency.It is found that FMmT possesses a high specific surface area (55.09 m 2 Herein, we synthesized magnetically separable Fe 3O TiO 2 (FMmT) photocatalysts via a simple, green, and template-free solvothermal method combined with ultrasonic hydrolysis. TiO 2 is the dominant and most widely researched photocatalyst for environmental remediation, however, the drawbacks, such as only responding to UV light (<5% of sunlight), low charge separation efficiency, and difficulties in recycling, have severely hindered its practical application.
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