The microspherical C-TiO2/Fe3O4 photocatalyst was synthesized through solvothermal method,and the morphology and the structure of the product were characterized by SEM and XRD.With methylene blue (MB) as the degradation target,the influence of the content of Fe3O4,photocatalytic time,catalyst quality,initial dye concentration and solution pH on the adsorption and photocatalytic performance were explored.Its recycle and regeneration ability,catalytic kinetic process and degradation mechanism were also investigated.The results showed that when the content of Fe3O4 was 2.5%,the morphology of as-synthesized C-TiO2/Fe3O4 was dominated by microspheres with the diameter of 3.41μm.Under UV irradiation,when the mass of 0.1g C-TiO2/Fe3O4 was used to degrade 25mg/L MB solution,the catalyst demonstrated good performance,achieving a catalyst efficiency of 57.35% at 90min.In addition,it was found that ·OH played a major role in the photocatalytic process of MB degraded by C-TiO2/Fe3O4,but the h+ and superoxide radicals had little or no effect.
Jing Yiqi, Li Yongzhuo, Wang Ruijuan
. Preparation of microspherical C-TiO2/Fe3O4 and its property in degrading methylene blue[J]. New Chemical Materials, 2024
, 52(12)
: 197
-202
.
DOI: 10.19817/j.cnki.issn1006-3536.2024.12.021
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