Magnetically separable Cd/CdS-ZnFe2O4/α-Fe2O3 Z-scheme heterostructure for boosting the photo-Fenton removal of antibiotic

Synthesis and Photocatalytic Application of Magnetic CoFe2O4/Conjugated Poly(vinyl chloride) Derivative Nanocomposite

“…Magnetic semiconductors possess both semiconducting and magnetic properties. Because they can be easily recovered from water by means of magnetic attraction and usually possess visible-light photocatalytic activity, research on the development of magnetic semiconductors involved photocatalysts is currently receiving increasing attention. − CoFe 2 O 4 is a cubic spinel phase magnetic semiconductor. − As a semiconductor material, CoFe 2 O 4 is capable of absorbing the entire visible range of light due to its narrow bandgap (1.3–1.5 eV). , Moreover, it is rather stable against photochemical corrosion. − As a ferromagnetic material, CoFe 2 O 4 can be readily recovered from water by means of magnetic attraction. − Therefore, CoFe 2 O 4 is a promising photocatalyst with both magnetic recoverability and visible-light activity. But, due to the sluggish transfer and speedy recombination of its h + and e – , CoFe 2 O 4 takes on only an ordinary photocatalytic activity. − As a consequence, many studies have hitherto been dedicated to enhancing the photocatalytic activity of CoFe 2 O 4 by exploiting different modification ways. − It was discovered that coupling CoFe 2 O 4 with other semiconductors to form heterojunction can greatly lessen the recombination and facilitate the transfer of h + and e – , producing better photocatalytic activity. − But, a majority of the exploited modifying agents only induced a rather limited enhancement in the photocatalytic activity of CoFe 2 O 4 , and they are also uneconomical in cost.…”