Review on augmentation in photocatalytic activity of CoFe2O4 via heterojunction formation for photocatalysis of organic pollutants in water

Publication date: Available online 24 July 2019Source: Journal of Saudi Chemical SocietyAuthor(s): Sonu, Vishal Dutta, Sheetal Sharma, Pankaj Raizada, Ahmad Hosseini-Bandegharaei, Vinod Kumar Gupta, Pardeep SinghAbstractIn previous years, Cobalt ferrite has gained huge consideration in the field of semiconductor photocatalysis for waste water treatment. Cobalt ferrite and its derivatives own tunable magnetic properties which results in higher absorption capability in comparison with other photocatalyst semiconductors. In the current review, a brief overview of CoFe2O4 as a semiconductor photocatalyst is presented and ferromagnetic behaviour of CoFe2O4 is also discussed. Few drawbacks such as agglomeration, photocorrosion and recombination rate of electrons-holes are also discussed. For the enhancement of photocatalytic action of cobalt ferrite, the role of cobalt ferrite with type I, type II, direct Z-scheme, solid state Z-scheme heterojunctions, Schottky and p-n heterojunctions based on different heterostructures were also discussed. In conclusive outlook formation of cobalt ferrite based heterojunctions is best approach for the enhancement of photocatalytic performance. This is because heterojunction formation enhanced the rate of charge separation and thus reduced the electron–hole recombination. Herein, this review highlights the CoFe2O4 based heterojunctions for the photodegradation of noxious organic pollutants in water. Furthermore, the future expectations and challe...

Source: Journal of Saudi Chemical Society - July 25, 2019 Category: Chemistry Source Type: research