| Autor: |
Chaudhary, L. S., Charhate, S. B., Dongale, T. D., Sharma, Kirankumar K., Sheikh, Arif D. |
| Zdroj: |
Emergent Materials; February 2024, Vol. 7 Issue: 1 p195-208, 14p |
| Abstrakt: |
In this investigation, the magnetic spinel ferrite CoFe2O4(CFO) nanoparticles (NPs) were prepared by chemical co-precipitation method followed by annealing at 200 °C, 400 °C, and 600 °C. After various characterizations, these CFO NPs were tested for their percentage of photocatalytic degradation of Methylene Blue (MB) under exposure to collected sunlight. The photocatalytic process requires a magnetic stirrer to keep the CFO NPs suspended in MB solution. The strong ferromagnetic nature of the CFO NPs aggregates on the polytetrafluoroethylene (PTFE)-coated magnetic needle, deteriorating photocatalytic decomposition of MB dye. This issue was addressed with the ultrasonication process, which maintains CFO NPs in colloidal form. In the field photocatalytic activity of CFO NPs annealed at 400 °C showed 99% degradation of MB under 60 min of collected sunlight exposure. Furthermore, CFO NPs were magnetically retrieved using an external magnet from the treated water and reused over 5 cycles. The CFO NPs have shown excellent photochemical stability with minimal photodegradation efficiency loss. This ultrasonication cycle strategy proposed in this work could significantly reduce the aggregation and keep the colloidal solution of strong magnetic NP photocatalysts for efficient degradation of dye under collected sunlight. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
Full text from SpringerLink