Photodegradation of rhodamine B over magnetically separable Fe3O4-TiO2 photocatalyst
| dc.contributor.author | Edirisinghe, D. I. U. | |
| dc.contributor.author | Jayaweera, P. M. | |
| dc.contributor.author | Palliyaguru, L. | |
| dc.date.accessioned | 2024-12-16T07:56:57Z | |
| dc.date.available | 2024-12-16T07:56:57Z | |
| dc.date.issued | 2019-09-12 | |
| dc.description.abstract | Titanium dioxide (TiO₂) is one of the most widely used materials in water purification. One of the largest disadvantages of using TiO₂ in water purification is the high cost and the secondary pollution associated with the catalyst regeneration process. Therefore, use of magnetic titania is highly effective as a catalyst material as it can be carried out via magnetic separation. Results of this investigation show that magnetic titania, Fe₃O₄⁻TiO₂ can be directly prepared from the HCl leachate of ilmenite. Further, the as-prepared composite was modified to increase TiO₂ percentage by removing a fraction of iron in the leachate using the anionic resin IRA-410Cl. According to the XRD analysis, the crystal planes (310) and (430) corresponding to the 2θ values of 32.62⁰ and 53.01⁰ respectively, were resulted from Fe₃O₄⁻ Further, for TiO₂, an XRD peak with the crystal plane (101) corresponds for the 2θ value of 23.21⁰ was also obtained. In the FTIR spectrum, the presence of peaks at 527 cm⁻¹ for Fe-O-Fe and at 1404 cm⁻¹ for Ti-O-Ti vibrational modes also confirm the chemical identity of the Fe₃O₄⁻TiO₂ composite. The mass susceptibility value of -4.3x10⁻³ indicates that it is sufficiently large for the recovery process via magnetic separation. Photodegradation efficiencies of Rhodamine B were tested using as- prepared magnetic titania & Degussa P25. Fe₃O₄⁻TiO2 composite bleached the colour by 50% in 25 min, whereas Degussa P25 needed only 18 min. Therefore, Fe₃O₄⁻TiO₂ may be having a good potential for the application in water purification. | |
| dc.identifier.citation | Proceedings of the Peradeniya University International Research Sessions (iPURSE) – 2019, University of Peradeniya, P 77 | |
| dc.identifier.isbn | 978-955-589-282-7 | |
| dc.identifier.uri | https://ir.lib.pdn.ac.lk/handle/20.500.14444/4872 | |
| dc.language.iso | en_US | |
| dc.publisher | University of Peradeniya, Sri Lanka | |
| dc.subject | Ilmenite | |
| dc.subject | Photocatalyst | |
| dc.subject | Rhodamine B | |
| dc.subject | Magnetic Fe₃O₄-TiO₂ composite | |
| dc.title | Photodegradation of rhodamine B over magnetically separable Fe3O4-TiO2 photocatalyst | |
| dc.type | Article |