Development of a Photo-Fenton Catalyst Fe3O4/ TiO2 Coated by Co polymer Synthesis by γ-rays | ||||
| Egyptian Journal of Radiation Sciences and Applications | ||||
| Article 8, Volume 25, Issue 1, December 2012, Page 91-102 PDF (669.54 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejrsa.2012.1491 | ||||
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| Abstract | ||||
| PHOTO-FENTON CATALYSTS Fe3O4/TiO2 coated with a co-polymer (PVA/PAAc) to improve their capabilities of pollutant degradation has been investigated. Core-shell nanocomposites catalyst [(Fe3O4/PAAc/ PVA)/TiO2]/PAAc with average diameters of 50-60 nm was carried out by gamma irradiation. Aqueous solution (1% w/v) of 25 % PVA/ 75% PAAc was polymerized at low irradiation doses 1.66 kGy, then treated with Fe2+ / Fe3+ salts. Ammonia solution was added to obtain a precipitation of 20 nm Fe3O4/PVA/PAAc. The Photo-Fenton catalysts comprising Fe3O4 nanoparticles as a core and (PVA/PAAc) as a shell and TiO2 introduced, which later develop into a uniform polymer layer of PAAc. The polymer resembles a stabilizer for particles in nanosize without aggregation. The degradation of the Remazol Red dye (RR) dissolved in aqueous solutions was investigated using modified reactor contain ultra violet visible (UV-VIS) sources under the influence of 300 Gauss alternative magnetic field (M.F). | ||||
| Keywords | ||||
| Nanoparticls; Photo-Fenton reaction; polymer; γ-rays; magnetic oxide | ||||
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