| Autor: |
M. Abdennouri, A. Elhalil, M. Farnane, H. Tounsadi, F.Z. Mahjoubi, R. Elmoubarki, M. Sadiq, L. Khamar, A. Galadi, M. Baâlala, M. Bensitel, Y. El hafiane, A. Smith, N. Barka |
| Jazyk: |
angličtina |
| Rok vydání: |
2015 |
| Předmět: |
|
| Zdroj: |
Journal of Saudi Chemical Society, Vol 19, Iss 5, Pp 485-493 (2015) |
| Druh dokumentu: |
article |
| ISSN: |
1319-6103 |
| DOI: |
10.1016/j.jscs.2015.06.007 |
| Popis: |
Titanium dioxide was synthesized by the sol–gel method and platinum supported on titanium dioxide were prepared by a wet impregnation chemical process at different platinum contents. The prepared samples were dried over night at 110 °C and then calcined at 500 °C for 4 h. Structural and morphological characterization has been carried out by means of X-ray diffraction (XRD), differential scanning calorimetry–thermogravimetric analysis (DSC–TGA), Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), Brunauer–Emmett–Teller surface area measurement (BET) and transmission electron microscopy coupled to the energy dispersive spectroscopy (TEM/EDX). The adsorption performance and photocatalytic activity of the samples were investigated using two chlorophenoxy herbicides: 2,4-dichlorophenoxyacetic acid (2,4-D) and 2-(2,4-dichlorophenoxy) propionic acid (2,4-DP) as models of organic pollutants in water. The obtained results show that Pt/TiO2 exhibited higher photocatalytic activity than TiO2 particles for the degradation of the two selected herbicides. The photocatalytic activity increases by increasing the platinum yield in the catalyst. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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