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| Titel: |
Preparation of TiO2 Photocatalyst Using TiCl4 as a Precursor and its Photocatalytic Performance |
| Auteur: |
S. Qourzal M. Tamimi A. Assabbane A. Bouamrane A. Nounah L. Laanab Y. Ait-Ichou |
| Verschenen in: |
Journal of applied sciences |
| Paginering: | Jaargang 6 (2006) nr. 7 pagina's 1553-1559 |
| Jaar: |
2006 |
| Inhoud: |
Titania (TiO2) photocatalysts were prepared by aqueous hydrolysis of TiCl4 and deposition with NaOH at 400-900°C. The powders obtained have been characterized using X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscopy (SEM). The photocatalytic activities of the samples were also examined using the degradation of β-naphthol as a model reaction. As the calcination temperature increases, the anatase and rutile crystallite sizes increase. TiO2 powder calcined at 700°C exhibits much higher photocatalytic activity than commercial TiO2 Degussa P-25. The photodegradation rate of β-naphthol using TiO2 700°C particles was faster than that using TiO2 Degussa P-25 as photocatalyst by 2 times. Conversely, prolonged calcination at higher temperatures (900°C) is detrimental to photoactivity. |
| Uitgever: |
Asian Network for Scientific Information, Pakistan (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 46 van 65 gevonden artikelen
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