کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5372971 | 1504193 | 2016 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Study of adsorption and degradation of dimethylphthalate on TiO2-based photocatalysts Study of adsorption and degradation of dimethylphthalate on TiO2-based photocatalysts](/preview/png/5372971.png)
- DMP has been degraded and mineralized by heterogeneous photocatalysis.
- SG750, a synthesized photocatalyst, offers the best results.
- Surface Pt and Au particles do not improve degradation.
- The kinetic pattern fits the Langmuir-Hinshelwood model.
- FTIR observations correlate to adsorption constants from the Freundlich model.
This work studied the degradation and adsorption of dimethylphthalate (DMP) using various TiO2-based photocatalysts: TiO2 Aeroxide P25, Kronos vlp7000, Hombikat UV-100, Kemira 650 and a synthesized photocatalyst named SG750. As the photocatalysts with mixed anatase and rutile phases, P25 and SG750, showed greater activity than those of pure phase, an in-depth study was undertaken of these two catalysts in the adsorption and degradation of DMP. The degradation results were fitted with a high degree of correlation to the Langmuir-Hinshelwood model and those for adsorption to the Freundlich model. The Freundlich constants showed good correlation with FTIR observations of the DMP-P25 and DMP-SG750 interactions. These two photocatalysts were additionally modified by photodeposition with Pt and Au (0.5-1.5Â wt%) to study the effect of these metals on degradation and mineralization kinetics.
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Journal: Chemical Physics - Volume 475, 22 August 2016, Pages 112-118