کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
582385 | 1453166 | 2009 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Titanium dioxide-mediated heterogeneous photocatalytic degradation of terbufos: Parameter study and reaction pathways
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Titanium dioxide-mediated heterogeneous photocatalytic degradation of terbufos: Parameter study and reaction pathways Titanium dioxide-mediated heterogeneous photocatalytic degradation of terbufos: Parameter study and reaction pathways](/preview/png/582385.png)
چکیده انگلیسی
The photocatalytic degradation of terbufos in aqueous suspensions was investigated by using titanium dioxide (TiO2) as a photocatalyst. About 99% of terbufos was degraded after UV irradiation for 90Â min. Factors such as pH of the system, TiO2 dosage, and presence of anions were found to influence the degradation rate. Photodegradation of terbufos by TiO2/UV exhibited pseudo-first-order reaction kinetics, and a reaction quantum yield of 0.289. The electrical energy consumption per order of magnitude for photocatalytic degradation of terbufos was calculated and showed that a moderated efficiency (EEOÂ =Â 71Â kWh/(m3Â order)) was obtained in TiO2/UV process. To obtain a better understanding of the mechanistic details of this TiO2-assisted photodegradation of terbufos with UV irradiation, the intermediates of the processes were separated, identified, and characterized by the solid-phase microextraction (SPME) and gas chromatography/mass spectrometry (GC/MS) technique. The probable photodegradation pathways were proposed and discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 162, Issues 2â3, 15 March 2009, Pages 945-953
Journal: Journal of Hazardous Materials - Volume 162, Issues 2â3, 15 March 2009, Pages 945-953
نویسندگان
Ren-Jang Wu, Chiing-Chang Chen, Ming-Hung Chen, Chung-Shin Lu,