کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1315307 | 976017 | 2006 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photocatalytic cleavage of C–F bond in pentafluorobenzoic acid with titanium dioxide-P25 Photocatalytic cleavage of C–F bond in pentafluorobenzoic acid with titanium dioxide-P25](/preview/png/1315307.png)
The photocatalytic C–F bond cleavage in pentafluorobenzoic acid (PFBA) with TiO2-P25 using UV-C light has been investigated under different conditions. Complete cleavage of C–F is observed with TiO2-P25 under UV-C light irradiation. Oxidants such as IO4−, BrO3−, S2O82−, H2O2 and ClO3− ions enhance the defluoridation of PFBA. The order of their activities is IO4− > H2O2 > S2O82− ≈ BrO3− > ClO3−. C–F cleavage is also influenced by the addition of inorganic anions and metal ions. The defluoridation intermediates were analyzed by GC-MS technique.
UV-C light is found to be more efficient than UV-A light in the photocatalytic cleavage of C–F bond in pentafluorobenzoic acid using TiO2-P25. Oxidants, inorganic anions and metal cations have strong influence on the defluoridation rate. Figure optionsDownload as PowerPoint slide
Journal: Journal of Fluorine Chemistry - Volume 127, Issue 9, September 2006, Pages 1204–1210