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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.12 [2005] >
IJCT Vol.12(1) [January 2005] >
| Title: | Photocatalysed degradation of a fungicide, thiram in aqueous suspension of titanium dioxide |
| Authors: | Haque, M M
Muneer, M |
| Keywords: | Photocatalysis
fungicide
thiram
titanium dioxide
semiconductor |
| Issue Date: | Jan-2005 |
| Publisher: | CSIR |
| IPC Code: | C02F 1/00 |
| Abstract: | Photocatalysed degradation of a fungicide
derivative, thiram has been investigated in aqueous suspensions of titanium
dioxide as a function of irradiation time under a variety of conditions. The
degradation kinetics were studied under different conditions such as pH,
catalyst concentration, substrate concentration, different types of TiO2
and in the presence of electron acceptors such as hydrogen peroxide (H2O2),
potassium bromate (KBrO3) and ammonium persulphate (NH4)2S2O8
besides molecular oxygen. The degradation rates were found to be strongly
influenced by all the above parameters. The photocatalyst, Degussa P25 was
found to be more efficient as compared to other photocatalysts tested. All the
electron acceptors markedly enhanced the degradation of the compound under
investigation. The efficiency of degradation was found to be slower under
sunlight as compared to the artificial light source. The degradation products
were analyzed by GC-MS technique and probable pathways for the formation of
products are proposed. |
| Page(s): | 68-74 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.12(1) [January 2005]
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