| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 177448 | Dyes and Pigments | 2008 | 8 Pages |
Abstract
The photodegradation products of 4,4′-dinitrostilbene-2,2′-disulfonic acid (DNSDA), 4-amino-4′-nitrostilbene-2,2′-disulfonic acid (ANSDA) and 4,4′-diaminostilbene-2,2′-disulfonic acid (DASDA) imparted by UV, TiO2/UV and Fe2+/H2O2/UV were characterized by IC, HPLC and LC-ESI-MS/MS. Direct photolysis with UV light allowed the transformation of trans-isomers to the corresponding cis-isomers followed by degradation to aromatic aldehydes and carboxylic acids. Whilst both TiO2/UV and Fe2+/H2O2/UV processes mineralized the model compounds, Fe2+/H2O2/UV process was more rapid than TiO2/UV.
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Authors
R. Nageswara Rao, N. Venkateswarlu,