Photocatalytic Degradation of Pendimethalin in the Presence of Titanium Dioxide
摘要:
Photolysis of an aqueous methanolic solution of pendimethalin (I), carried out under UV light in the presence of TiO2 for 7 h, led to about 50% decomposition of I in contrast with 8% without TiO2. Among the six photoproducts isolated, two have been identified as 1-(1-ethylpropyl)-5,6-dimethyl-7-nitrobenzimidazole (II) and 5,6-dimethyl-7-nitrobenzimidazole (III) on the basis of spectroscopic data. Moreover, GC-MS data gave indications of two minor photoproducts, N-propyl-2-nitro-6-amino-3,4-xylidine (VI) and 2,3-dimethyl-5-nitro-6-(hydroxyamino)phe (VII).
Photocatalytic Degradation of Pendimethalin in the Presence of Titanium Dioxide
作者:Goutam K. Pandit、Srikumar Pal、Asit K. Das
DOI:10.1021/jf00049a031
日期:1995.1
Photolysis of an aqueous methanolic solution of pendimethalin (I), carried out under UV light in the presence of TiO2 for 7 h, led to about 50% decomposition of I in contrast with 8% without TiO2. Among the six photoproducts isolated, two have been identified as 1-(1-ethylpropyl)-5,6-dimethyl-7-nitrobenzimidazole (II) and 5,6-dimethyl-7-nitrobenzimidazole (III) on the basis of spectroscopic data. Moreover, GC-MS data gave indications of two minor photoproducts, N-propyl-2-nitro-6-amino-3,4-xylidine (VI) and 2,3-dimethyl-5-nitro-6-(hydroxyamino)phe (VII).