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Host University: Cornell
Progress:
Quarterly Report: April 1-June 30, 2009
Titanium dioxide (TiO2) is one of the most promising semiconductor photocatalyst material, which has been extensively studied for the environmental purification applications, due to its good characteristics of powerful oxidation power, chemical stability and nontoxicity. Anatase TiO2/PAN or SiO2 fibers were prepared by sol-gel process and eletrospinning technique under low temperature condition. The photocatalytic activity of the TiO2/PAN fibers was measured by using the decomposition rate of aldicarb. The degradation of aldicarb in solution under UV irradiation showed the good photocatalytic activity of the prepared anatase TiO2/PAN fibers. During the analysis of the aldicarb treated sample by liquid chromatography (LC) with diode array detector (DAD), an unidentified peak was found at relative retention time (RT) 3.9 min when compared to aldicarb and major metabolites, aldicarb sulfoxide, and aldicarb sulfone. FTIR and LC-MS/MS techniques were used to confirm the identity of the degradation product as 2-propenal, 2-methyl- O-[(methylamino) carbonyl] oxime.
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