Photoassisted Degradation of a Herbicide Derivative, Dinoseb, in Aqueous Suspension of Titania

<table>HPLC analysis of Dinoseb in an aqueous suspension of TiO<sub>2</sub>. Column C-18, eluent 70 : 30 (acetonitrile: water). Experimental conditions: 0.22 mM Dinoseb, <svg height="11.125" id="M2" style="vertical-align:-0.20064pt" version="1.1" viewbox="0 0 51.9375 11.125" width="51.9375" xmlns="http://www.w3.org/2000/svg">
<g transform="matrix(1.25,0,0,-1.25,0,11.125)">
<g transform="translate(72,-63.1)">
<text transform="matrix(1,0,0,-1,-71.95,63.35)">
<tspan style="font-size: 12.50px; " x="0" y="0">𝑉</tspan>
<tspan style="font-size: 12.50px; " x="10.652556" y="0">=</tspan>
<tspan style="font-size: 12.50px; " x="22.692945" y="0">1</tspan>
<tspan style="font-size: 12.50px; " x="28.944445" y="0">2</tspan>
<tspan style="font-size: 12.50px; " x="35.195946" y="0">5</tspan>
</text>
</g>
</g>
</svg> mL, photocatalyst TiO<sub>2</sub> (Degussa P25, 1 gL<sup>−1</sup>), immersion well photo reactor, 125 W medium pressure Hg lamp, absorbance was followed at 375 nm, continuous purging of air and stirring, irradiation time: (a) 0 min; (b) 2 min; (c) 4 min; (d) 6 min; (e) 8 min. Inset shows decrease in absorbance on irradiation of aqueous solution of Dinoseb containing TiO<sub>2</sub> under similar experimental conditions. Arrow shows the decrease in absorbance.</table>

The Scientific World Journal

fig1

Figure 1

Figure 1: Photoassisted Degradation of a Herbicide Derivative, Dinoseb, in Aqueous Suspension of Titania 