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<table>Nitrogen adsorption-desorption isotherms of the r-TiO<sub>2</sub> and m-TiO<sub>2</sub> after calcination at 500°C for 2 h.</table>

International Journal of Photoenergy

fig4

Figure 4

Figure 4: Fabrication and Characteristics of Macroporous <svg style="vertical-align:-4.32pt;width:44.8125px;" id="M1" height="20.637501" version="1.1" viewBox="0 0 44.8125 20.637501" width="44.8125" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><g transform="matrix(.022,-0,0,-.022,.062,15.188)"><path id="x54" d="M592 498l-30 -3q-13 63 -31 89q-13 19 -33.5 25.5t-75.5 6.5h-70v-493q0 -60 16 -75.5t86 -19.5v-28h-286v28q68 4 83.5 19.5t15.5 75.5v493h-62q-60 0 -83 -7t-33 -24q-12 -17 -32 -90h-29q10 116 12 180h20q10 -16 21 -20.5t34 -4.5h395q19 0 28.5 5t21.5 20h21
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International Journal of Photoenergy

Fabrication and Characteristics of Macroporous Photocatalyst

Figure 4