Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania

<table>UV-Vis absorbance spectra as a function of illumination time in the presence of the N-TiO<sub>2</sub>/Cu nanomaterial with the crude oil extracts: (a) COE-(N-TiO<sub>2</sub>/Cu) and (b) COEW-(N-TiO<sub>2</sub>/Cu). The insets show the bands observed at 530 nm and 569 nm with the background subtracted.</table>

International Journal of Photoenergy

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Figure 5

Figure 5: Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania 