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

<table>Calibration curve for the vanadium (IV) etioporphyrin III oxide solution in acetone using the height of the absorbance of the <i>α</i> peak as a function of the concentration.</table>

International Journal of Photoenergy

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Figure 7

Figure 7: Effects of UV-Vis Irradiation on Vanadium Etioporphyrins Extracted from Crude Oil and the Role of Nanostructured Titania 