Abstract
Photocatalytic oxidation technology has been demonstrated to be an effectively method to remove thiophene from fuel. Herein, metallophthalocyanine/SnO2 (MTcPc/SnO2) composites were synthesized by a facile “in situ hydrothermal” technique, utilizing Sn(OH)4 and MTcPc as the precursors. The crystal structure, morphology and chemical environment of the catalysts were respectively confirmed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). Photocatalytic activities of MTcPc/SnO2 composites were evaluated by the oxidation of thiophene in fuel under visible light with O2 as the oxidant. Compared with pure SnO2, MTcPc/SnO2 presented a significantly enhanced photocatalytic activity for the degradation of thiophene in fuel under visible irradiation. The desulfurization reaction mechanism by molecular oxygen was proposed to be the formation of the SnO2/ZnTcPc–O2 complex.
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