نمونه کار مقاله : ساخت و بررسی کاتالیست PMA-HMT-Ni

Abstract In recent years, chemical preparation and application of polyoxometalates especially as photocatalysts have received great deal ofattentions because of its unique characteristics such as thermal stability, high acidity, high oxidation strength and structural diversity. In this research, Phosphomolybdic acid -hexamine-nickel hybrid PMA-HMT-Ni was prepared and used as a photocatalyst adsorbent in the decolorization and removal of methylene blue and rhodamine B dyes. Phosphomolybdic acid-hexamine-nickel hybrid PMA-HMT-Ni compound is a water-insoluble compound synthesized as an effective photocatalyst by Fourier Transform-Infrared Spectroscopy, elemental analysis, X-ray diffraction, photometric spectroscopy, partial reflection, thermal analysis and scanning electron microscopy were identified. The effect of various parameters such as ambient pH, irradiation time, and initial dye concentration on decolorization under sunlight absorption was studied. The results showed that these particles effectively adsorb Rhodamine B and Methylene Blue and destroy the radiation. The decolorization mechanism was investigated by the addition of dihydrogen, hydroxyl, superoxide, cavity and electron donor materials. The reduction of decolorization in the presence of benzoquinone confirms the presence of superoxide groups in color degradation. This hybrid can be recyclable and can be reused for decolorization.