Papers by Keyword: Ferric Stearate

Abstract: In this work, ferric stearate, ferrocene and nickel N,N-dibuty dithiocarbamate (NiDBC) were utilized as photocatalyst for the decolorization of methylene blue (MB) aqueous solutions under sunlight irradiation. Pure MB solution was used as reference. Absorption intensities and surface morphology of these photocatalyst were investigated by Diffuse Reflectance Spectroscopy (DRS) and Scanning Electron Microscopy (SEM).The study indicated that ferric stearate had minimal promotion to the decolorization of MB aqueous solutions; and ferrocene exhibited better photocatalysis ability after had been irradiated 60 hours. In this study, NiDBC showed the best photocatalysis ability from the beginning. Furthermore, NiDBC enhanced the decolorization of MB after been irradiated for 31 hours. And after being irradiated 270 hours, the MB aqueous was completely decolorized by NiDBC.

Abstract: In this paper, we have studied the photocatalytic activity of TiO₂ which was modified by ferric stearate; ferrocene and nickel N,N-dibuty dithiocarbamate (NiDBC) , respectively. Innovatively, methylene blue (MB) was used as model pollutant. Under visible light irradiation, this paper studied the effect of the photocatalytic degradation of MB. The result shows that when the mass ratio is 5:1, the catalytic effect is C>B>A. When mass ratio is 1:1, the catalytic effect is B>C>A. Another result shows that with the increase of the amount TiO₂, catalytic effect of TiO₂ modified by ferric stearate significantly increases, otherwise, TiO₂ modified by ferrocene and NiDBC were different.

Abstract: The synergistic effects of ferric stearate, ferrocene and nickel N,N-dibuty dithiocarbamate (NiDBC) on photocatalysis were studied. Absorption intensities and redox abilities of these pholocatalyst compounds were investigated by Diffuse Reflectance Spectroscopy (DRS) and cyclic voltammetry. The study indicated that adding Ferric stearate to either ferrocene or NiDBC reduced the absorption intensity at the range of 400-550nm. Mixed with NiDBC, the absorbance ranges of ferric stearate and ferrocene were both broadened from 200-550nm to 200-700nm. The results of cyclic voltammetry indicated that redox ability of ferrocene was inhibited by ferric stearate. Furthermore, accession of NiDBC may enhance the inhibition. NiDBC reduced the redox ability of ferric stearate as well.

Abstract: A ferric stearate electrode was made by doctor-blade methods using the Fluorine tin oxide (FTO) conductive glass. The electrochemical behavior of ferric stearate electrode was studied by the cyclic voltammetry. The electro-catalytic effects of ferric stearate on H2O2 were also investigated by cyclic voltammetry.