In this work, SrMnO3 nanoparticles were successfully synthesized using
dimethylglyoxime (DMG) and triethylenepantamine (TEPA) as capping
agent and alkaline agent respectively. To achieve the desired sample with
high homogeneity and the fine size, various parameters such as capping
agent, alkaline agent and temperature of calcination were changed. SrMnO3
nanostructures with different morphologies such as unique sphere-like
and hierarchical were successfully prepared. Then on the surface of the
optimum sample, silver nanoparticles were doped. The as-synthesized
nanostructures were characterized by thermal gravimetric analysis (TGA),
X-ray diffraction (XRD), transmission electron microscopy (TEM), field
emission scanning electron microscopy (FESEM), Fourier transform
infrared (FT-IR) spectroscopy, energy dispersive X-ray microanalysis
(EDX) and UV–Vis diffuse reflectance analysis (DRS). The photocatalytic
degradation of the rhodamine B, methyl orange, murexide and methylene
blue as water pollutants were investigated. According to the results,
photocatalytic activity of SrMnO3/Ag nanostructures were better and
degradation percent of rhodamine B as a cationic pollutant was more than
the other dyes.
کلید واژگان :
DMG Nanocomposites Nanostructures Photocatalyst SrMnO3 Water pollutant
