Study of photocatalyst magnesium aluminate spinel nanoparticles

Magnesium aluminate spinel nanoparticles with different concentration of alumina(x = 0.1, 0.2, 0.3, 0.4 and 0.54) are synthesized by solid state reaction method. The synthesized products are characterized by powder X-ray diffraction and UV–Vis spectroscopy. The prepared nanoparticles exhibit a cubic structure with average crystallite size 25.4, 30.1, 31.2, 29.6 and 19.5 nm, respectively. The band gap values of magnesium aluminate spinel nanopartciles are found to increases with increase in alumina concentration(x = 0.1 to 0.54). Photocatalytic studies of the magnesium aluminate spinel nanoparticles are done by taking methylene blue as pollutants. Their degradation behavior has been discussed.