OICC Press Journal of Nanostructure in Chemistry 2193-8865 5 2 (June 2015) 2015 03 18 Study of photocatalyst magnesium aluminate spinel nanoparticles 10.1007/s40097-014-0135-9 EN Atikur Rahman Department of Metallurgical and Materials Engineering, National Institute of Technology Srinagar, Srinagar, 190006, IN R. Jayaganthan Department of Metallurgical and Materials Engineering & Centre of Nanotechnology, Indian Institute of Technology Roorkee, Roorkee, 247667, IN Journal Article 2015 03 18 Abstract 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.