Sol–gel synthesis of Mn2O3/Al2O3/SiO2 hybrid nanocomposite and application for removal of organic dye

Nanostructured CuAl2O4: Co-precipitation synthesis, optical and photocatalytic properties

“…The waste water of the textile factories is known to contain a large amount of different azo dyes and salts [12,13]. Methyl Orange (MO) is an organic azo dye which is used extensively in the different industries such as printing, textile and photographic.…”

Synthesis and characterisation of Fe 3 O 4 at MPTMS at Au nanocomposite by sol–gel method for the removal of methylene blue

“…This decrease in saturation and retentively is due to the non-magnetic nature of the MPTMS and Au coatings and it is proportional to the thickness of the non-magnetic coating on the nanoparticles surface. In the other hand the coercivity of Fe 3 O 4 at MPTMS at Au nanocomposites is higher than the other samples which could be attributed to the shape anisotropy of the surface [28][29][30]. The results show that the highest saturation magnetisation belongs to Fe 3 O 4 at MPTMS at Au sample and it is measured to be 16.412 emu/g.…”

Synthesis of ZnO/CuO nanocomposite immobilized on γ-Al2O3 and application for removal of methyl orange

“…As many dyes are potentially toxic, their release into water often can cause a serious hazard to aquatic organisms. Therefore their removal from industrial effluents has been a major environmental issue in recent years [2][3][4]. Methyl orange (MO), as an anionic dye, belongs to the azo group of dyes.…”

“…[11][12][13][14]. Alumina based adsorbents have several advantages, including stability, high surface area, possible reuse, short adsorption contact time and high mechanical properties [4,13,18]. Transition metal oxides have been entrapped by immobilization on the surface of γ-Al2O3 to improve their catalytic and absorptive activities.…”