Stable temperature was attained during magnetic hyperthermia by Zn substituted magnetite nanoparticles.

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CuO-MgO nanocomposites were prepared by a solvothermal procedure. Analysis of the X-ray diffraction patterns of the nanoparticle samples showed the formation of minor second phase CuO in addition to the MgO as major phase. On the other hand, TEM images showed CuO minor phase nanoparticles embedded in the MgO matrix. Catalytic properties of these nanomaterials were then investigated with respect to increase in CuO component in the nanocomposite. Three different catalytic reactions for treatment of model pollutants were selected for this purpose. These were the catalytic reduction of p-nitrophenol, catalytic degradation of methyl orange and methylene blue. In all cases the catalytic activity was found to increase with amount of CuO in the nanocomposite. The catalytic efficiencies of all three reactions were high and followed zero-order kinetics. 17induction time increased in a systematic manner with CuO content (Fig. 10b). Possibly, dissolved Fig. 9 UV-vis spectra for degradation of MO by NaBH 4 in presence of CMS-0 (a) and CMS-1 catalyst (b).

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