抽象的

Synthesis and characterization of ZnO and MgO nanoparticles and ZnO/MgO nanocomposite and their application for preparation of zinc phosphate dental cement

Mohammad Ali Karimi, Mohammad Mazloum Ardakani, Reza Asadiniya, Said Haghdar Roozbahani

We report here the synthesis of nanoparticles of ZnO and MgO and ZnO/ MgO nanocomposite through reactions of zinc acetate and magnesium acetate solutions with tetramethylammoniumhydroxide (TMAH) solution in the presence of polyvinyl pyrrolidone (PVP) by sonochemical method. At first, nanoparticles of ZnO and MgO were synthesized by the reaction of Zn(CHCOO3)2 and Mg(CHCOO3)2with TMAH in the presence of PVP and constant frequency ultrasonic waves. Then, ZnO/MgO nanocomposite was prepared through reaction of magnesium acetate with TMAH in the presence of ZnO nanoparticles and PVP as structure director using ultrasonic-assisted method. The effects of different parameters on particle size and morphology of final ZnO and MgO powders and ZnO/MgO nanocomposite were optimized by ‘one at a time’ method. Both synthesized ZnO and MgO nanoparticles and ZnO/MgO nanocomposite were successfully applied to the preparation of zinc phosphate dental cement.