This paper discusses the synthesis of nanoparticles of ZnO and MgO and ZnO/MgO nanocomposite by the
sonochemical method. At first, nanoparticles were synthesized by the reaction of Zn(CHCOO3)
2 and
Mg(CHCOO3)
2 with tetramethylammonium hydroxide (TMAH) in the presence of polyvinyl pyrrolidone (PVP)
and constant frequency ultrasonic waves (sonochemical method). 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. After filtration, the synthesized solution was obtained containing
magnesium hydroxide in the presence of ZnO nanoparticles. It was calcinated at the temperature of 550 ºC, so
that ZnO/MgO nanocomposite could be produced. 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. Under optimum conditions, spongy shaped, uniformed and homogeneous nanostructured zinc oxide and
magnesium oxide powders were obtained with particle sizes of 25–50 and 30-60 nm, respectively. ZnO/MgO
nanocomposite was also obtained with more spongy morphology and particle size about 65 nm. Both
synthesized ZnO and MgO nanoparticles and ZnO/MgO nanocomposite were successfully applied to the
preparation of zinc polycarboxylate dental cement.
This paper discusses the synthesis of nanoparticles of ZnO and MgO and ZnO/MgO nanocomposite by the
sonochemical method. At first, nanoparticles were synthesized by the reaction of Zn(CHCOO3)
2 and
Mg(CHCOO3)
2 with tetramethylammonium hydroxide (TMAH) in the presence of polyvinyl pyrrolidone (PVP)
and constant frequency ultrasonic waves (sonochemical method). 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. After filtration, the synthesized solution was obtained containing
magnesium hydroxide in the presence of ZnO nanoparticles. It was calcinated at the temperature of 550 ºC, so
that ZnO/MgO nanocomposite could be produced. 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. Under optimum conditions, spongy shaped, uniformed and homogeneous nanostructured zinc oxide and
magnesium oxide powders were obtained with particle sizes of 25–50 and 30-60 nm, respectively. ZnO/MgO
nanocomposite was also obtained with more spongy morphology and particle size about 65 nm. Both
synthesized ZnO and MgO nanoparticles and ZnO/MgO nanocomposite were successfully applied to the
preparation of zinc polycarboxylate dental cement.
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