Sonochemical synthesis of nano-structured lead(II) complex: precursor for the preparation of PbO nano-structures

Abstract

Nano-structures of Pb(II) 2-D coordination polymers, [Pb₂(µ-2-bpdbe)₂(NO₃)₄] _n (1) {2-bpdbe = 1,6-bis(2-pyridyl)-2,5-diaza-1,5-hexadiene}, were synthesized by the sonochemical method. The structure of 1 may be considered a coordination polymer of lead(II) formed by bridging 2-bpdbe ligands, making a 2-D array of Pb(NO₃)₂ and 2-bpdbe. The thermal stability of the material was studied by thermal gravimetric and differential thermal analyses. The new nano-structure coordination polymer was characterized by scanning electron microscopy, elemental analysis, and IR spectroscopy. The sizes of the nano-structures were approximately 50 nm. Nano-particles were obtained by thermolysis of 1 in oleic acid as a surfactant at 180°C and 200°C under air atmosphere and the size of the PbO particles were about 60 nm.

Keywords:

• Nano-particle
• Sonochemical
• Coordination polymer
• Lead(II)
• Surfactant
• PbO

Acknowledgments

Support of this investigation by Tarbiat Modares University is gratefully acknowledged.