Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-4838, Tehran, Islamic Republic of Iran.
Ultrason Sonochem. 2012 Mar;19(2):300-6. doi: 10.1016/j.ultsonch.2011.03.019. Epub 2011 Mar 24.
Nanoparticles of a two-dimensional coordination polymer, {[Pb(L)(μ(1,1)-NCS)(H(2)O)]}(n) (1), (L(-)=1H-1,2,4-triazole-3-carboxylate), have been synthesized by a sonochemical process and characterized by scanning electron microscopy, X-ray powder diffraction, IR spectroscopy and elemental analyses. The thermal stability of compound 1 both its bulk and nano-size has been studied by thermal gravimetric (TG) and differential thermal (DTA) analyses and compared each other. Concentration of initial reagents effects and the role of power ultrasound irradiation on size and morphology of nano-structured compound 1, have been studied. Calcination of the single crystals and nano-sized compound 1 at 400 °C under air atmosphere yields mixture of PbS and Pb(2)(SO(4))O nanoparticles. Results show that the size and morphology of the PbS and Pb(2)(SO(4))O nanoparticles are dependent upon the particles size of compound 1. A decrease in the particles size of compound 1 leads to a decrease in the particles size of the PbS and Pb(2)(SO(4))O.
二维配位聚合物纳米粒子，{[Pb(L)(μ(1,1)-NCS)(H(2)O)]}(n) (1)，(L(-)=1H-1,2,4-三唑-3-羧酸根)]，通过超声化学法合成，并通过扫描电子显微镜、X 射线粉末衍射、红外光谱和元素分析进行了表征。通过热重分析（TG）和差热分析（DTA）研究了化合物 1 的块状和纳米尺寸的热稳定性，并对其进行了比较。研究了初始试剂浓度的影响以及功率超声辐射对纳米结构化合物 1 尺寸和形态的作用。在空气气氛下，将单晶和纳米尺寸的化合物 1 在 400°C 下煅烧，得到 PbS 和 Pb(2)(SO(4))O 纳米粒子的混合物。结果表明，PbS 和 Pb(2)(SO(4))O 纳米粒子的尺寸和形态取决于化合物 1 的颗粒尺寸。化合物 1 颗粒尺寸的减小导致 PbS 和 Pb(2)(SO(4))O 的颗粒尺寸减小。
