Department of Chemistry, University of Idaho, Moscow, ID 83844, United States of America.
Ultrason Sonochem. 2014 Mar;21(2):892-900. doi: 10.1016/j.ultsonch.2013.08.025. Epub 2013 Sep 10.
Lead sulfide (PbS) quantum dots stabilized by 1,2-benzenedimethanethiol can be synthesized by mixing Pb(NO3)2 and Na2S solutions in ethanol under ultrasound irradiation. The PbS quantum dots (2.7 and 3.6 nm in diameter) are characterized by their absorption and fluorescence spectra in the near infrared region and by other surface analytical techniques. With addition of single-walled carbon nanotubes (SWNT) to the system, this ultrasound-assisted procedure allows attachment of PbS nanoparticles to SWNT surface via π-π stacking, thus providing a simple one-pot method for preparation of SWNT-PbS nanoparticle composite materials. Using the ultrasound-assisted method for synthesizing silica composites containing PbS nanoparticles by a sol-gel process is also described.
通过在超声辐射下将 Pb(NO3)2 和 Na2S 溶液混合在乙醇中，可以合成由 1,2-苯二甲硫醇稳定的硫化铅量子点。PbS 量子点（直径为 2.7 和 3.6nm）的特征在于其在近红外区域的吸收和荧光光谱以及其他表面分析技术。向该体系中加入单壁碳纳米管 (SWNT)，该超声辅助过程允许 PbS 纳米颗粒通过 π-π 堆积附着到 SWNT 表面，从而提供了一种简单的一锅法制备 SWNT-PbS 纳米颗粒复合材料的方法。还描述了通过溶胶-凝胶过程使用超声辅助方法合成含有 PbS 纳米颗粒的二氧化硅复合材料。
