Size-Controlled Synthesis and Growth Mechanism of Monodisperse Tellurium Nanorods by a Surfactant-Assisted Method

• DOI: 10.1021/la035160d
• Publication Date: 2003-12-30T05:57:20Z
• Authors: Zhaoping Liu; Zhaokang Hu; Jianbo Liang; Shu Li; You Yang; Sheng Peng; Yitai Qian
• Keywords: Nanorod; Tellurium; Dispersity

This article describes a surfactant-assisted approach to the size-controlled synthesis of uniform nanorods trigonal tellurium (t-Te). These were grown from colloidal dispersion amorphous Te (a-Te) and t-Te nanoparticles at room temperature, which was first formed through reduction (NH4)2TeS4 by Na2SO3 in aqueous solution 80 °C. Nuclei process had strong tendency grow along [001] direction due inherently anisotropic structure t-Te. The formation could be ascribed confined growth surfactant adsorbing on surfaces growing particles. By employing various surfactants system, with well-controlled diameters lengths reproducibly produced this method. Both decreased increase alkyl length polarity surfactants. also obtained mixed surfactants, where different used selectively control rates crystal planes. We observed that as-synthesized size self-assembled into large-area smecticlike arrays.