Synthesis of bismuth telluride nanostructures by refluxing method
نویسندگان
چکیده
Bismuth telluride (Bi2Te3) nano particles were prepared by refluxing method in different conditions such as varying concentration of KOH and reaction timings. X-ray diffraction (XRD) and transmission electron microscopy (TEM) measurements have been performed for structural and phase formation studies. The nanoparticles are showing the same structure of bulk except broadening of peak confirmed by XRD. The reaction time and KOH concentration are the key parameters to control the morphology and size of the particles. As the concentration of KOH increases, the particle size decreases from 23 to 15 nm and with increasing reaction time, nanorod like structures (~100 nm length and ~ 20 nm diameter) are formed. Copyright © 2011 VBRI press.
منابع مشابه
Template Synthesis of Bismuth Telluride Nanowires
We report the fabrication of thermoelectric bismuth teUuride nanowires using the template synthesis method. A simple electrodeposition procedure was used to produce the nanowires within the pores of an alumina filtration membrane. The resulting bismuth telluride/alumina composite membranes constitute an array of thermoelectric nanowires surrounded by a thermally and electrically insulating matr...
متن کاملSynthesis and thermoelectric properties of compositional-modulated lead telluride-bismuth telluride nanowire heterostructures.
We demonstrate the rational solution-phase synthesis of compositional modulated telluride nanowire heterostructures containing lead telluride (PbTe) and bismuth telluride (Bi2Te3). By tuning the ratio between PbTe and Bi2Te3 through adjusting the amount of critical reactants and precursors during the synthesis, the influence of composition on the thermoelectric properties of the nanowire hetero...
متن کاملSynthesis and Thermoelectric Properties of Bi2Se3 Nanostructures
Bismuth selenide (Bi2Se3) nanostructures were synthesized via solvothermal method. The crystallinity of the as-synthesized sample has been analyzed by X-ray diffraction, which shows the formation of rhombohedral Bi2Se3. Electron microscopy examination indicates that the Bi2Se3 nanoparticles have hexagonal flake-like shape. The effect of the synthesis temperature on the morphology of the Bi2Se3 ...
متن کاملHydrothermal Synthesis of Bi2S3 Nanostructures and ABS-Based Polymeric Nanocomposite
Bismuth sulfide nano-rods and nano-flowers were synthesized via a hydrothermal reaction at a relatively low temperature. Thioglycolic acid is used as sulfur source and capping agent simultaneously. Bi2S3 nanostructures were then added to acrylonitrile-butadiene-styrene (ABS) copolymer. The thermal stability behavior of ABS filled with bismuth sulfide nano-rods were investigated by thermogravime...
متن کاملCyclic-voltammetry study of bismuth telluride electrodeposition in polycarbonate etched ion-track membranes
Bismuth telluride compounds are well-known to be among the most efficient thermoelectric materials at room temperature. Currently, some efforts are made to synthesize nanowires, since theoretical predictions have shown that their transport properties can be favourably modified compared with bulk materials. The feasibility of the electrochemical synthesis of bismuth telluride nanowires in porous...
متن کامل