Synthesis Of Bismuth Telluride Nanostructures By refluxing Method

Srashti Gupta1*, S. Neeleshwar1*, Vinod Kumar1, Y.Y. Chen2

1University School of Basic and Applied Sciences, GGS Indraprastha University, Dwarka, Delhi 110075, India

2Institute of Physics, Academia Sinica, ROC, Taiwan

Adv. Mater. Lett., 2012, 3 (1), pp 50-54

DOI: 10.5185/amlett.2011.7285

Publication Date (Web): Apr 10, 2012

E-mail: srashti.3@gmail.com, sneeleshwar@gmail.com

Abstract


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.

Keywords

Thermoelectric materials, bismuth telluride,nano tube,nano particle,refluxing method

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