Cost-effective chemical solution synthesis of bismuth telluride nanostructure for thermoelectric applications
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Date
2018
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Abstract
In this work, the bismuth telluride (Bi2Te3) nanostructure for thermoelectric applications was successfully synthesised by a new cost-effective chemical solution process. Firstly, the metal solutions of bismuth (III) nitrate pentahydrate and tellurium dioxide were mixed together at room temperature with adjusting the hydrodynamic atmosphere and introduced the sodium hydroxide. After that, different characterisation parameters, such as X-ray diffraction, atomic force microscopy (AFM), scanning electron microscopy (SEM), energy dispersive X-ray, and transverse electron microscopy (TEM) were obtained. Then, the average crystalline size of the Bi2Te3 nanostructure was found 23 nm. According to these obtained results, the materials consist of every specimen in nano range dimension in AFM studies. The elemental of Bi and Te were arranged with their quite stoichiometric atomic ratio observed by SEM. Ultimately, the TEM micrographs showed that the powders exhibited an aggregate phenomenon, and the primary crystalline size was about low dimension. © 2018 Institution of Engineering and Technology. All rights reserved.
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Atomic force microscopy , Chemicals , Cost effectiveness , Crystalline materials , Nanostructures , Scanning electron microscopy , Sodium hydroxide , Tellurium compounds , Transmission electron microscopy , bismuth derivative , bismuth telluride nanostructure , nanomaterial , unclassified drug , Average crystalline size , Bismuth nitrate pentahydrate , Bismuth telluride , Chemical solutions , Electron microscopies (TEM) , Energy dispersive x-ray , Tellurium dioxide , Thermoelectric application , Article , atomic force microscopy , chemical reaction , cost effectiveness analysis , electron microscopy , hydrodynamics , scanning electron microscopy , synthesis , ultraviolet radiation , X ray diffraction , Bismuth compounds