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Facile solvothermal synthesis, growth mechanism and thermoelectric property of flower‐like Bi 2 Te 3
Author(s) -
Jin Rencheng,
Liu Junshen,
Li Guihua
Publication year - 2014
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201400012
Subject(s) - transmission electron microscopy , thermoelectric effect , materials science , high resolution transmission electron microscopy , solvothermal synthesis , diffraction , atmospheric temperature range , scanning electron microscope , nanoparticle , chemical engineering , nanotechnology , morphology (biology) , crystallography , analytical chemistry (journal) , chemistry , composite material , optics , organic chemistry , physics , genetics , engineering , biology , thermodynamics , meteorology
Hierarchical flower‐like Bi 2 Te 3 was synthesized through a facile solvothermal method. The crystal structure and morphology of the as‐prepared samples were characterized by X‐ray diffraction (XRD), filed emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and high resolution TEM. The reaction parameters such as reaction time, the amount of glucose, concentration of NaOH and the reaction temperature were systematically investigated. Based on the FESEM observations, a possible mechanism defined as a self‐assembly process accompanied by anisotropic growth mechanism was proposed. Moreover, the thermoelectric properties were measured at the temperature range of 300–600 K. The hierarchical flower‐like Bi 2 Te 3 presented good thermoelectrical properties. The maximum ZT value reached up to 0.6 at 600 K, which was higher than that of Bi 2 Te 3 nanoparticles.