Abstract
Single-crystal Bi 2Te 3–Te nanocomposites with heterostructure were synthesized using a two-step solvothermal process in the presence of ethylenediaminetetraacetic acid disodium salt. The first step is the formation of the Te nanorods and the second step is to grow the Bi 2Te 3 sheets off the Te rods surface to form the Bi 2Te 3–Te nanocomposites. The products were characterized by X-ray diffraction, scanning electron microscopy and transmission electron microscopy. We demonstrate a method of an epitaxial growth of Bi 2Te 3 nanosheets perpendicular to the axis of the central Te rod and a formation process of Bi 2Te 3–Te nanocomposites is also proposed.
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