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Issue 12, 2003
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Shape-controlled synthesis and growth mechanism of one-dimensional nanostructures of trigonal tellurium

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Abstract

Single crystalline one-dimensional (1D) nanostructures of trigonal tellurium (t-Te) with well-controlled shapes and sizes were synthesized by the hydrothermal reduction of Na2TeO3 in a mixed solution of ethanol and water at 100 °C. The formation of various 1D nanostructures of t-Te was mainly determined by properly controlling the nucleation and growth rate of t-Te in different reaction media. In acidic solution (1 M of HCl), the reaction gave nanowires with diameters of ∼30–100 nm, while in alkaline solution (1 M of NaOH), it yielded tubular crystals with diameters of ∼1–2 μm. The diameters of tubular crystals could also be controlled by adjusting the NaOH concentration. When polymer surfactant poly(vinyl pyrrolidone) (PVP) was presented in the alkaline solution, the reaction would produce uniform nanowires with diameters of ∼25 nm. Based on the TEM and SEM studies, the formation mechanisms for these 1D nanostructures were rationally interpreted. The crystallinity of the nanowires and the tubular crystals were determined by HRTEM, ED, and XRD.

Graphical abstract: Shape-controlled synthesis and growth mechanism of one-dimensional nanostructures of trigonal tellurium

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Publication details

The article was received on 13 Jun 2003, accepted on 19 Aug 2003 and first published on 24 Sep 2003


Article type: Paper
DOI: 10.1039/B306782C
Citation: New J. Chem., 2003,27, 1748-1752
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    Shape-controlled synthesis and growth mechanism of one-dimensional nanostructures of trigonal tellurium

    Z. Liu, S. Li, Y. Yang, Z. Hu, S. Peng, J. Liang and Y. Qian, New J. Chem., 2003, 27, 1748
    DOI: 10.1039/B306782C

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