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A simple hydrothermal method for the growth of Bi_2Se_3 nanorods

机译:一种简单的水热法生长Bi_2Se_3纳米棒

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Bi_2Se_3 nanorods have been synthesized through a simple hydrothermal reduction approach. The nanorods formed were approx = 10 nm in diameter and 100-200 nm in length. XRD characterization suggested that the product consisted of the hexagonal phase of pure Bi_2Se_3. EDX and XPS studies further confirmed the composition and purity of the product. A possible mechanism for the reaction is proposed, where Bi_2Se_3 microsheets are presumed to be the intermediate for the formation of the nanorods. The effect of solvent on the morphology of the final product is discussed, where, in the presence of aprotic solvent DMF, nanoparticle formation is observed. A bandgap of 2.25 eV is observed from the UV-visible absorption spectra.
机译:Bi_2Se_3纳米棒已通过简单的水热还原方法合成。形成的纳米棒的直径约为= 10nm,长度约为100-200nm。 XRD表征表明产物由纯Bi_2Se_3的六方相组成。 EDX和XPS研究进一步证实了产品的成分和纯度。提出了一种可能的反应机理,其中Bi_2Se_3微片被认为是纳米棒形成的中间产物。讨论了溶剂对最终产品形态的影响,其中在非质子溶剂DMF的存在下,观察到纳米颗粒的形成。从UV-可见吸收光谱观察到2.25eV的带隙。

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