Macro preparation method for superfine tellurium nanowires

Abstract

The invention provides a macro preparation method for superfine tellurium nanowires, which comprises the following steps that sodium telluride reacts with a reducer by the action of a polyvinylpyrrolidone pH modifier to obtain a reaction mixture, the reaction mixture is rapidly cooled by cold water to obtain tellurium nanowire mother liquid, and a solvent is added to the tellurium nanowire mother liquid for extraction to obtain the tellurium nanowires. According to the macro preparation method, as the obtained reaction mixture is rapidly cooled by the cold water to prepare the tellurium nanowires, the quality of the tellurium nanowires is more uniform, and the diameters of the tellurium nanowires are smaller. Further, as preparation conditions are optimized, the preparation method facilitates synthesis in large quantity, and is easy to promote and apply.

Description

technical field [0001] The invention relates to the technical field of preparation of nanometer materials, in particular to a method for mass preparation of ultrafine tellurium nanowires. Background technique [0002] In recent years, one-dimensional nanomaterials such as nanowires, nanofibers, nanorods, nanobelts, etc., have been widely used in nanoelectronic devices due to their unique electrical, optical, magnetic and other physical and chemical properties. , nanolasers, nanochemical and biological sensors, nanoprobes, nanocomposites, etc. [0003] At present, the synthesis methods of one-dimensional nanomaterials mainly include vapor phase growth synthesis method, gas-liquid-solid method (VLS method), Solution-Liquid-Solid methods (SLS method), solvation thermal synthesis (solvothermal Methods), Solution-Phase Methods Based on Capping Reagents, anisotropic crystal growth method, template method, etc. Among them, telluride has a series of special properties, and there a...

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Problems solved by technology

[0004] The prior art discloses a lot of synthesis of nanomaterials using the template method, such as the American Chemical Society Nano (AcsNano, 2010 No. 4, page 2307) reported that silver telluride nanowires were used as templates to successfully synthesize telluride Cadmium, lead telluride, silver telluride and platinum telluride nanowires; German "Advanced Functional Materials" (Adv. Synthesized bismuth telluride-tellurium one-dimensional heterogeneous nanostructure; Zhu Junjie et al. invented a simple and fast method to prepare tellurium nanowires with smooth surface (CN1301346C); MC, Kum et al. Cadmium telluride nanowire arrays (Kum M.C., Yoo Y.B2008, 19, 325711), and the tellurium nanowires synthesized by these methods are thicker and uneven in diameter, which is not conducive to subsequent use; in addition, the tellurium nanowires synthesized by the above methods The production line is low. To obtain a large amount of products, repeated experiments are required, and it is difficult to guarantee the quality and uniformity of the products.

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