Single-wall carbon nanohorn-hollow nanogold compound and method for preparing single-wall carbon nanohorn-hollow nanogold compound

Abstract

The invention discloses a method for preparing a single-wall carbon nanohorn-hollow nanogold compound. The method for preparing the single-wall carbon nanohorn-hollow nanogold compound comprises the steps that single-wall carbon nanohorn powder, water and PDDA are mixed, the single-wall carbon nanohorn powder is made to be dissolved completely through ultrasonic waves, and then a single-wall carbon nanohorn solution is obtained; CoCl2, PVP K30 and water are mixed, the CoCl2 and the PVP K30 are made to be dissolved completely through stirring, a CoCl2 solution is obtained, deoxidization is conducted by introducing nitrogen into the solution, an NaBH4 solution is added dropwise under the stirring condition, CoCl2 reduction is conducted, and then a cobalt solution is obtained; the single-wall carbon nanohorn solution is added to the cobalt solution, an HAuCl4 solution is added after the single-wall carbon nanohorn solution and the cobalt solution are evenly mixed, sediment is collected in a centrifugal mode, washing is conducted, re-suspension is conducted with water, and thus the single-wall carbon nanohorn-hollow nanogold compound is obtained. According to the method for preparing the single-wall carbon nanohorn-hollow nanogold compound, in-situ synthesis of the single-wall carbon nanohorn-hollow nanogold compound is achieved according to a one-step method, the process is simple, the time is short, the yield is high, stripping between components is avoided effectively, and the prepared compound is high in stability, resistant to shock and high in shear resistance, has more binding sites, and is larger in specific surface area and higher in physical adsorption capacity and chemical adsorption capacity.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and relates to a nanocomposite and a preparation method thereof. Background technique [0002] Nanomaterials refer to materials whose structural unit size is between 1-100nm, and have the reputation of "the most promising material in the 21st century". Since the size of nanomaterials is close to the wavelength of light and the coherence length of electrons, and it has surface and interface effects, quantum size effects, small size effects and macroscopic quantum tunneling effects, it is widely used in thermal, mechanical, magnetic, electrical, chemical and optical fields. , superconductivity and catalysis have shown unique properties and have broad application prospects. [0003] As one of the important nanomaterials, carbon nanomaterials have been a research hotspot in this field in recent years, mainly including carbon nanotubes, carbon nanofibers, carbon nanospheres and graphene. Resea...

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Problems solved by technology

Due to the electrostatic adsorption between the components in this method, the combination is not strong enough, and the components are easily peeled off from the composite, which affects the yield and application range of the nanocomposite.

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