Single-wall carbon nanohorn-hollow gold nanocomposite and preparation method thereof

A single-walled carbon nanohorn and hollow nanotechnology, which is applied in the field of nanomaterials, can solve the problems affecting the yield and application range of nanocomposites, and the combination is not stable enough to achieve strong physical and chemical adsorption capacity, good stability, and high yield high effect

Active Publication Date: 2015-09-02
THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Single-wall carbon nanohorn-hollow gold nanocomposite and preparation method thereof
  • Single-wall carbon nanohorn-hollow gold nanocomposite and preparation method thereof
  • Single-wall carbon nanohorn-hollow gold nanocomposite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0033] Experimental example 1. SEM characterization of single-walled carbon nanohorns-hollow gold nanocomposites synthesized by different methods

[0034] Take 3-5 μL each of the single-walled carbon nanohorn-hollow gold nanocomposites prepared in the synthesis examples and comparative synthesis examples, and use SEM to characterize them.

[0035] figure 1 It is the SEM image of the in situ synthesized single-wall carbon nanohorn-hollow gold nanocomposite. As can be seen from the figure, the surface of the compound synthesized in situ in the present invention has a large number of hollow gold nanoparticles with a hollow spherical structure, the diameter ranges from about 30nm to 200nm, and about 75% of the particles have a diameter of about 100nm; about 75%~ 95% of the particles have a weakened middle brightness and stronger surrounding brightness, showing a hollow spherical structure. On the other hand, the distribution of hollow gold nanoparticles on the single-walled carb...

experiment example 2

[0038] Experimental example 2. Cyclic voltammetry characterization of in situ synthesized single-walled carbon nanohorns-hollow gold nanocomposites

[0039] Take 10 μL of the single-walled carbon nanohorn-hollow gold nanocomposite synthesized in situ, drop it on a polished bare glassy carbon electrode, dry it at 37°C, put it in 1×PBS (pH7.4), and use cyclic voltammetry characterization. The result is as image 3 As shown, compared with the bare glassy carbon electrode, the electrode current value of the modified in situ synthesized single-walled carbon nanohorn-hollow nanogold composite increased significantly, from 2.167 μA to 5.277 μA, an increase of 2.435 times, indicating that the original The synthesized single-walled carbon nanohorn-hollow gold nanocomposites have excellent electrical conductivity.

experiment example 3

[0040] Experimental example 3. Ultraviolet spectral scanning analysis of in situ synthesized single-walled carbon nanohorns-hollow gold nanocomposites

[0041] Take 10 μL each of the single-walled carbon nanohorn solution, the hollow gold nanohorn solution, and the in-situ synthesized single-walled carbon nanohorn-hollow gold nanocomposite, dilute to 1 mL with deionized water, and perform ultraviolet spectral scanning analysis. The scanning range is 190nm~ 800nm. The result is as Figure 4 As shown, the maximum absorption peak of single-wall carbon nanohorn is located at 267nm, and the absorbance value is 0.401; the maximum absorption peak of hollow gold nanohorn is located at 201nm, and the absorbance value is 0.503; the single-wall carbon nanohorn-hollow gold nanocomposite synthesized in situ There are two maximum absorption peaks, one is located at 201nm, with an absorbance value of 0.465; the other is located near 235nm, with an absorbance value of 0.425; indicating that ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
lengthaaaaaaaaaa
adsorption capacityaaaaaaaaaa
Login to view more

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B82B1/00B82B3/00G01N21/33B82Y30/00B82Y40/00
Inventor 刘飞蒲晓允张立群蒋栋能项贵明罗富康刘畅刘琳琳李毅
Owner THE SECOND AFFILIATED HOSPITAL ARMY MEDICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap