Method for preparing highly mono-dispersed metal nanoparticles in porous material

A technology of metal nanoparticles and porous materials, applied in the field of nanomaterials and nanometers, can solve the problems of easy aggregation of nanometer metals, reduction of specific surface area, easy blockage of pores, etc., and achieve the effect of short synthesis cycle, high activity and improved stability
CN103639418AInactive Publication Date: 2014-03-19WUHAN UNIV OF TECH
5 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2014-03-19
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method for preparing highly mono-dispersed metal nanoparticles in a porous material. The method comprises the following steps of: 1) synthesizing the porous material with continuous and through three-dimension and a unified aperture; 2) dissolving a precursor of the metal nanoparticles and a reducing agent in a solvent to obtain a reaction solution for synthesizing the metal nanoparticles, mixing the porous material synthesized in the step 1) with the reaction solution for synthesizing the metal nanoparticles, and enabling the reaction solution of the metal nanoparticles to enter into holes of the porous material through capillary action; 3) using the porous material as a reactor for synthesizing the metal nanoparticles, and reducing the precursor of the metal nanoparticles to obtain the metal nanoparticles; 4) filtering, washing and drying the mixed solution obtained in the step 3) to obtain the final product. The method prepares the highly mono-dispersed metal nanoparticles, and is simple and convenient in process and short in synthesis period; the synthesized mono-dispersed metal nanoparticles show high activity when serving as a catalyst of a proton exchange membrane fuel cell.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of nanomaterials and nanotechnology, and in particular relates to a method for preparing highly monodisperse metal nanoparticles in porous materials. Background technique

[0002] Due to their unique thermal, electrical, magnetic and optical properties, metal nanoparticles have broad application prospects in energy, environmental protection, petrochemical, biomedicine and other fields. These properties of metal nanoparticles are based on their small size. However, such a metal nanoparticle system usually has a high specific surface energy, and it is easy to agglomerate, resulting in the loss of the unique properties of the metal nanoparticle system. Therefore, how to prevent its agglomeration is a hotspot in the research of metal nanoparticle systems.

[0003] It is an effective method to add stabilizers to generate electrostatic repulsion or steric repulsion between metal nanoparticles to stabilize metal nanopartic...

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