Device and method for large-scale continuous preparation of metal nanoparticles

A technology of metal nanoparticles and micro-channels, applied in the direction of nanotechnology, can solve the problems of unstable product quality, high catalyst cost, low output, etc., and achieve low solvent flow resistance, strong platform applicability, and straight structure Effect

Active Publication Date: 2021-06-18
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the simple and efficient large-scale preparation of metal nanoparticles is still an important challenge for large-scale preparation and industrial production.
Fine chemical raw materials and complex process flow easily lead to unstable product quality and low output, which eventually lead to high cost of catalyst

Method used

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  • Device and method for large-scale continuous preparation of metal nanoparticles
  • Device and method for large-scale continuous preparation of metal nanoparticles
  • Device and method for large-scale continuous preparation of metal nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of FeAg nanoparticles: metal salt solution (iron nitrate, silver nitrate) is set to be 3mmol / 50mL, reducing agent solution (sodium borohydride) is 12mmol / 50mL, solvent is dimethylpyrrolidone, and surfactant is polyethylene Pyrrolidone; the temperature of program temperature-controlled double-layer graphite plate 1 is 100°C, the temperature of program temperature-controlled double-layer graphite plate 2 is 100°C, and the temperature of program temperature-controlled double-layer graphite plate 3 is 100°C; the temperature of collected products is 0°C; injection pump The flow rate was 1 mL / min.

Embodiment 2

[0028] Preparation of FeAg nanoparticles: metal salt solution (iron nitrate, silver nitrate) is set to be 3mmol / 50mL, reducing agent solution (sodium borohydride) is 12mmol / 50mL, solvent is dimethylpyrrolidone, and surfactant is polyethylene Pyrrolidone; the temperature of program temperature-controlled double-layer graphite plate 1 is 120°C, the temperature of program temperature-controlled double-layer graphite plate 2 is 120°C, and the temperature of program temperature-controlled double-layer graphite plate 3 is 120°C; the temperature of collected products is 0°C; injection pump The flow rate was 1 mL / min.

Embodiment 3

[0030] Preparation of FeAg nanoparticles: metal salt solution (iron nitrate, silver nitrate) is set to be 3mmol / 50mL, reducing agent solution (sodium borohydride) is 12mmol / 50mL, solvent is dimethylpyrrolidone, and surfactant is polyethylene Pyrrolidone; the temperature of program temperature-controlled double-layer graphite plate 1 is 140°C, the temperature of program temperature-controlled double-layer graphite plate 2 is 140°C, and the temperature of program temperature-controlled double-layer graphite plate 3 is 140°C; the temperature of collected products is 0°C; injection pump The flow rate was 1 mL / min.

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Abstract

The invention discloses a device and method for large-scale continuous preparation of metal nanoparticles, and belongs to the technical field of preparation of metal nanoparticles. The device comprises a micro-flow injection pump, micro-flow channels, a Y-shaped three-way pipe, a heating plate system for reaction temperature control and a temperature control product collection pool. The channels are parallel and straight, the structure is flat and straight, the solvent circulation resistance is small, and the defect that traditional micro-flow channels are blocked is overcome; the applicability to a platform is strong, and various solvents and various metals can react; the reaction conditions are uniform; and segmented heating is achieved, multi-point accurate regulation and control are achieved, and the large-scale production capacity is achieved.

Description

technical field [0001] The invention relates to a device and method for large-scale preparation of metal nanoparticles, and belongs to the technical field of preparation of metal nanoparticles. Background technique [0002] Due to the small size effect, quantum effect, surface effect and interface effect, metal nanoparticles have physical and chemical properties that traditional materials do not have, and exhibit unique optical, electrical, magnetic, catalytic, chemical properties and superconducting properties. Make nanomaterials have important application value in the fields of national defense, electronics, chemical industry, metallurgy, light industry, aviation, ceramics, nuclear technology, catalyst, medicine and so on. However, the simple and efficient large-scale preparation of metal nanoparticles is still an important challenge for large-scale preparation and industrial production. Fine chemical raw materials and complex process flow easily lead to unstable product ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 宋玉军马炬刚
Owner UNIV OF SCI & TECH BEIJING
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