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A 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, low output, high catalyst cost, etc., achieve the effect of small solvent flow resistance, strong platform applicability, and solve blockage

Active Publication Date: 2022-06-21
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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  • A device and method for large-scale continuous preparation of metal nanoparticles
  • A device and method for large-scale continuous preparation of metal nanoparticles
  • A 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: set the metal salt solution (iron nitrate, silver nitrate) to be 3mmol / 50mL, the reducing agent solution (sodium borohydride) to be 12mmol / 50mL, the solvent to be dimethylpyrrolidone, and the surfactant to be polyethylene Pyrrolidone; temperature of programmed temperature-controlled double-layer graphite plate 1 is 100℃, temperature of programmed temperature-controlled double-layer graphite plate 2 is 100℃, temperature of programmed temperature-controlled double-layer graphite plate 3 is 100℃; temperature of collected product is 0℃; syringe pump The flow rate was 1 mL / min.

Embodiment 2

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

Embodiment 3

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

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Abstract

The invention relates to a large-scale continuous preparation device and method of metal nanoparticles, belonging to the technical field of metal nanoparticle preparation. The equipment includes a microfluidic injection pump, a microfluidic channel, a Y-shaped tee pipe, a heating plate system for temperature control of the reaction, and a temperature-controlled product collection pool; the channels of the present invention are parallel and straight, the structure is straight, and the solvent flow resistance is small. Solve the shortcomings of traditional micro-channel blockage; the platform has strong applicability, and can react with various solvents and metals; the reaction conditions are unified; segmental heating, multi-point precise control, and the ability of large-scale production.

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 national defense, electronics, chemical industry, metallurgy, light industry, aviation, ceramics, nuclear technology, catalysts, medicine and other fields. 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 complicated process flow can easily lead to unstable produc...

Claims

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Application Information

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Patent Type & Authority Patents(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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