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Method for ordered arrangement of nano particles on solid base surface

A nanoparticle and substrate surface technology, applied in the nano field, can solve the problems of difficult large-scale film formation and application, difficult adjustment of particle size in thin films, large raw material consumption, etc., to achieve convenient adjustment of particle size and thickness. Promote and apply, transfer the effect of high efficiency

Inactive Publication Date: 2003-06-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of method consumes a lot of raw materials, the size of the particles in the prepared film is not easy to adjust, the operation is more complicated, and it is not easy to form a large-scale film and apply it.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1 Arrangement of iron-platinum nano-alloy particle film

[0016] After step a of the present invention, the concentration of 4 nanometer iron-platinum alloy particles is 2.5 mg / ml, and the total concentration of organic molecules is 2 × 10 -4 Spread 450 μl of hexane solution of M on the water surface. After equilibrating for 30 minutes, press the film to a constant pressure of 20mN / m. After equilibrating for 30 minutes, transfer the film to a glass slide by vertical pulling method, and keep the film pulling speed at 2mm. / min, wash and dry. Multilayer films with controllable thickness can be obtained by repeating the pulling process. The obtained film is heated to 600° C. and annealed for 10 minutes under the protection of nitrogen to obtain a monolayer film of iron-platinum nano-alloy particles arranged in a square order.

Embodiment 2

[0017] Embodiment 2 Arrangement of iron nanoparticle film

[0018] The concentration of iron nanoparticles containing 10 nm was 8 mg / ml, and the concentration of organic molecules was 1 × 10 -4 350 μl of chloroform solution of M was spread on the water surface, and after 30 minutes of equilibration, the film was pressed to a constant pressure of 28mN / m. min, wash and dry. Multilayer films with controllable thickness can be obtained by repeating the pulling process. The obtained film was heated to 500° C. and annealed for 20 minutes under the protection of nitrogen to obtain a monolayer film of iron nanoparticles arranged in a hexagonal order.

Embodiment 3

[0019] Embodiment 3 Arrangement of titanium oxide nanoparticle film

[0020] The concentration of 30 nm titanium oxide nanoparticles was 5 mg / ml, and the concentration of organic molecules was 4 × 10 -4 400 μl of toluene solution of M was spread on the water surface, and after 30 minutes of equilibration, the film was pressed to a constant pressure of 15 mN / m. After 60 minutes of equilibration, the film was transferred to a glass slide by vertical pulling method, and the film pulling speed was maintained at 5 mm / m. min, wash and dry. Multilayer films with controllable thickness can be obtained by repeating the pulling process. The obtained thin film is subjected to high-energy light irradiation for 5 minutes, and a single-layer and multi-layer ordered thin film of titanium oxide nanoparticles can be obtained.

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Abstract

The present invention relates to nano technology field. The process of arranging nano particles on the surface of solid base includes the specific steps of: dissolving chain organics molecule with hydrophilic or hydrophobic group into non-aqueous volatile solvent; dispersing nano particles in the said solution; spreading the non-aqueous solution on water as base liquid inside Langmuir tank and controlling the film pressure on the single-molecule film of the nano particles on the surface of water; transferring the film via vertical pulling process to treated surface of solid base to form Y-type LB film; and high temperature annealing or high-energy light beam irradiating the nano particle film to dissociate and evaporate organics molecule while leaving the nano particles on the base. The said process is simple, practical and effective and may be used widely.

Description

technical field [0001] The invention relates to a method for arranging nanoparticles, in particular to a method for orderly arranging nanoparticles on the surface of a solid substrate, belonging to the field of nanotechnology. Background technique [0002] Nanomaterials have become a current research hotspot due to their special properties and promising application prospects in electronics, magnetism, optics and catalysis. At present, nanoparticle materials can be prepared with high quality by a variety of methods, such as sol-gel method, photo-radiation redox method, electrochemical redox method, and sputtering method. However, with the development of nanoelectronic devices, it is increasingly required to quantitatively and orderly arrange nanoparticles on the surface of different solid substrates. LB technology has shown obvious advantages in this field due to its characteristics of quantitatively controllable film deposition thickness, no defects, and simple operation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/00C08J7/04C08J7/06
Inventor 张亚非王英徐东张效岩赵猛
Owner SHANGHAI JIAO TONG UNIV
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