Preparation method of nano copper composition protected by organic monomolecular layer

A monomolecular layer, nano-copper technology, applied in the treatment of dyed low molecular organic compounds, fibrous fillers, etc., can solve the problems of harsh conditions and low yield, and achieve low cost, high yield, and cheap and easy-to-obtain raw materials. Effect

Inactive Publication Date: 2006-05-03
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current preparation method of MPC is mainly carried out in the organic phase, the conditions are harsh and the yield is low

Method used

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  • Preparation method of nano copper composition protected by organic monomolecular layer
  • Preparation method of nano copper composition protected by organic monomolecular layer
  • Preparation method of nano copper composition protected by organic monomolecular layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take 0.6M Cu 2 SO 4 .5H 2 Add 0.05mol of dodecyltrimethylammonium bromide to 15ml of O solution, stir to make it dissolve, and set aside;

[0017] Take 0.3M benzene solution of dodecylmercaptan 50ml and add to the above solution, add 1M NaBH 4 60ml of the aqueous solution, reacted for 2 hours, separated the organic phase, distilled under reduced pressure, and dried under vacuum at 80°C.

[0018] figure 1 It is a transmission electron micrograph of the prepared organic monomolecular layer protected nano-copper complex, and it can be seen that the prepared nano-particles have a uniform particle size, no agglomeration, and a particle size of 2-4nm. Figure II is the electron diffraction pattern of the prepared nanoparticles, and it can be seen from the figure that the prepared organic monomolecular layer protective nanocomposite contains face-centered cubic copper.

Embodiment 2

[0020] Take 0.6M Cu 2 SO 4 .5H 2 Add 0.05 mol of cetyltrimethylammonium bromide to 15 ml of O solution, stir to dissolve it, and set aside;

[0021] Take 0.3M dihexadecyl dithiophosphoric acid benzene solution 50ml and add to the above solution, add 1M NaBH 4 60ml of the aqueous solution, reacted for 2 hours, separated the organic phase, distilled under reduced pressure, and dried under vacuum at 80°C.

[0022] image 3 It is a transmission electron micrograph of the prepared organic monomolecular layer protected nano-copper complex, and it can be seen that the prepared nanoparticles have a uniform particle size without agglomeration, and the particle size is 4-7nm.

Embodiment 3

[0024] Take 0.6M Cu 2 SO 4 .5H 2 Add 0.05 mol of cetyltrimethylammonium bromide to 15 ml of O solution, stir to dissolve it, and set aside;

[0025] Take 50ml of benzene solution of 0.3M didodecyl dithiophosphoric acid and add it to the above solution, add 1M NaBH 4 60ml of the aqueous solution, reacted for 2 hours, separated the organic phase, distilled under reduced pressure, and dried under vacuum at 80°C.

[0026] Figure 4 It is a transmission electron micrograph of the prepared organic monomolecular layer protected nano-copper complex, and it can be seen that the prepared nano-particles have a uniform particle size, no agglomeration, and a particle size of 7-10nm.

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Abstract

The invention discloses a preparation method for organic monomolecular layer to protect nano copper compound, which comprises: mixing water solution of surface activator of common nantokite and cationicy ammonium salt with sulfide-containing benzene liquid, reducing with NaBH4 solution to form by one step the object product with 2-10nm size and even distribution and well dispersibility in nonpolar solvent. This method is simple, and has high yield with high efficiency.

Description

technical field [0001] The invention relates to a preparation method of an organic monomolecular layer protecting nanometer copper compound. Background technique [0002] Due to the characteristics of small size, large specific surface area, quantum size effect and macroscopic quantum tunneling effect, copper nanoscale materials and their composites exhibit novel properties in light, electricity, magnetism and chemistry. The research on the preparation, performance and application of copper nanomaterials has been widely concerned at home and abroad. Among them, organic monolayer protected nanoparticles (MPC) are different from traditional colloids and nanoparticles prepared by other methods. It usually uses small organic molecules as ligands, and the condensed phase and small organic molecules pass covalent or non-covalent bonds. Assembled supramolecular systems in which the properties of the individual components remain largely unaffected. MPC can be repeatedly separated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C3/08C09C1/00
Inventor 陈建敏陈磊周惠娣万宏启贾均红
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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