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Preparation of nanoparticles with controllable morphology based on the sandwich interface method and its preparation method

A nanoparticle and sandwich technology, which is applied in nanotechnology, chemical instruments and methods, metal processing equipment, etc., can solve the problem that the shape and size of nano-β-calcium silicate hollow spheres are difficult to control, and the diffusion of nanoparticles cannot be precisely controlled. It is not easy to solve the problems of industrialized production and achieve the effect of low equipment requirements, short production cycle and convenient operation

Active Publication Date: 2020-01-24
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shape and size of BaTiO3 nanoparticles and nano-β-calcium silicate hollow spheres prepared by the two oil-water interface methods are not easy to control, and the diffusion of nanoparticles in the liquid phase cannot be precisely controlled, and the preparation process is more complicated. , needs to be calcined, and it is not easy to realize industrial production

Method used

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  • Preparation of nanoparticles with controllable morphology based on the sandwich interface method and its preparation method
  • Preparation of nanoparticles with controllable morphology based on the sandwich interface method and its preparation method
  • Preparation of nanoparticles with controllable morphology based on the sandwich interface method and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of calcium nitrate upper layer inverse microemulsion

[0055] First, add 3mL of emulsifier TX-100 and 1.5mL of n-pentanol into 30mL of cyclohexane to obtain an upper layer mixed solution, and then weigh 0.1181g of calcium nitrate, the raw material used to prepare the upper layer of inverse microemulsion, and dissolve it into 1mL of an aqueous solution , and then use a micro-injector to add the aqueous solution dropwise to the upper mixed solution, and use a multi-head magnetic heating stirrer to fully disperse it at room temperature until a clear and transparent calcium nitrate upper layer inverse microemulsion phase is obtained;

[0056] (2) Preparation of lower layer aqueous solution liquid phase and intermediate transition layer liquid phase

[0057] Weigh 0.1140 g of the raw material trisodium phosphate used to prepare the lower aqueous solution liquid phase with a balance and dissolve it in 10 mL deionized water to obtain the lower layer aqueous sol...

Embodiment 2

[0063] (1) Preparation of calcium nitrate upper layer inverse microemulsion

[0064] First, add 3mL of emulsifier TX-100 and 1.5mL of n-pentanol to 30mL of cyclohexane to obtain an upper layer mixed solution, then weigh 0.5905g of calcium nitrate, the raw material used to prepare the upper layer of inverse microemulsion, and dissolve it into 1mL of an aqueous solution , and then use a micro-injector to add the aqueous solution dropwise to the upper mixed solution, and use a multi-head magnetic heating stirrer to fully disperse it at room temperature until a clear and transparent calcium nitrate upper layer inverse microemulsion phase is obtained;

[0065] (2) Preparation of lower aqueous solution liquid phase and intermediate transition layer

[0066] Weigh 0.5700g of the raw material trisodium phosphate used for preparing the lower aqueous solution liquid phase with a balance and dissolve it in 10mL deionized water to obtain the lower aqueous solution liquid phase; the interm...

Embodiment 3

[0072] (1) Preparation of calcium nitrate upper layer inverse microemulsion

[0073]First, add 3mL of emulsifier TX-100 and 1.5mL of n-pentanol into 30mL of cyclohexane to obtain an upper layer mixed solution, and then weigh 0.2362g of calcium nitrate, the raw material used to prepare the upper layer of inverse microemulsion, and dissolve it into 1mL of an aqueous solution , and then use a micro-injector to add the aqueous solution dropwise to the upper mixed solution, and use a multi-head magnetic heating stirrer to fully disperse it at room temperature until a clear and transparent calcium nitrate upper layer inverse microemulsion phase is obtained;

[0074] (2) Preparation of lower aqueous solution liquid phase and intermediate transition layer

[0075] The lower layer reactant trisodium phosphate used for preparing the lower layer aqueous solution liquid phase is weighed with a balance and dissolved in 10mL deionized water to obtain the lower layer aqueous solution liquid ...

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Abstract

The invention relates to a method for preparing nanoparticles with a controllable shape based on a sandwich interface method. The method designs immiscible three-phase mixtures, that is, three-layer liquid phases, referred to as sandwiches, including the upper reverse microemulsion phase, the middle transition layer liquid phase and the lower aqueous solution liquid phase; they are precipitated and reacted to obtain a controllable morphology Nanoparticles with different sizes and chemical properties; including noble metals, metal oxides, hydroxides, sulfides, metal organic framework materials and biomedical nanomaterials. The invention prepares novel nanoparticles with uniform particle size and special structure, such as shell structure, composite nanostructure and hollow structure. Moreover, the process is simple, the operation is convenient, and there is no need to adjust the pH; and the requirements for equipment are not high; at the same time, the product output can be increased by increasing the concentration of the initial reactant without affecting the product appearance, and it is easy to realize industrial production.

Description

technical field [0001] The invention relates to a nanomaterial preparation technology, in particular to a sandwich interface method for preparing nanoparticles with a controllable shape and size and a preparation method thereof, belonging to the field of nanomaterial engineering. Background technique [0002] The special properties of nanomaterials different from bulk materials due to the size effect have attracted extensive attention of researchers in many material application fields. The same nanomaterials can be endowed with different application fields through the adjustment of nanocrystal structure and morphology. Roughly speaking, the rational construction of nanocrystalline structural units mainly involves two processes: the first is to determine the possible chemical composition and its functional structure that can produce special properties, such as shell nanostructures and composite nanostructures; the second is to prepare methods through nanomaterials. , such as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/32C01F11/18C01G9/02C01G11/02C01G45/02C01G49/02B22F9/24B22F1/00C08G83/00B82Y40/00
CPCB82Y40/00C01B25/325C01F11/18C01G9/02C01G11/02C01G45/02C01G49/02C08G83/008B22F9/24C01P2004/62C01P2004/64C01P2004/04C01P2004/03C01P2004/10C01P2004/16C01P2004/34C01P2004/32B22F1/054
Inventor 范红松赵欢何云虎陈素萍
Owner SICHUAN UNIV
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