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Method for preparation of organic-inorganic hybrid hollow nanosphere by ultrasound

A nanosphere and inorganic technology, which is applied in the field of preparation of organic-inorganic hybrid hollow nanospheres, can solve the problems of prolonged preparation time, inability to meet the requirements, and achieve the effects of simple system, short time consumption and large output.

Active Publication Date: 2017-01-11
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method avoids the introduction of a large amount of emulsifiers and co-emulsifiers, but requires a pre-hydrolysis process, which prolongs the preparation time, and the prepared hybrid hollow microspheres have a particle size of submicron (300-400 nanometers), which cannot meet certain requirements. Field demand for hybrid hollow nanospheres (less than 100 nm)

Method used

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  • Method for preparation of organic-inorganic hybrid hollow nanosphere by ultrasound

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Embodiment 1

[0051] The raw materials are 3-methacryloyloxypropyltrimethoxysilane (TPM), isoamyl acetate, ammonia water and water, and the initiator is potassium persulfate. At room temperature, take 40 mL of pure water and adjust its pH value to 10 with ammonia water. Subsequently, 0.2 mL of TPM and 0.6 mL of isoamyl acetate were added to the above system, and ultrasonic (100 MHz) was performed for 15 min at room temperature. Afterwards, nitrogen was passed to exhaust oxygen for 30 minutes, and the temperature was raised to 70° C., and 10 mg of potassium persulfate was added to initiate polymerization, and the polymerization reaction continued for 12 hours. The obtained emulsion is centrifuged and washed three times with ethanol to obtain organic-inorganic hybrid hollow nanospheres.

[0052] The above-mentioned organic-inorganic hybrid hollow nanospheres were dispersed in ethanol to make a transmission electron microscope sample, and the morphology of the particles was observed. Such as...

Embodiment 2

[0055] The raw materials are 3-methacryloyloxypropyltrimethoxysilane (TPM), isoamyl acetate, ammonia water and water, and the initiator is potassium persulfate. At room temperature, take 60 mL of pure water and adjust its pH value to 9.4 with ammonia water. Subsequently, 0.2 mL of TPM and 0.6 mL of isoamyl acetate were added to the above system, and ultrasonic (100 MHz) was performed for 15 min at room temperature. Afterwards, nitrogen was passed to exhaust oxygen for 30 minutes, and the temperature was raised to 70° C., and 10 mg of potassium persulfate was added to initiate polymerization, and the polymerization reaction continued for 10 hours. The obtained emulsion is centrifuged and washed three times with ethanol to obtain organic-inorganic hybrid hollow nanospheres.

[0056] The above-mentioned organic-inorganic hybrid hollow nanospheres were dispersed in ethanol to make a transmission electron microscope sample, and the morphology of the particles was observed. and f...

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Abstract

The invention discloses a method for preparation of an organic-inorganic hybrid hollow nanosphere by ultrasound, the obtained nanosphere and use thereof. The method has the advantages of simple system, simple operation, good repeatability, short time and large output. The organic-inorganic hollow nanosphere prepared by the method provided by the invention has uniform particle size distribution, the size is less than 100nm, the surface is smooth, the inside is hollow, and the shell is composed of a silicon-containing polymer. The nanosphere is an organic-inorganic hybrid structure, has hydrophilic and lipophilic characteristics, and is especially suitable for the field in which the size of hollow spheres is strictly limited at nanoscale.

Description

technical field [0001] The invention relates to a method for preparing organic-inorganic hybrid hollow nanospheres, in particular to a method for preparing organic-inorganic hybrid hollow nanospheres through ultrasound. Background technique [0002] Hollow microspheres have low density, high specific surface area, and the cavity part can accommodate guest materials with different properties. They are widely used in the fields of catalysts, drug carriers, and thermal insulation materials. At present, the preparation methods of hollow microspheres can be roughly divided into two categories: the first type is to prepare microsphere templates first, then further prepare microspheres with core-shell structure, and finally remove the templates by certain methods to obtain hollow microspheres. Such methods mainly include osmotic swelling method, self-assembly method and template method. Through this method, hollow microspheres with controllable size and uniform particle size can o...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08F292/00C08F220/10
Inventor 邱东黄婷
Owner INST OF CHEM CHINESE ACAD OF SCI
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