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A multifunctional hollow mesoporous sio 2 Preparation method of nanocomposite

A nanocomposite material and hollow mesopore technology, applied in the field of nanomaterials, can solve the problems of poor thermal stability and chemical stability, rapid decomposition, etc., and achieve the effects of easy production and promotion, good dispersion and uniform particle size

Active Publication Date: 2021-04-23
WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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Problems solved by technology

However, these carriers have various limitations, such as poor thermal and chemical stability and rapid breakdown in the immune system

Method used

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  • A multifunctional hollow mesoporous sio <sub>2</sub> Preparation method of nanocomposite
  • A multifunctional hollow mesoporous sio <sub>2</sub> Preparation method of nanocomposite
  • A multifunctional hollow mesoporous sio <sub>2</sub> Preparation method of nanocomposite

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Embodiment Construction

[0029] The technical solutions and effects of the present invention will be further described below in conjunction with the embodiments. However, the particular methodology, formulation and instructions employed are not limiting of the invention.

[0030]Implementation process:

[0031] (1) Co-precipitation method to synthesize Y(OH)CO 3 : Yb, Er.

[0032] Y with a molar ratio of 0.78:0.20:0.02 2 o 3 ,Yb 2 o 3 and Er 2 o 3 Soluble concentration is 2mol L -1 HNO 3 middle. The obtained Y(NO 3 ) 3 , Yb(NO 3 ) 3 and Er(NO 3 ) 3 The solution was added to 200 ml of distilled water. Then 12.1 g of urea were added and stirring was continued. After 2 h, the above mixture was transferred to a flask and reacted in a water bath at 90 °C for 3 h. Finally, the reacted solution was centrifuged at 4000 r / min, washed three times with water and ethanol, and dried in an oven at 60°C for 24 h to obtain Y(OH)CO 3 : Yb, Er.

[0033] (2) Using hydrothermal method in Y(OH)CO 3 :...

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Abstract

The invention discloses a multifunctional hollow mesoporous SiO 2 Preparation method of nanocomposite materials, with Y 2 o 3 , Yb 2 o 3 and Er 2 o 3 Synthesis of Y(OH)CO as raw material by co-precipitation method 3 :Yb,Er, then use hydrothermal method in Y(OH)CO 3 : Yb, Er core structure surface coated with carbon shell, and then using sol-gel method in Y(OH)CO 3 :Yb,Er@C surface covered with mesoporous m SiO 2 , and finally synthesized Y with hollow mesoporous structure 2 o 3 :Yb,Er@ m SiO 2 ; The method can be used to prepare hollow mesoporous structure photoluminescent nanocomposites with large aperture and specific surface area.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for preparing Y 2 o 3 :Yb,Er@ m SiO 2 Nanocomposite approach. Background technique [0002] Controlled drug release is one of the most important and attractive research fields, and the carrier is the most critical for controlling drug storage capacity and its release rate. In the last decade, this research has been greatly improved. In the sustained drug release system, a large number of organic systems have been studied as drug carriers, such as micelles, liposomes and polymers. However, these carriers have various limitations, such as poor thermal and chemical stability and rapid breakdown in the immune system. In contrast, mesoporous silica materials have good biocompatibility, stable selectivity and no toxicity. In addition, it can be degraded into Si(OH) in the body 4 , Si(OH) 4 Can be excreted through the kidneys, so this type of material can be widel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K9/51A61K47/04A61K47/02A61K49/00
CPCA61K9/5115A61K49/0019A61K49/0093
Inventor 李磊程臣周思思隋鑫周章华
Owner WUHAN MARINE ELECTRIC PROPULSION RES INST CHINA SHIPBUILDING IND CORP NO 712 INST
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