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Method for packaging and modifying surface of substance

A material and encapsulation technology, applied in chemical instruments and methods, treatment of dyed organic silicon compounds, dyed low-molecular organic compounds, etc., can solve the problems of being suitable for one kind or a limited number of kinds, and achieve low price and good operation process Simple, wide-ranging effects

Inactive Publication Date: 2012-12-19
张家港楚人新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem with this type of scheme is that it can only be adapted to the preparation of one or a limited number of substances. If other substances are used instead, the reaction conditions will need to be changed a lot.

Method used

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  • Method for packaging and modifying surface of substance
  • Method for packaging and modifying surface of substance
  • Method for packaging and modifying surface of substance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Mix 200mL ethanol, 10mL water and 5mL ammonia water, then add 0.08g TiO 2 , and carry out magnetic stirring or ultrasonication for 48h, then add a certain amount of 1mL TEOS (mass fraction is 10%), continue magnetic stirring or ultrasonication for 1h, after the reaction is completed, the resulting product is filtered, centrifuged, washed, and vacuum-dried. Finally got TiO 2 SiO 2Core-shell structural material. The product was characterized as TiO by XRD 2 , also appears amorphous SiO 2 peaks, such as Figure 1a Shown; The product is characterized by TEM, indicating that it is a material with a core-shell structure, such as Figure 1b Shown; After infrared testing, the product contains a strong Si-O-Si bond, such as Figure 1c shown.

Embodiment 2

[0054] Mix 10mL ethanol, 185mL water and 5mL ammonia water, then add 0.16g Fe 2 o 3 , and perform magnetic stirring or ultrasonication for 1min, then add 0.5mL TMOS, continue magnetic stirring or ultrasonication for 48h, and after the reaction is completed, filter, centrifuge, wash, and vacuum-dry the obtained product to obtain Fe 2 o 3 SiO 2 Core-shell structural material. The product is tested by infrared, and the product contains a strong Si-O-Si bond, such as Figure 2a Shown; Characterized by TEM, indicating that it is a material with a core-shell structure, such as Figure 2b shown.

Embodiment 3

[0056] Mix 200mL isopropanol, 10mL water and 0.8mL concentrated ammonia water, then add 2.83g V 3 o 7 ·H 2 O, and carry out magnetic stirring or ultrasonication for 2h, then add 10mL TEOS, continue magnetic stirring or ultrasonication for 8h, after the reaction is completed, the resulting product is filtered, centrifuged, washed, and vacuum-dried to obtain V 3 o 7 ·H 2 OSoO 2 Core-shell structural material. The product is tested by infrared, and the product contains a strong Si-O-Si bond, such as Figure 3a Shown; Characterized by TEM, indicating that it is a material with a core-shell structure, such as Figure 3b shown.

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Abstract

The invention discloses a method for packaging and modifying the surface of a substance. As one aspect of the method, the method comprises the following steps of: enabling the concentration of ammonia to be at 0.15-10wt% by dispersing different substances into different solvents and adding water and ammonia water, adding alkoxy silane under the operation such as stirring, ultrasound and the like, reacting under a set temperature, separating, washing and drying a product obtained by the reaction, so that the product of which the surface is packaged with SiO2, the silane-modified product or the SiO2-pakaged product or the modified product can be finally obtained. According to the method, the surfaces of various different substances can be packaged with SiO2, and the surfaces of the substances can be modified, so that the thickness of a SiO2-packaged or silane-modified layer can be freely adjusted by controlling the kind and the quantity of the added alkoxy silane. The raw materials are low in cost and easy to obtain, the method provided by the invention is simple in technology, low in cost, easy to control, stable in product quality and good in technical repeatability, and the application range of the raw materials can be greatly enlarged. More importantly, the invention provided by the invention is universal.

Description

technical field [0001] The invention relates to a method for modifying a substance, in particular to a method for coating or modifying the surface of a substance with silicon dioxide or silane in high-concentration ammonia water, and belongs to the technical field of inorganic functional materials. Background technique [0002] In the past few decades, materials science has continuously developed towards the direction of interdisciplinary fields. People's research is no longer limited to traditional compounds, but has turned to the hybridization of organic, inorganic, polymer and biological materials. Among many hybrid materials, core-shell materials have special optical, electrical, magnetic, thermal and chemical properties due to their differences in composition, size and structural arrangement, and have attracted the attention of scientists in recent years. [0003] Composite low-dimensional nanomaterials with a core-shell structure are enriched with different components ...

Claims

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Application Information

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IPC IPC(8): C09C3/06C09C3/08C09C3/12C09C1/36C09C1/24C09C1/00C09C1/44C09C1/62C09C1/34
Inventor 黄驰张依福刘兴海易生平
Owner 张家港楚人新材料科技有限公司