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Amphiphilic porous hollow carbon microsphere as well as preparation method and application thereof

A technology of carbon microspheres and amphiphilicity, which is applied in the field of amphiphilic porous hollow carbon microspheres and their preparation and application, which can solve the problems of increased cost and complicated preparation process, and achieve the effect of low cost

Active Publication Date: 2013-04-10
CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the preparation process of the entire carrier material too complicated and increases the cost of production.

Method used

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  • Amphiphilic porous hollow carbon microsphere as well as preparation method and application thereof
  • Amphiphilic porous hollow carbon microsphere as well as preparation method and application thereof
  • Amphiphilic porous hollow carbon microsphere as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1, the preparation of amphiphilic mesoporous hollow carbon microsphere a

[0032] Weigh 1 g of Saccharomyces cerevisiae (manufacturer is Angel Yeast Co., Ltd., trade name is high temperature resistant brewing high-activity dry yeast, catalog number 80000012), and disperse it in 100 ml of 0.1 mol / L butanediol aldehyde, and then transferred to the reaction kettle and placed in a thermostat for 14 hours at 180 ° C, the obtained precipitate was washed with deionized water, and dried at 20 ° C for 24 hours, after drying, the amphiphilic porous hollow carbon was obtained Microspheres.

[0033] Observation of amphiphilic porous hollow carbon microspheres by scanning electron microscope. The pore size distribution on the shell of amphiphilic porous hollow carbon microspheres was determined by nitrogen adsorption method. The infrared characterization of the surface functional groups of amphiphilic porous hollow carbon microspheres was carried out by Fourier transfor...

Embodiment 2

[0035] Example 2, Preparation of Amphiphilic Mesoporous Hollow Carbon Microspheres b

[0036] The preparation method is basically the same as in Example 1, except that the surface protection agent used is glutaraldehyde, the concentration is 0.05mol / L, the dosage of yeast is 5g, and the rest of the steps are the same as in Example 1.

[0037] The structure of the product under the scanning electron microscope is as follows figure 2 As shown, the prepared hollow carbon microspheres are spherical with a diameter of 2-4 microns. Its nitrogen adsorption-desorption isotherm and pore size distribution diagram are shown in Image 6 As shown, according to the nitrogen adsorption-desorption isotherm, the average pore diameter on the spherical shell is 43.5nm. Its infrared characterization result is similar to Example 1.

Embodiment 3

[0038] Example 3, Preparation of Amphiphilic Macroporous Hollow Carbon Microspheres

[0039]The preparation method is basically the same as in Example 1, except that the surface protection agent used is adipaldehyde, the concentration is 0.01mol / L, the dosage of yeast is 20g, and the rest of the steps are the same as in Example 1.

[0040] The structure of the product under the scanning electron microscope is as follows image 3 As shown, the prepared hollow carbon microspheres are also spherical with a diameter of 2-4 microns. Its nitrogen adsorption-desorption isotherm and pore size distribution diagram are shown in Figure 7 As shown, according to the nitrogen adsorption-desorption isotherm, the average pore diameter on the spherical shell is 50.2nm, and the infrared characterization result is similar to that of Example 1.

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Abstract

The invention discloses an amphiphilic porous hollow carbon microsphere, a preparation method thereof, applications of the amphiphilic porous hollow carbon microsphere as a carrier in enriching and loading of active molecules or a catalyst, and a method for separating and recovering the porous hollow carbon microsphere from a dispersion system by utilizing the amphipathy. The method comprises thefollowing steps of: dispersing microzyme in an aqueous solution of a cytoderm surface protectant; and then, carrying out carbonation treatment to obtain the amphiphilic porous hollow carbon microsphere. The prepared hollow carbon microsphere has a pore size capable of being controlled in the mesoporous and macroporous range as required, and can be suitable for the loading, the storage and the transmission of guest molecules in different sizes; by utilizing the characteristic of the amphiphilic porous hollow carbon microsphere capable of spontaneously transferring to a two-phase interface froma polar or non-polar dispersion system, the microsphere can be conveniently separated and recovered from a reaction mixing system. The easy and low-cost synthesis method and the special properties ofthe hollow carbon microsphere are favorable to the applications of the hollow carbon microsphere to the fields, such as energy storage, medicament transmission, artificial cells, catalytic carriers, and the like.

Description

technical field [0001] The invention relates to an amphiphilic porous hollow carbon microsphere and its preparation method and application. Background technique [0002] In recent years, due to their unique properties and great potential application value, hollow microspheres with well-ordered structure, especially hollow microspheres with porous spherical shells, have attracted extensive attention of many researchers. The porous spherical shell structure allows guest molecules such as dyes, drugs, phase-change materials, cells, and proteins to freely enter the inner cavity of the microspheres, thereby greatly improving the loading, storage, and transportation efficiency of these active molecules. Therefore, this porous and hollow structural feature will help the application of porous hollow microspheres in the fields of energy storage, drug delivery, artificial cells, and catalytic carriers. [0003] At present, the methods for preparing porous hollow microspheres are main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N11/14C01B31/02C07K17/14B01J32/00A61K47/04
Inventor 杨森周克斌倪德志王雷
Owner CHINA AGRI UNIV
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