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Bionic nano superstructure material preparation method using white envelope as model

A biomimetic nano- and superstructure technology, applied in chemical methods, chemical instruments and methods, chemical/physical/physical-chemical processes, etc. to make liquids react with liquids, can solve the problems of environmental pollution and high cost, and achieve a simple and simple process. Control, the effect of low production cost

Inactive Publication Date: 2004-08-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These processes often have disadvantages such as environmental pollution or high cost. Exploring the preparation process of such materials that is simple and feasible and meets the requirements of sustainable development will have important industrial practical value
So far, there has been no report of using biological egg membrane as a template to prepare nano-bionic superstructures with various morphologies through a simple process.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] First take out the egg whites and yolks from commercially available eggs (or duck eggs, goose eggs), and use physical methods to remove the minerals on the surface of the egg shells, and then wash them with deionized water to obtain an egg film with a thickness of about 70 μm. .

[0017] Take 0.1mol / L of Na 2 SO 4 Solution 20ml and 0.1mol / L BaCl 2 20ml of the solution was placed on both sides of the egg membrane. At this time, the pH=7. After reacting for 10 hours at room temperature, the dispersed system after reaction on both sides of the egg membrane was taken, and conventional centrifugation was carried out respectively, and the clarified liquid was discarded and kept. The next product is washed with chemically pure acetone and deionized water in turn, and the egg membrane is also washed with chemically pure acetone and deionized water in turn, and the resulting products are combined to obtain a coniferous nano-bionic superstructure material assembled from nanopar...

Embodiment 2

[0020] The preparation method of egg film is identical with embodiment 1. Take 0.1mol / L of Na 2 SO 4 Solution 20ml and 0.1mol / L BaCl 2 20ml of the solution was placed on both sides of the egg membrane, and an appropriate amount of hydrochloric acid was added to adjust the pH of the solution to about 2. After reacting at room temperature for 10 hours, the dispersion systems on both sides of the egg membrane were taken for centrifugation, and the clarified liquid was discarded. Chemically pure acetone and deionized water are washed and combined to obtain a conch-like nano-bionic superstructure assembled from nanoparticles.

Embodiment 3

[0022] The preparation method of egg film is identical with embodiment 1. Take 0.1mol / L of Na 2 SO 4 Solution 20ml and 0.1mol / L BaCl 2 20ml of the solution was placed on both sides of the egg membrane, and then anhydrous ethylenediamine was added to it to adjust the pH of the solution to 11-13. After reacting at room temperature for 10 hours, the dispersion systems on both sides of the egg membrane were taken for centrifugation. The clarified solution was discarded, washed with acetone and deionized water in sequence, and then combined to obtain a petal-shaped nano-bionic superstructure assembled from nanoparticles.

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Abstract

The present invention relates to a method for preparing bionic nano superstructure material by using egg membrane as template. Said method includes the following steps: firstly, removing surface mineral from egg shell to obtain egg membrane, washing it with deionized water for stand-by; then using the calcium and barium ions contained cationic compound solution whose concentration is 0.05-0.20 mol / L and ionic mole number ratio is correspondent to product chemical formula and anionic compound solution containing chromic radical, sulfuric radical, molybdic radical and tungstic radical, placing them respectively at two sides of egg membrane, regulating pH, reacting for 10-15 hr. at room temp., finally taking out reaction products from two sides of egg membrane, centrifugal separating at room temp., removing clear liquor, successively using acetone and deionized water to wash precipitate and wash egg membrane, combining all the products so as to obtain bionic nano superstructure material with various forms.

Description

technical field [0001] The invention relates to a preparation technology of a bionic nanometer superstructure material. Specifically, it is a method of using egg membrane as a template to prepare bionic nano-superstructure materials such as coniferous, snail-shaped, petal-shaped, feather-shaped, and prism-shaped. Background technique [0002] Bionic nano-superstructure material is a kind of nano-assembled bionic material with nanometer (1 billionth of a meter) scale structure system with coniferous, snail-like, petal-like, feather-like, prismatic and other shapes. Material. This kind of biomimetic nano-superstructure material can be used for micro-printing, internal drug filling, making nano-robots to remove human waste, etc. Therefore, the preparation and research of this type of material is one of the hot spots in the field of new material research in recent years. [0003] At present, the preparation method of the biomimetic nano-superstructure ...

Claims

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Application Information

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IPC IPC(8): B01J14/00B01J19/00
Inventor 吴庆生刘金库丁亚平
Owner TONGJI UNIV
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