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A universal method for the preparation of functional nanomaterials/cellulose composite aerogels using the principle of origami

A composite aerogel and nanomaterial technology, which is applied in the field of functional nanocomposite material preparation, can solve the problems of complicated preparation methods, stacking of functional materials, etc., achieves good repeatability, strong universality, and solves stacking problems. Effect

Active Publication Date: 2022-07-22
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of functional material stacking, complicated preparation methods and environmental risks in the above-mentioned prior art, and to provide a general method for preparing functional nanomaterial / cellulose composite aerogels using the principle of Miura origami. Appropriate method and application

Method used

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  • A universal method for the preparation of functional nanomaterials/cellulose composite aerogels using the principle of origami
  • A universal method for the preparation of functional nanomaterials/cellulose composite aerogels using the principle of origami
  • A universal method for the preparation of functional nanomaterials/cellulose composite aerogels using the principle of origami

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Embodiment 1

[0054] A universal method for preparing functional nanomaterial / cellulose composite aerogel using Miura origami principle, the method comprises the following steps:

[0055] (1) Weigh a certain mass of functional nanomaterials and dissolve them in ultrapure water, in which the functional nanomaterials TiO 1.47 The mass of / C is 10mg, the volume of ultrapure water is 10mL, and the resistivity is 18.20MΩ·cm -1 , shake and shake well, then add bacterial cellulose solution with a mass concentration of 0.5% and a volume of 5 mL into the system, seal with the parafilm, and stir at room temperature for 1 h, the rotation speed is 300 rpm, and then stand for 8 h, and the obtained uniform mixing The solution undergoes a gel reaction;

[0056] (2) adding a certain volume of tert-butanol solution to the solution after the above-mentioned gel reaction, wherein the volume ratio of the tert-butanol solution and the above-mentioned overall solution is 1:20, stirring at room temperature for 5...

Embodiment 2

[0073] A universal method for preparing functional nanomaterial / cellulose composite aerogel using Miura origami principle, the method comprises the following steps:

[0074] (1) Weigh a certain mass of functional nanomaterials and dissolve them in ultrapure water, in which the functional nanomaterials TiO 1.47 The mass of / C is 10mg, the volume of ultrapure water is 50mL, and the resistivity is 18.20MΩ·cm -1 , shake and shake well, then add bacterial cellulose solution with a mass concentration of 0.5% and a volume of 5 mL into the system, seal with the parafilm, and stir at room temperature for 1 h, the rotation speed is 300 rpm, and then stand for 8 h, and the obtained uniform mixing The solution undergoes a gel reaction;

[0075] (2) adding a certain volume of tert-butanol solution to the solution after the above-mentioned gel reaction, wherein the volume ratio of the tert-butanol solution and the above-mentioned overall solution is 1:20, stirring at room temperature for 5...

Embodiment 3

[0078] A universal method for preparing functional nanomaterial / cellulose composite aerogel using Miura origami principle, the method comprises the following steps:

[0079] (1) Weigh a certain mass of functional nanomaterials and dissolve them in ultrapure water, in which the functional nanomaterials TiO 1.47 The mass of / C is 100mg, the volume of ultrapure water is 10mL, and the resistivity is 18.20MΩ·cm -1 , shake and shake well, then add bacterial cellulose solution with a mass concentration of 0.5% and a volume of 5 mL into the system, seal with the parafilm, and stir at room temperature for 1 h, the rotation speed is 300 rpm, and then stand for 8 h, and the obtained uniform mixing The solution undergoes a gel reaction;

[0080] (2) adding a certain volume of tert-butanol solution to the solution after the above-mentioned gel reaction, wherein the volume ratio of the tert-butanol solution and the above-mentioned overall solution is 1:20, stirring at room temperature for ...

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Abstract

The invention relates to a method for preparing functional nanomaterial / cellulose composite aerogel, comprising the following steps: (1) preparing or preparing functional nanomaterial; (2) dispersing it in ultrapure water, shaking and shaking well , and then add cellulose solution to the dispersion liquid, fully stir, and let stand; (3) add tert-butanol solution to the mixed solution, stir evenly, transfer it to a mold for freezing, and then freeze-dry it to obtain functional nanometers Material / cellulose composite aerogel; (4) After compacting it, it is folded based on the origami principle and then vacuum-packed for preservation. The invention makes full use of the soft and foldable properties of the aerogel material, adopts the Miura origami method to easily realize the folding and unfolding of the material, better solves the technical bottleneck that the aerogel material is bulky and difficult to transport, and realizes the maximum utilization of the material At the same time, through the replacement of functional materials, composite aerogels of different functional types can be obtained, which has strong universality.

Description

technical field [0001] The invention relates to the technical field of preparation of functional nano-composite materials, in particular to a universal method and application for preparing functional nano-material / cellulose composite aerogels by utilizing the Miura origami principle. Background technique [0002] With the rapid development of nanotechnology in today's society, various new nanomaterials and their structures have emerged in various research reports at home and abroad. The superior properties, application prospects and commercial value of nanoscale materials in energy conversion (such as CO 2 Reduction), environmental protection (such as degradation of organic pollutants), biological therapy (such as nano-drug loading) and other fields are frequently mentioned. However, in the current process of material synthesis and use, the secondary stacking and agglomeration of the material is often caused by the strong van der Waals force inside the material, which great...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C53/02C08J9/28C08L1/02C08K3/18B29C53/80
CPCC08J9/28B29C53/02B29C53/80C08J2301/02C08K3/18C08J2201/0484
Inventor 姜越梁靖雨程嫣然彭建林思劼
Owner TONGJI UNIV
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