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Electrocatalytic composite material based on bacterial cellulose as well as preparation method and application of electrocatalytic composite material

A technology of bacterial cellulose and composite materials, applied in circuits, electrical components, battery electrodes, etc., can solve problems such as unsatisfactory catalytic effect and poor stability, and achieve the effect of avoiding agglomeration and aggregation, low cost and good application prospects.

Pending Publication Date: 2022-05-20
HEBEI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bacterial cellulose-based electrocatalytic composite material and its preparation method and application to solve the problems of poor stability and unsatisfactory catalytic effect of existing materials

Method used

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  • Electrocatalytic composite material based on bacterial cellulose as well as preparation method and application of electrocatalytic composite material
  • Electrocatalytic composite material based on bacterial cellulose as well as preparation method and application of electrocatalytic composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Cut the bacterial cellulose membrane into square pieces of 4 square centimeters, then put it into a beaker and boil for 20 minutes. Cool to room temperature before use.

[0035] (2) Prepare 50mL of hydrothermal solution, in which the volume ratio of water, ethanol, ferric iron ethanol solution and dimethyl ammonium acetate mixture is 1.5:1:1:35. Ferric iron ethanol solution is ferric nitrate nonahydrate ethanol solution, the concentration is 0.15mol / L, the dimethylammonium acetate mixed solution is the mixed solution of dimethylammonium acetate and polyacrylonitrile, and the concentration of dimethylammonium acetate is 0.3mol / L L.

[0036] (3) Put 4 square tablets of bacterial cellulose into 50mL of hydrothermal solution, then place them in an autoclave, and heat them at 110°C for 22h. After the completion of the hydrothermal process, the autoclave was naturally cooled to room temperature, and the iron-MOF-loaded bacterial cellulose was taken out and washed with m...

Embodiment 2

[0040] (1) Cut the bacterial cellulose membrane into square pieces of 4 square centimeters, then put it into a beaker and boil for 20 minutes. Cool to room temperature before use.

[0041] (2) Prepare 50mL of hydrothermal solution, in which the volume ratio of water, ethanol, ferric ethanol solution and dimethylammonium acetate mixture is 1:1:1:35. Ferric iron ethanol solution is ferric nitrate nonahydrate ethanol solution, the concentration is 0.2mol / L, the dimethylammonium acetate mixed solution is the mixed solution of dimethylammonium acetate and polyacrylonitrile, and the concentration of dimethylammonium acetate is 0.4mol / L L.

[0042] (3) Put 4 square tablets of bacterial cellulose into 50mL of hydrothermal solution, then put them in an autoclave, and heat them at 120°C for 20h. After the completion of the hydrothermal process, the autoclave was naturally cooled to room temperature, and the iron-MOF-loaded bacterial cellulose was taken out and washed with methanol.

...

Embodiment 3

[0045] (1) Cut the bacterial cellulose membrane into square pieces of 4 square centimeters, then put it into a beaker and boil for 20 minutes. Cool to room temperature before use.

[0046] (2) Prepare 50mL of hydrothermal solution, in which the volume ratio of water, ethanol, ferric ethanol solution and dimethyl ammonium acetate mixture is 2:1:1:40. Ferric iron ethanol solution is ferric nitrate nonahydrate ethanol solution, concentration is 0.1mol / L, dimethyl ammonium acetate mixed solution is dimethyl ammonium acetate and polyacrylonitrile mixed solution, dimethyl ammonium acetate concentration is 0.2mol / L L.

[0047] (3) Put 4 bacterial cellulose squares into 50mL of hydrothermal solution, then place them in an autoclave, and heat them at 100°C for 23h. After the completion of the hydrothermal process, the autoclave was naturally cooled to room temperature, and the iron-MOF-loaded bacterial cellulose was taken out and washed with methanol.

[0048] (4) Freeze-dry the iro...

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Abstract

The invention provides an electrocatalytic composite material based on bacterial cellulose as well as a preparation method and application of the electrocatalytic composite material. The preparation method comprises the following steps: (a) boiling bacterial cellulose in boiling water for 15-40 minutes; (b) uniformly mixing a ferric iron ethanol solution, water, ethanol and an ammonium dimethylacetate mixed solution in a container at room temperature to obtain a hydrothermal solution; (c) putting the bacterial cellulose into the hydrothermal solution for hydrothermal treatment at the temperature of 100-120 DEG C for 20-23 hours; and (d) after the reaction is completed, taking out the bacterial cellulose, washing, drying, and calcining in an argon saturation state at the calcining temperature of 600-800 DEG C for 1-3 hours. The iron MOF prepared by the method can be uniformly loaded on the bacterial cellulose, and has good dispersity and good electro-catalysis effect. The method is environment-friendly, raw materials are easy to find, and the cost is low.

Description

technical field [0001] The invention relates to the technical field of preparation of electrocatalytic materials, in particular to an electrocatalytic composite material based on bacterial cellulose and its preparation method and application. Background technique [0002] With the rapid development of the economy, resources are gradually decreasing and tense, and the pollution caused by people's vigorous development of the environment cannot be underestimated. Therefore, scientists try their best to find and research clean energy and new energy. Catalysts can maximize the utilization of energy, and naturally become the main research focus of scientists. [0003] Metal-organic framework (MOF) is a new type of nanoporous crystalline material, which has the advantages of good chemical stability, large specific surface area, high porosity and strong changeability. Bacterial cellulose is a porous network nanoscale biopolymer synthesized by microbial fermentation. It not only ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88
CPCH01M4/9041H01M4/9075H01M4/8825Y02E60/50
Inventor 张文明李玲赵晓辉朱前程李战雨付超超赵有为
Owner HEBEI UNIVERSITY
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