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Chitosan-graphene oxide sponge, preparing method and application

A graphene sponge and chitosan technology, which is applied in the direction of biochemical fuel cells and the like, can solve the problems of disintegration and rupture of the chitosan system, and achieve the effects of simple preparation method, easy adhesion and growth, and low cost.

Active Publication Date: 2018-05-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, chitosan sponge or chitosan gel exists in the solution containing microorganisms for a long time, and the disintegration and rupture of the chitosan system are prone to occur.

Method used

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  • Chitosan-graphene oxide sponge, preparing method and application
  • Chitosan-graphene oxide sponge, preparing method and application
  • Chitosan-graphene oxide sponge, preparing method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Get a certain quality of graphite oxide, prepare the graphite oxide suspension of 4mg / mL;

[0040] (2) Place the suspension in step (1) in an ultrasonic cleaning machine for ultrasonic cleaning for 60 minutes to make it evenly dispersed to obtain a graphene oxide solution;

[0041] (3) Take 100 mL of the solution prepared in step (2), add 3 mL of glacial acetic acid drop by drop under the condition of magnetic stirring, and mix well;

[0042] (4) Add 0.1mol / L FeCl dropwise to the solution in step (3) under the condition of magnetic stirring 2 Solution 5mL, and mix well;

[0043] (5) Add 4mL of 1mol / L sodium benzenesulfinate solution dropwise to the solution in step (4) under the condition of magnetic stirring, and mix well;

[0044] (6) slowly add the chitosan of 2g in the solution in step (5) under the situation of magnetic stirring (or mechanical stirring), and mix homogeneously;

[0045] (7) vacuumizing the solution in step (6), removing the bubbles in the sol...

Embodiment 2

[0051] (1) Get a certain quality of graphite oxide, prepare the graphite oxide suspension of 4mg / mL;

[0052] (2) placing the suspension in step (1) in an ultrasonic cleaning machine for ultrasonic cleaning for 60 min to disperse it evenly to obtain a graphene oxide solution;

[0053](3) Take 100 mL of the solution in step (2), add 3 mL of glacial acetic acid drop by drop under the condition of magnetic stirring, and mix well;

[0054] (4) Add 0.1mol / L FeCl dropwise to the solution in step (3) under the condition of magnetic stirring 2 Solution 25mL, and mix well;

[0055] (5) Add 4 mL of 1 mol / L sodium benzenesulfinate solution dropwise to the solution in step (4) under the condition of magnetic stirring, and mix well;

[0056] (6) slowly add the chitosan of 4g in the solution in step (5) under the situation of magnetic stirring (or mechanical stirring), and mix homogeneously;

[0057] (7) vacuumizing the solution in step (6), removing the bubbles in the solution to obtain...

Embodiment 3

[0063] (1) Get a certain quality of graphite oxide, prepare the graphite oxide suspension of 4mg / mL;

[0064] (2) placing the suspension in step (1) in an ultrasonic cleaning machine for ultrasonic cleaning for 60 min to disperse it evenly to obtain a graphene oxide solution;

[0065] (3) Take 100 mL of the solution in step (2), add 3 mL of glacial acetic acid drop by drop under the condition of magnetic stirring, and mix well;

[0066] (4) Add 0.1mol / L FeCl dropwise to the solution in step (3) under the condition of magnetic stirring 2 Solution 50mL, and mix well;

[0067] (5) Add 4mL of 1mol / L sodium benzenesulfinate solution dropwise to the solution in step (4) under the condition of magnetic stirring, and mix well;

[0068] (6) slowly add the chitosan of 2g in the solution in step (5) under the situation of magnetic stirring (or mechanical stirring), and mix homogeneously;

[0069] (7) vacuumizing the solution in step (6), removing the bubbles in the solution to obtain ...

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Abstract

The invention discloses a chitosan-graphene oxide sponge, a preparing method and application. The preparing method includes the following steps of taking a graphene oxide solution, sequentially addingglacial acetic acid, a FeCl2 solution, a benzene sulfinic acid sodium salt solution and chitosan to the graphene oxide solution, vacuumizing the solution to obtain bubble-free slurry, freeze-drying the slurry, placing the slurry in an NaOH solution to be soaked to primarily obtain a sponge body, heating the sponge body at a constant temperature to obtain the chitosan-graphene oxide sponge. The chitosan-graphene oxide sponge prepared through the method can be used for preparing a breathable microbial fuel battery; the preparing method is simple, cost is low, and the prepared sponge has quite good elasticity, has a rich pore structure, is large in specific surface area, has a plentiful of active sites, and is beneficial for adhesion of microorganisms. By adding FeCl2, the degradation and decomposition of the sponge by the microorganisms can be effectively prevented, and ferroferric oxide is formed and has conductivity and biocompatibility.

Description

technical field [0001] The invention belongs to the technical field of preparation of polymer functional materials, and in particular relates to a chitosan-graphene oxide sponge, a preparation method and an application. Background technique [0002] With the rapid development of society and the improvement of people's living standards, the problem of environmental pollution is also increasing, which seriously threatens the ecological environment on which we live. The traditional sewage treatment methods not only need to consume a lot of energy, but also the treatment effect is not ideal. Microbial fuel cells use anaerobic microorganisms to catalyze and degrade organic pollutants in water and convert them into electrical energy, which better solves the problem of energy consumption in the process of treating pollutants. At present, the anode materials used in microbial fuel cells are basically carbon cloth, graphite block, carbon felt or graphite particles, etc. Although the...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08L5/08C08K9/02C08K3/04H01M8/16
CPCC08J9/28C08J2201/0484C08J2305/08C08K3/04C08K9/02H01M8/16Y02E60/50
Inventor 于飞王成显陈德贤石岩姚温浩张方倪腾飞韩生张海英
Owner SHANGHAI INST OF TECH
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