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Microbial fuel cell constructed by Fe-MOF-GO film anode

A fuel cell and microorganism technology, applied in biochemical fuel cells, battery electrodes, biological water/sewage treatment, etc., can solve the problems of high potential, short cycle and low power of microbial fuel cells, achieve good biocompatibility, promote The effect of connection and enrichment

Pending Publication Date: 2021-03-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve problems such as excessive potential of microbial fuel cell, low power, and short cycle, the preparation method steps of the Fe-MOF-GO thin film used for microbial fuel cell of the present invention are as follows:

Method used

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  • Microbial fuel cell constructed by Fe-MOF-GO film anode
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  • Microbial fuel cell constructed by Fe-MOF-GO film anode

Examples

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Embodiment 1

[0032] The preparation method of the Fe-MOF-GO film that is used for microbial fuel cell in the present embodiment is carried out according to the following steps:

[0033] Step 1, the preparation of Fe-MOF nanoparticle: in the beaker of 50mL, add the water of 20ml, add 0.35g iron trichloride (FeCl 3 ) and 5.05g diaminoterephthalic acid (C 8 h 7 NO 4 ), transfer the mixed solution into a reaction kettle, react at 100-260° C. for 15 hours, centrifuge at a speed of 10,000 r / min, and pour off the supernatant. The precipitate was washed three times by centrifugation with distilled water, once by ethanol, and dried in vacuum at 60°C for 12 hours to obtain yellow Fe-MOF nanoparticles;

[0034]Step 2. Put the yellow Fe-MOF nanoparticles into the tube furnace to evacuate and then pass in nitrogen gas, raise the temperature from 20°C to 900°C at a rate of 5°C / min, keep the temperature at 900°C for 6 hours, / min rate to cool down to room temperature to obtain Fe-MOF;

[0035] Step ...

Embodiment 2

[0038] Implementation 2: Microbial fuel cells (MFCs) constructed using the Fe-MOF-GO thin film prepared by the preparation method described in Example 1:

[0039] 1. Pretreatment of required materials:

[0040] Pretreatment of carbon brushes: Put 10 carbon brushes with the carbon cloth fiber side down into a 500mL beaker, then add 450mL of acetone, soak for 30min, take it out, put it directly into a tube furnace, and burn it at 350°C After 30 minutes, cool down to room temperature naturally, take it out and put it in a 500mL beaker, seal it with parafilm, and set it aside.

[0041] Pretreatment method of Nafion membrane: 10×10cm 2 The Nafion membrane is divided into 9 parts on average, and the cut Nafion membrane is put into a 100mL beaker. In order to remove organic impurities, add 100mL3% H to the beaker 2 o 2 , placed in an oven, treated at 80°C for 30 minutes; put 100mL of 3% H 2 o 2 Pour it out, add 100mL of distilled water, put it in an oven, and treat it at 80°C fo...

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Abstract

The invention discloses a preparation method of an Fe-MOF-GO film for a microbial fuel cell and MFCs constructed by the preparation method, and belongs to the technical field of microbial fuel cells.The invention aims to solve the problems of overhigh anode potential, lower power, shorter period and the like of the existing microbial fuel cell. The preparation method of the Fe-MOF-GO film comprises the following steps of 1, dissolving FeCl3 in water, adding diaminoterephthalic acid, reacting at 150 DEG C for 15 hours, cooling, carrying out centrifugal cleaning, using deionized water to cleanfor three times, using ethanol for centrifugal cleaning for one time, and carrying out vacuum drying to obtain Fe-MOF nanoparticles; 2, calcining under the protection of N2, and cooling to room temperature; 3, grinding with rGO powder to obtain Fe-MOF-GO nano particles; 4, adding isopropanol and a Nafion solution, carrying out ultrasonic treatment to completely dissolve the isopropanol and the Nafion solution, and 5, smearing the obtained solution on the two surfaces of a pretreated carbon cloth, and naturally drying the carbon cloth, wherein the constructed microbial cell is H-type double-chamber MECs. According to the present invention, the maximum voltage of the MFCs is 0.58 V, the period reaches 8 days, and the maximum power density reaches 2245 mV / m <2>.

Description

technical field [0001] The invention belongs to the technical field of microbial fuel cells; in particular, it relates to the preparation of Fe-MOF-GO thin film anodes and the construction of microbial fuel cells. Background technique [0002] Microbial Fuel Cell (MFC) is a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy, and can complete energy conversion at normal temperature and pressure. Its basic working principle is: in the anaerobic environment of the anode chamber, the organic matter decomposes under the action of microorganisms and releases electrons and protons. The circuit is transmitted to the cathode to form an electric current, and the proton is transmitted to the cathode through the proton exchange membrane, and the oxidant gets electrons at the cathode and is reduced and combined with the proton to form water. Microbial fuel cell (MFC) is a device that utilizes biomass energy and uses bacteria as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M4/90H01M4/88C02F3/34C02F3/00
CPCH01M8/16H01M4/9041H01M4/9075H01M4/9083H01M4/8803H01M4/8828C02F3/005C02F3/34Y02E60/50
Inventor 刘丹青黄金美赵超越栾庆宇陈龙璋
Owner HARBIN UNIV OF SCI & TECH
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