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Preparation method and application of polyaniline cathode material for microbial electro-Fenton fuel cell

A fuel cell and cathode material technology, applied in the field of green energy and environmental engineering, can solve problems such as low power generation efficiency, achieve the effects of simple operation, low system energy consumption, and avoid secondary pollution

Active Publication Date: 2020-11-20
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Microbial electric Fenton fuel cell is a green electricity production technology, using anode microorganisms to decompose organic matter to generate electrons and protons, electrons are transferred to the cathode through an external circuit to form a current, converting chemical energy into electrical energy, and protons arrive through the proton exchange membrane cathode, the disadvantage is that the current electricity generation efficiency is low, therefore, it is very necessary to broaden the application range of microbial electric Fenton fuel cells at low voltage

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  • Preparation method and application of polyaniline cathode material for microbial electro-Fenton fuel cell
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  • Preparation method and application of polyaniline cathode material for microbial electro-Fenton fuel cell

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Embodiment 1

[0031] The invention provides a kind of preparation method of polyaniline cathode material for microbial electric Fenton fuel cell, it comprises the following steps:

[0032] Step 1 Electrodeposition of polyaniline on carbon brushes

[0033] S1: a. Pretreatment of carbon brushes: first soak the carbon brush material with acetone for 10 hours, then calcinate in a muffle furnace at 450°C for 0.5-1 hours;

[0034] b. Electrodeposition by cyclic voltammetry: Sonicate the pretreated carbon brush in 130mL electrolyte for 5 minutes, wherein the electrolyte consists of the following components in terms of molar mass concentration: 0.1 mol / L aniline, 0.5 mol / L H 2 SO 4 , the solvent is water; then the cyclic voltammetry scan is carried out in the electrolyte, and the cyclic voltammetry is carried out for 1 cycle in the potential range of –0.2 to 1.2 V, and the scan rate is 10 mV s –1 ;Cyclic voltammetry was performed for 0 cycles in the potential range of –0.2 to 0.8 V, and the scan...

Embodiment 2

[0044] The invention provides a kind of preparation method of polyaniline cathode material for microbial electric Fenton fuel cell, it comprises the following steps:

[0045] Step 1 Electrodeposition of polyaniline on carbon brushes

[0046] S1: a. Pretreatment of carbon brushes: first soak the carbon brush material with acetone for 10 hours, then calcinate in a muffle furnace at 450°C for 0.5-1 hours;

[0047] b. Electrodeposition by cyclic voltammetry: Sonicate the pretreated carbon brush in 130mL electrolyte for 5 minutes, wherein the electrolyte consists of the following components in terms of molar mass concentration: 0.1 mol / L aniline, 0.5 mol / L H 2 SO 4 , the solvent is water; then the cyclic voltammetry scan is carried out in the electrolyte, and the cyclic voltammetry is carried out for 1 cycle in the potential range of –0.2 to 1.2 V, and the scan rate is 10 mV s –1 ; Then perform 1 cycle of cyclic voltammetry in the potential range of –0.2 to 0.8 V, the scan rate ...

Embodiment 3

[0057] The invention provides a kind of preparation method of polyaniline cathode material for microbial electric Fenton fuel cell, it comprises the following steps:

[0058] Step 1 Electrodeposition of polyaniline on carbon brushes

[0059] S1: a. Pretreatment of carbon brushes: first soak the carbon brush material with acetone for 10 hours, then calcinate in a muffle furnace at 450°C for 0.5-1 hours;

[0060] b. Electrodeposition by cyclic voltammetry: Sonicate the pretreated carbon brush in 130mL electrolyte for 5 minutes, wherein the electrolyte consists of the following components in terms of molar mass concentration: 0.1 mol / L aniline, 0.5 mol / L H 2 SO 4 , the solvent is water; then the cyclic voltammetry scan is carried out in the electrolyte, and the cyclic voltammetry is carried out for 1 cycle in the potential range of –0.2 to 1.2 V, and the scan rate is 10 mV s –1 ; and then 4 cycles of cyclic voltammetry were performed in the potential range of –0.2 to 0.8 V, an...

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Abstract

The invention discloses a preparation method and application of a polyaniline cathode material for a microbial electro-Fenton fuel cell, which comprises the following steps: preparing polyaniline witha nano reticular structure on a carbon brush by adopting a two-step electro-deposition method, performing carbonizing and activating to obtain a metal-free electrode with an excellent performance, and applying the metal-free electrode to a bioelectricity-Fenton cathode. The material can overcome the problem of metal leaching and can avoid the inherent defect of secondary pollution. The cathode synthesis process is also easy to operate, free of adhesives and free of toxic chemicals, which makes it scalable, economical, efficient, safe and environmentally friendly. The microbial fuel cell and the electro-Fenton are combined into a system, azo dye methyl orange wastewater is degraded, the treatment effect is good, the system energy consumption is low, and the operation is simple and convenient.

Description

technical field [0001] The invention belongs to the technical field of green energy and environmental engineering, and specifically relates to a preparation method and application of a polyaniline cathode material for a microbial electric Fenton fuel cell. Background technique [0002] At present, azo dyes have been widely used for a long time. Due to their high chemical oxygen demand and unique chromaticity, and the fact that they discharge pollutants during the production process, they have caused serious environmental problems. And because of the carcinogenicity and teratogenicity of the aromatic amine obtained by its decomposition, it also poses a serious threat to human health. Although a series of methods have been developed to treat azo dye wastewater, however, the high cost, incomplete azo dye degradation, secondary pollution, and high energy consumption require the development of more economical and environmentally friendly strategies to treat azo dye wastewater. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90H01M8/16C02F3/00C02F101/30
CPCH01M4/8853H01M4/8878H01M4/9008H01M8/16C02F3/005C02F2101/308Y02E60/50
Inventor 孙剑辉陈如艳张晶李冰宇刘瑜辉孙蓓蕾吴宇涵张可意张卓亚
Owner HENAN NORMAL UNIV