Poly-3-aminophenylboronic acid carbon-based microbial fuel cell anode and preparation method thereof

Abstract

The invention discloses a poly-3-aminophenylboronic acid carbon-based microbial fuel cell anode and a preparation method thereof. The anode is formed by loading a porous poly-3-aminophenylboronic acidfilm on a carbon base at a speed of 0.05-0.15 mg / cm<2>. The preparation method comprises the following steps: (1) coating the carbon base with a hard template agent sol or solution, and performing natural drying to obtain a carbon-based hard template; (2) putting the template into PBS buffer solution containing 3-aminophenylboronic acid and sodium fluoride, carrying out electropolymerization by cyclic voltammetry, and performing natural drying to obtain a carbon-based hard template bearing the poly 3-aminophenylboronic acid; (3) soaking the hard template in acid etching solution, and performing etching, water washing and drying at room temperature to obtain the anode. The anode provided by the invention has good biocompatibility and high bacterial loading capacity, and the assembled MFC electrode / electrogenic bacteria have the advantages of high extracellular electron transfer rate, high power density, high output power and good electrogenic performance. The method is simple in process, low in cost and suitable for industrial production.

Description

technical field [0001] The invention relates to a carbon-based microbial fuel cell anode and a preparation method thereof, in particular to a carbon-based microbial fuel cell anode loaded with porous poly-m-aminophenylboronic acid and a preparation method thereof. Background technique [0002] Microbial fuel cell (MFC) is a special fuel cell that converts chemical energy in organic matter into electrical energy by decomposing organic matter by microorganisms to release electrons. It is not only a clean energy source, but also a new technology for sewage treatment, and has become one of the research hotspots in related fields at home and abroad. [0003] In microbial fuel cells, considering that oxygen entering the anode chamber will hinder the generation of electric energy, reduce Coulombic efficiency and increase the anode potential, therefore, an exchange membrane needs to be placed between the two electrodes to form a separate anode chamber and cathode chamber, thereby re...

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Problems solved by technology

Although the conductivity of the graphene bioelectrode is strong, the specific surface area is large, and it is environmentally friendly, due to the hydrophobicity of the carbon material itself and the antibacterial properties of graphene to bacteria, the graphene bioelectrode also has the same adhesion to bacteria. Poor, poor biocompatibility

[0009] In summary, most of the existing anode materials have technical defects such as hydrophobicity, toxicity, and can only attract bacteria through electrostatic attraction, resulting in low bacterial load on the anode and affecting electricity generation performance.

In view of the shortcomings of the existing low bacterial load on the anode and the low extracellular electron transfer rate between the electrode and the electrogenic bacteria, it is urgent to develop an anode with good biocompatibility, high bacterial load, high output power, and good electricity production performance. Microbial fuel cell anode

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