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Phenolic sewage power generation device based on single-enzyme inorganic composite nanoflowers and preparation method and application thereof

An inorganic composite and power generation device technology, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of low output current of enzyme fuel cells, poor sewage treatment effect, short battery life, etc. problem, to achieve the effect of good electron transport, good water solubility and strong adsorption performance

Active Publication Date: 2019-08-02
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For most enzymes, the active center of the catalytic reaction is surrounded by polypeptide chains, which hinders the electron transfer between the electrode conductor and the catalytic reaction center of the enzyme, resulting in a low output current of the enzyme fuel cell
Moreover, the enzyme is easily eluted and inactivated in actual work, resulting in problems such as short battery life and poor sewage treatment effect

Method used

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  • Phenolic sewage power generation device based on single-enzyme inorganic composite nanoflowers and preparation method and application thereof
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  • Phenolic sewage power generation device based on single-enzyme inorganic composite nanoflowers and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0034] 1. The construction of Yin and Yang poles in the power generation device:

[0035] (1) Preparation of AuNPs / Chit-RGO: prepare 5 mL of 0.5% w.t. chitosan solution (dissolved in 1% acetic acid solution), ultrasonically dissolve chitosan for 30 min, and slowly add 5 mL of 0.5 mg chitosan under stirring / mL graphene oxide (GO) solution and 23.6mg ascorbic acid (L-ascorbic acid). Put the mixture at 60°C for 6 hours to obtain a black suspension of Chit-RGO; filter it with a cellulose membrane with a diameter of 0.05 μm, wash it repeatedly with deionized water, and resuspend the precipitate in 10 mL of water for later use. Take 10mL Chit-RGO solution and 10mL AuNPs (maximum absorption peak wavelength: 498nm) solution in a centrifuge tube, sonicate for 1h, take the supernatant and centrifuge at 10,000rpm for 15min, and the precipitate is the AuNPs / Chit-RGO nanocomposite slurry.

[0036] Such as figure 2 As shown, the AuNPs / Chit-RGO composite nanomaterial is characterized by ...

Embodiment 2

[0045] Cyclic Voltammetry Behavior Determination:

[0046] The electrochemical properties of the electrodes of the power generation device were characterized and determined using a CHI660c electrochemical workstation. The graphite felt was layered and drip-coated with AuNPs / Chit-RGO and Lac nanoflower, the graphite felt was drip-coated with AuNPs / Chit-RGO / Lac nanoflower homogenate as the working electrode, the Ag / AgCl electrode was used as the reference electrode, and the Pt electrode was used as the counter electrode. 50 mM citric acid / Na at pH=5 2 HPO 4 The cyclic voltammetry behavior of the electrode is measured by cyclic voltammetry curve (CV) in the buffer solution, and the implementation results are as follows Figure 5 As shown, in the figure 1 is the cyclic voltammetry behavior of graphite felt layered drop-coated AuNPs / Chit-RGO and Lac nanoflower, and 2 is the cyclic voltammetry behavior of graphite felt drop-coated AuNPs / Chit-RGO / Lac nanoflower homogenate, which ca...

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Abstract

The invention discloses a phenolic sewage power generation device based on single-enzyme inorganic composite nanoflowers and a preparation method and an application thereof. The device includes a cathode electrode, an anode electrode and a cathode and cathode bipolar chamber, wherein the cathode electrode and the anode electrode are graphite felt electrodes modified by the laccase inorganic composite nanoflowers (AuNPs / Chit-RGO / Lac nanoflower) loaded by gold nanoparticles / chitosan-reduced graphene oxide, substrates are oxygen and phenolic contaminants, and the substrates in the bipolar chamberare catalyzed by copper ions of different valences in the laccase catalytic reaction center. The device is advantaged in that an electrode material has good holding capacity, fuel cells with the samepositive and negative electrodes are designed through utilizing different valence states of the laccase reaction center, and problems of poor fuel cell enzyme immobilization effect, low output current and complicated process design in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of enzyme fuel cells, and in particular relates to a phenolic sewage power generation device based on single-enzyme inorganic composite nanoflowers and its preparation method and application. Background technique [0002] There are three main types of phenolic wastewater treatment methods that are widely used at present. One is the electrochemical oxidation catalytic method, that is, chemical treatment. The second is physical treatment, including activated carbon adsorption, zeolite adsorption and extraction. The physical treatment method requires extremely high treatment conditions, and the equipment is expensive. In recent years, the research on activated carbon has focused on reducing the production cost and improving the adsorption performance and yield of activated carbon. There is still a contradiction between improving the adsorption performance of activated carbon and reducing the production cost ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90H01M8/16C02F3/34B82Y30/00C02F101/34
CPCH01M4/9008H01M4/9075H01M4/8803H01M4/8842H01M8/16B82Y30/00C02F3/342C02F3/005C02F2101/345Y02E60/50
Inventor 戴志晖王雪钰韦天香崔馨文
Owner NANJING NORMAL UNIVERSITY
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