Unlock instant, AI-driven research and patent intelligence for your innovation.

an aminofe 3 o 4 @mcm-41 nanoparticles and their application in graphite felt anodes for microbial fuel cells

A microbial battery and nanoparticle technology, which is applied in biochemical fuel cells, battery electrodes, electrochemical biocombination treatment, etc., can solve the problems of low power density, poor energy conversion efficiency, and slow electron transfer of MFC, so as to improve the efficiency of wastewater treatment , lower internal resistance, better electrochemical performance

Active Publication Date: 2022-02-18
SHANDONG JIANZHU UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Traditional MFCs have low power density and poor energy conversion efficiency due to slow electron transfer between bacteria and electrodes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • an aminofe <sub>3</sub> o <sub>4</sub> @mcm-41 nanoparticles and their application in graphite felt anodes for microbial fuel cells
  • an aminofe <sub>3</sub> o <sub>4</sub> @mcm-41 nanoparticles and their application in graphite felt anodes for microbial fuel cells
  • an aminofe <sub>3</sub> o <sub>4</sub> @mcm-41 nanoparticles and their application in graphite felt anodes for microbial fuel cells

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, this example provides a method for preparing aminated Fe3O4@MCM-41 nanoparticles

[0039]Ethylene glycol (200 mL), FeCl3·6H2O (6.4 g), SDS (3.0 g) and sodium acetate (16 g) were mixed, stirred at room temperature for 30 minutes, and poured into a Teflon bottle. After heating at 200°C for 8 hours, a solid sample was collected to obtain Fe3O4 particles. These Fe3O4 particles (0.2 g) were then dispersed in ethanol (40 mL), and ultrasonically oscillated to disperse the particles. The following reagents were added sequentially, including ethanol (40 mL), deionized water (20 mL), concentrated ammonia (1.0 mL) and ethyl orthosilicate TEOS (0.2 g). The cloudy solution was stirred at room temperature for 6 hours, and then the solid product was washed with deionized water to obtain silica cores. Ethanol (60mL), deionized water (80mL), cetyltrimethylammonium bromide CTAB (0.30g), concentrated ammonia (1.0mL) and tetraethyl orthosilicate (TEOS) (0.8g), followed by The...

Embodiment 2

[0042] Example 2 The preparation method of graphite felt anode for microbial battery in this example

[0043] The graphite felt was cut into a rectangle (thickness 2mm) of 1.5cm×1.0cm, and washed with 1mol / L HCl, 1mol / LNaOH, 3% H2O2, acetone, and deionized water at 50°C. Let it dry for later use. Fix the graphite rod on one side of the graphite felt with conductive silver glue, seal and fix it with epoxy resin glue, and dry at room temperature to ensure that the effective area of ​​the graphite felt is 1.0cm×1.0cm.

[0044] Accurately weigh Fe3O4@MCM-41-NH2 and washed and dried MWCNT-COOH according to the mass ratio of 3:7, and grind them in a mortar to mix the two evenly, and due to the hydrogen bond between the amino group and the carboxyl group , the two can be combined into Fe3O4@MCM-41 / MWCNT nanocomposites. According to the ratio of 10mg of the mixture dispersed in 1mL of 1% Nafion / ethanol solution, ultrasonically disperse evenly, drop every 500μL on 1cm2 graphite felt,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of microbial battery applications, and in particular relates to an aminated magnetic core-shell Fe3O4@MCM‑41 nanoparticle and its application in graphite felt anodes for microbial batteries. The Fe3O4@MCM‑41 / MWCNT modified graphite felt electrode prepared by the present invention has a large specific surface area, and its application to the MFC can increase the amount of microorganisms attached; the Fe3O4@MCM‑41 / MWCNT modified graphite felt electrode has better oxidation Reduction, when it is applied to the anode of MFC, the oxidation-reduction reaction is more likely to occur on the anode, so that the wastewater treatment efficiency of MFC can be improved. Fe3O4@MCM‑41 / MWCNT modified graphite felt anode has low resistance and good electrochemical performance. Applying Fe3O4@MCM‑41 / MWCNT modified graphite felt electrode to the anode of MFC can reduce the internal resistance of MFC, improve the power density (2289mW m‑2) and COD removal rate (90%) of MFC.

Description

technical field [0001] The invention belongs to the technical field of microbial battery applications, and in particular relates to an aminated Fe3O4@MCM-41 nanoparticle and its application in a graphite felt anode of a microbial fuel cell. Background technique [0002] Microbial fuel cell (MFC) is a promising green energy source. Although MFC has many advantages, the power of fuel cell is still low, which limits its application in the energy production industry. [0003] Anode material, like cathode and electrolyte, is one of the key factors affecting the energy conversion of MFC. In the process of MFC power generation, because the electron transfer process from microorganisms to the anode is relatively slow, it is usually necessary to use an electron mediator to achieve fast electron transfer. Mediators such as 2-hydroxy-1,4-naphthoquinone (HNQ) or thionine are often used as electron shuttle agents to facilitate electron transfer. These types of MFCs are called mediated ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/96H01M8/16C02F3/00B82Y40/00
CPCH01M4/86H01M4/8878H01M4/96H01M8/16C02F3/005B82Y40/00H01M2004/8684Y02E60/50
Inventor 李雪梅朱艳艳魏小锋赛东舜成文清韩泰森东玉洁
Owner SHANDONG JIANZHU UNIV