A preparation method of photothermal bioanode, photothermal bioanode and application thereof

A biological anode and photothermal technology, applied in the field of electrochemical catalysis, can solve the problems of increased wastewater treatment cost, poor wastewater treatment effect, poor practicability, etc., and achieve the effects of cost economy, excellent power generation performance, and simple operation

Active Publication Date: 2021-03-30
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the wastewater treatment effect of this method is relatively poor, and the cost of wastewater treatment has also been greatly increased, and the practicability is poor.

Method used

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  • A preparation method of photothermal bioanode, photothermal bioanode and application thereof
  • A preparation method of photothermal bioanode, photothermal bioanode and application thereof
  • A preparation method of photothermal bioanode, photothermal bioanode and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this example, a photothermal bioanode is prepared, and its specific preparation process includes the following steps:

[0035] 1. Take 200 mesh sieve, 0.5g of Ti 3 AlC 2 Put in a 50mL polytetrafluoroethylene beaker, add 10mL of HF solution with a mass percentage concentration of 48%, and place the beaker on a magnetic stirrer for stirring and mixing; then, heat to 60°C, react at a constant temperature for 24h, and centrifuge to obtain Ti 3 C 2 T x As the MXene material; then, the MXene material is washed alternately and repeatedly with deionized water and absolute ethanol until the washing liquid is neutral, then placed in a vacuum drying oven at 80°C for 24 hours, taken out, and ground through a 200-mesh sieve to obtain MXene nanolayered materials.

[0036] 2. Disperse 0.25 mg of MXene nano-layered material in 0.5 mL of absolute ethanol, add 0.1 mL of binder, stir and mix to obtain a slurry; wherein, the binder is selected as a perfluorosulfonic acid polymer s...

Embodiment 2

[0039] Embodiment 2 Light-to-heat conversion performance test

[0040] 1. Grouping

[0041] Take ordinary carbon felt as the reference substance;

[0042] The photothermal bioanode prepared in Example 1 was taken as a sample.

[0043] 2. Sun exposure

[0044] Expose the reference substance and sample to sunlight for irradiation, and use an optical power density meter (TES-1333) to measure the solar power density as 1000W / m 2 , using an infrared thermal imaging camera (FTIRETS320) to observe and measure the surface heating process of the reference substance and the sample. image 3 and Figure 4 shown.

[0045] By comparison, it can be found that the MXene nano-layered material prepared by the present invention has better light absorption ability and photothermal conversion effect, and it has a wider absorption spectrum, and the range of light bands absorbed can be from ultraviolet to infrared bands, especially for infrared It has better absorption with near-infrared, and...

Embodiment 3

[0046] Application effect of embodiment 3 in three-electrode bioelectrochemical system

[0047] 1. Construct a three-electrode electrochemical system device according to the traditional method, and control the ambient temperature in the reaction vessel through an external circulating water system, use ordinary carbon felt and the photothermal bioanode prepared in Example 1 as anodes, and divide them into control group 1 and experimental group 1.

[0048] The anodes of control group 1 and experimental group 1 were cut into a square shape of 4cm×4cm, with a thickness of 0.5cm. Titanium wire was used as an auxiliary electrode, and a saturated calomel electrode was used as a reference electrode to construct a three-electrode system microbial electrochemical system.

[0049] 2. Use anaerobic mixed strain solution and sodium acetate culture solution, place it in a constant temperature incubator at 30°C for cultivation, and connect it to an electrochemical workstation (Shanghai Chenh...

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Abstract

The invention belongs to the technical field of electrochemical catalysis, in particularly relates to a photothermal biological anode, a preparation method thereof and an application of the photothermal biological anode. The preparation method includes the steps: mixing Ti3AlC2 and strong HF solution, and performing reaction for 24-36 hours at the temperature ranging from 60 DEG C to 80 DEG C to obtain Ti3AlC2 to serve as an MXene material; dispersing the MXene material into absolute ethyl alcohol, adding a binding agent, mixing mixture to obtain slurry; coating the surface of a carbon felt with the slurry, and drying the carbon felt to obtain the photothermal biological anode. The proportion of the MXene material to the binding agent is (100-300) mg: (0.1-0.2) mL. The method is simple tooperate and economical in cost, and the photothermal biological anode prepared by the method has good photothermal effect, is applied to preparation of a microbiological electrochemical system and a microbial fuel cell and economical in cost and can provide suitable heat for growth of microorganisms by the aid of solar energy in a low-temperature environment.

Description

technical field [0001] The invention belongs to the technical field of electrochemical catalysis, and specifically relates to a preparation method of a photothermal biological anode, a photothermal biological anode and an application thereof. Background technique [0002] Microbial electrochemical system is a new technology that can not only treat wastewater, but also generate electricity by degrading organic matter in wastewater, and has become a research hotspot in the field of electrochemical catalysis. However, the low temperature environment is not conducive to the growth of microorganisms. It is difficult to start the microbial electrochemical system at low temperature in winter, the operation effect is poor, and the power generation effect is low, which limits the practical application of the microbial electrochemical system. [0003] At present, in order to overcome the above-mentioned problems, a method of heating and insulating the entire waste water inlet system h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M8/16H01M4/88H01M16/00
CPCH01M4/86H01M4/88H01M8/16H01M16/00Y02B90/10Y02E60/50
Inventor 袁勇王逸周丽华宁寻安
Owner GUANGDONG UNIV OF TECH
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