Photothermal biological anode, preparation method thereof and application of photothermal biological anode

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

Active Publication Date: 2018-09-21
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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  • Photothermal biological anode, preparation method thereof and application of photothermal biological anode
  • Photothermal biological anode, preparation method thereof and application of photothermal biological anode
  • Photothermal biological anode, preparation method thereof and application of photothermal biological anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment prepares a photothermal bioanode, and its specific preparation process includes the following steps:

[0035] 1. Take a 200-mesh sieve and 0.5g of Ti 3 AlC 2 Put it in a 50mL polytetrafluoroethylene beaker, add 10mL of HF solution with a concentration of 48% by mass, 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 was washed alternately and repeatedly with deionized water and absolute ethanol until the washing solution was neutral, then placed in a vacuum drying oven at 80°C for drying 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 from perfluorosulfonic acid t...

Embodiment 2

[0039] Embodiment 2 Photothermal conversion performance test

[0040] 1. Grouping

[0041] Take ordinary carbon felt as the reference;

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

[0043] 2. Sunlight

[0044] The reference substance and sample were exposed to sunlight for irradiation, and the sunlight power density was measured by an optical power density meter (TES-1333) to be 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, and when the surface temperature is constant, take an infrared thermal imaging photograph, and the results are as follows 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 good light absorption ability and photothermal conversion effect, and has a wide absorption spectrum, and the absorption light band range ca...

Embodiment 3

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

[0047] 1. A three-electrode electrochemical system device was constructed according to the traditional method, and the ambient temperature in the reaction vessel was controlled by an external circulating water system. The ordinary carbon felt and the photothermal biological anode prepared in Example 1 were used as anodes respectively, and they were divided 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 4 cm × 4 cm with a thickness of 0.5 cm. Titanium wire was used as the auxiliary electrode and saturated calomel electrode was used as the reference electrode to construct a three-electrode system microbial electrochemical system.

[0049] 2. Use anaerobic mixed bacterial seed solution and sodium acetate culture solution, place it in a 30°C constant temperature incubator for cultivation, and conne...

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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 particularly 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. It has become a research hotspot in the field of electrochemical catalysis. However, the low temperature environment is not conducive to the growth of microorganisms, and the microbial electrochemical system is difficult to start 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, attempts have been made to heat and heat the entire wastewater inflow sy...

Claims

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Application Information

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Patent Type & Authority Applications(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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