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Cell catalyzed by titanium dioxide, preparation method of cell and application

A battery and photocatalytic technology, applied in chemical instruments and methods, battery electrodes, circuits, etc., can solve the problems of long microbial reaction startup time, low electron transfer efficiency, harsh operating conditions, etc., to achieve easy control, extended response, and operation. handy effect

Inactive Publication Date: 2012-12-12
SHANGHAI QIBAO HIGH SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of low electron transfer efficiency in microbial fuel cells is the bottleneck that microbial fuel cells need to break through in the future
In addition, the operation of microbial wastewater fuel cells is complicated, and the anode and cathode anoxic and oxygen consumption processes need to be controlled separately, and there are also shortcomings such as long microbial reaction start-up time and harsh operating conditions.

Method used

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  • Cell catalyzed by titanium dioxide, preparation method of cell and application
  • Cell catalyzed by titanium dioxide, preparation method of cell and application
  • Cell catalyzed by titanium dioxide, preparation method of cell and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 Preparation of nanometer TiO2 film and its photocatalytic treatment of organic wastewater

[0050] The preparation method reference of this laboratory (Dong Mei, Feng Shujing etc., chemical engineer, 2006, (11) 46-47), preparation method is as follows:

[0051] Dissolve 1g of ethyl cellulose in 7g of terpineol, then add industrial commodity P25 nanometer TiO 2 Powder 2g, and add a small amount of ethanol, grind the mixture in an agate mortar for half an hour until uniform, to obtain nano-TiO2 film paste.

[0052] nano-TiO by screen printing 2 The paste is printed onto the conductive glass. The printed TiO 2 The film was dried at room temperature for about 30 minutes, then placed in a muffle furnace for sintering at 520°C for 2 hours, the heating rate was 10°C / min, and it was taken out when the temperature dropped to room temperature.

[0053] attached figure 1 The nano-TiO prepared by the present invention and the Advanced Materials Laboratory of Fudan Un...

Embodiment 2

[0058] Embodiment 2: the preparation of nano-TiO2 photocatalytic waste water organic matter battery

[0059] as attached figure 2 As shown, the nano-TiO2 film printed on the conductive glass is used as the anode, the platinum black electrode is used as the cathode, the wastewater organic matter (such as acetic acid) containing the electrolyte is placed in the reaction tank, and the light source is turned on to irradiate the nano-TiO2 film, which constitutes a photocatalytic Wastewater Organics Battery.

[0060] When ultraviolet light irradiates the nano-TiO2 catalyst on the surface of the thin film electrode (anode), the electrons in the valence band of the nano-TiO2 are excited, jump to the conduction band, and generate corresponding holes in the valence band. The generated holes and the hydroxyl radicals (OH) indirectly transformed have a strong oxidation effect, and can quickly oxidize the acetic acid molecules adsorbed on the surface of nano-TiO2 to generate CO2 and H +...

Embodiment 3

[0063] Example 3 Nano-TiO2 Performance test of photocatalyzed waste water organic matter battery

[0064] The invention adopts a single-cell battery, and uses an electrochemical workstation to characterize the performance of the battery.

[0065] Using simulated wastewater 0.1mol / L acetic acid (containing 0.1mol / L Na2SO4 electrolyte) as organic substrate, nano-TiO2 photocatalytic anode and platinum black cathode constitute photocatalytic wastewater organic battery, and the battery polarization curve measured by electrochemical workstation and power density curves (see attached Figure 4 ). The polarization curve of a battery shows the relationship between voltage and current during discharge. It can be seen from the polarization curve that the open circuit voltage (V oc ) reaches 1.45V, the short-circuit current (J SC ) is 4.358A / m 2 . It can be seen from the power density curve that the maximum output power density of the battery (P max )4.66W / m 2 .

[0066] The fill...

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Abstract

The invention discloses a power generation unit and particularly relates to a wastewater organic cell catalyzed by titanium dioxide films. A layer of nano-level titanium dioxide films is coated on conductive glass to serve as an anode, the anode and a cathode form the cell, and the cell can process organic substances in wastewater, recycle biological energy sources and convert biological energy sources to power generation. The cell has good energy conversion efficiency, the performance of the cell is better than that of an existing microorganism wastewater cell, and the current performance is increased by about 102-103 times. Besides, the cell has the advantages of being simple in structure, convenient to operate, easy to control and wide in application.

Description

technical field [0001] The invention relates to a power generation device, in particular to a waste water organic matter battery catalyzed by a titanium dioxide (TiO2) film. Background technique [0002] In recent years, with the rapid increase of population and the rapid development of industry, a large amount of toxic and harmful organic wastewater has entered the water environment. According to the statistical results published in the 2009 "China Environmental Status Bulletin", in 2009, China discharged 58.92 billion tons of various types of wastewater into the environment throughout the year, of which 12.775 million tons of organic pollutants were measured in terms of chemical oxygen demand. A large amount of waste water is discharged into the environment, which not only causes serious environmental pollution, but also causes ecological damage. The organic matter in wastewater is still an important energy source. According to the statistics of the Japan Energy Associati...

Claims

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Application Information

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IPC IPC(8): H01M14/00H01M4/00C02F1/461
CPCY02W10/37
Inventor 裴明周南
Owner SHANGHAI QIBAO HIGH SCHOOL
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