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Self-sustaining photocatalytic conversion of pollutants and co 2 Synergistic reaction cell and preparation method thereof

A technology of synergistic reaction and pollutants, applied in the direction of ion exchange water/sewage treatment, sterilization/microdynamic water/sewage treatment, energy wastewater treatment, etc., can solve the problems of high operating cost, imperfection, consumption of additional energy, etc. Achieve the effects of large environmental pollution, eliminate environmental impact, and promote transformation and power generation

Inactive Publication Date: 2016-11-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current photocatalytic conversion of CO 2 The report on the coupling technology with photocatalytic degradation of organic pollutants is very incomplete, and an external bias voltage is still required to promote the reaction, which consumes external energy. There is no self-sustaining continuous working technology that only relies on solar energy to combine the reaction process and characteristics of the two, and the operating cost high

Method used

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  • Self-sustaining photocatalytic conversion of pollutants and co <sub>2</sub> Synergistic reaction cell and preparation method thereof
  • Self-sustaining photocatalytic conversion of pollutants and co <sub>2</sub> Synergistic reaction cell and preparation method thereof
  • Self-sustaining photocatalytic conversion of pollutants and co <sub>2</sub> Synergistic reaction cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Use TiO with a diameter of 10-30 nm and a length of 20-30 µm 2 The nano-array tube is a photoelectrocatalytic material and acts as an anode. Put it obliquely into a phenol solution with a concentration of 0.1-5 mol / L to form an anode chamber. The inclination angle between the array tube and the horizontal plane is 50-60°. Add NaOH to the anode chamber Adjust the pH value of the solution, use Nafion117 cation exchange membrane as the diaphragm, and add saturated Na to the cathode chamber 2 CO 3 solution, the copper mesh as the cathode, and the anode as TiO 2 The distance between the array tube and the cathode copper grid is less than 30 cm, and the CO 2 Close to the cathode through the gas distribution plate, add a certain amount of 500 ~ 3000 m 2 / g of porous carbon enhanced CO 2 Absorption and dissolution, the transfer process is enhanced by stirring in the two chambers, and the anode TiO 2 The array tube is connected to the cathode copper grid to form an external...

Embodiment 2

[0026] MoS with a particle size of 5–20 nm was impregnated 2 The powder is carried on the porous molecular sieve Ti—MCM-41, put into a titanium basket with quartz glass on one side as photocatalyst and anode, and put it obliquely into the printing and dyeing waste liquid to form the anode chamber, the quartz glass surface of the titanium basket and the The inclination angle of the horizontal plane is 10-60°. Add CaO to the anode chamber to adjust the pH value of the solution to be greater than 9. Anion exchange membranes are used as the diaphragm. Seawater is added to the cathode chamber, and graphite felt doped with Fe-doped nano-GaP is used as the cathode. 2 into the bottom of the cathode chamber, add 1000 ~ 2000 m 2 / g of porous carbon enhanced CO 2 The anode titanium basket and the cathode graphite felt are connected by wires to form an external circuit, the distance between the anode and the cathode is less than 50 cm, the load is a small fan, and a curved arc-shaped baf...

Embodiment 3

[0028] to the above Example 2 Simultaneously apply 100 ~ 200 W simulated sunlight to accelerate CO in the cathode chamber 2 conversion, such as image 3 Shown, add appropriate amount of NH to the cathode chamber 3 ·H 2 O consumes the photogenerated holes generated in the chamber, reduces the recombination of photogenerated holes and electrons, and strengthens the CO 2 For the electron reception of the electrode, the printing and dyeing waste liquid in the anode chamber is replaced with electroplating wastewater, and the other things remain unchanged. After adjusting the composition, concentration and pH value of the solutions on both sides, the composition of the cathode chamber product can be changed, which is formed by methane, CO, methanol, and formaldehyde.

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Abstract

The present invention involves a self -maintained light -catalyzed transformation of pollutants and the coordinated reaction pool and its preparation methods. It uses solar energy to deal with waste to coordinate CO2 power generation and prepare high -value chemical products, which belongs to environmental protection and new energy and related fields.The technical problem to be solved by the present invention is to use solar energy to transform CO2 and pollutants to improve the social and economic benefits of pollutants.The technical scheme of the present invention uses the anode oxidation and degradation pollutants in the anode. At the same time, the electrons generated by the oxidation process are used in the cathode chamber to promote CO2 transformation.The chemical potential difference between the two rooms makes the potential difference to make up for the lack of optical voltage, meet the energy requirements of the operation of the collaborative reaction tank, and achieve continuous operation of self -maintenance.The anode optical catalytic reaction efficiency, simple structure, and strong operability of the invention of the present invention are suitable for the occasion of long -term light coupling to treat pollutants and CO2.

Description

technical field [0001] The invention discloses a novel self-sustaining photocatalytic conversion of pollutants and CO 2 The synergistic reaction pool and its preparation method utilize clean solar energy alone to dispose of waste and synergistically generate electricity and produce high-value-added chemical products without additional energy, and belong to the fields of environmental protection, new energy and related fields. Background technique [0002] Greenhouse gas CO 2 The organic pollutants in sewage and sewage seriously threaten the survival and reproduction of human beings and the sustainable development of social economy, and even cause extreme climate phenomena, which has attracted great attention from all countries in the world. Many industrial processes (such as: printing and dyeing, photography, pesticides, explosives, disinfectants, lubricants, petrochemicals, rubber, plastics, etc.) will produce a large amount of waste liquid containing phenols, and toxic co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/467C02F1/42
CPCY02W10/37
Inventor 王贵欣闫康平钟宜霏薛娱静
Owner SICHUAN UNIV
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