Anode material applied to photoelectric degradation of tetracycline and preparation method of anode material

A technology of anode material and photoelectric degradation, applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as increased maintenance costs, potential safety hazards, reduced sludge activity, etc., to reduce compounding The effect of reducing the speed, reducing the difficulty of the processing process, and reducing the burden

Active Publication Date: 2022-02-15
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Antibiotic substances such as tetracycline can directly poison microorganisms, resulting in a significant reduction in sludge activity and an increase in maintenance costs
Secondly, the Fenton method will produce a large amount of iron-containing sludge, which will bring a certain burden to the subsequent treatment process and the structure of the next unit; in addition, for some refractory substances, the concentration of the effluent and after treatment cannot meet the discharge standard
Finally, some advanced oxidation methods also require harsh conditions such as high temperature and high pressure, high oxidation voltage, etc., which significantly increase the degradation cost and environmental burden, and there are certain safety hazards, which are not conducive to the large-scale application of such advanced oxidation methods in the field of tetracycline degradation. to promote

Method used

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  • Anode material applied to photoelectric degradation of tetracycline and preparation method of anode material
  • Anode material applied to photoelectric degradation of tetracycline and preparation method of anode material
  • Anode material applied to photoelectric degradation of tetracycline and preparation method of anode material

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preparation example Construction

[0031] Co:α-Fe 2 o 3 Various parameters in the preparation process of the anode material, wherein cobalt chloride hexahydrate (CoCl 2 ·6H 2 O) is added in a concentration range of 1 to 50mmol / L; the Co:α-Fe synthesized within this doping range 2 o 3 The anode material has a more beneficial degradation efficiency for tetracycline; in addition, the Co:α-Fe prepared by this method 2 o 3 In the actual degradation process, anode materials have high reuse rate and good degradation stability, and have broad development and application prospects.

[0032] Among them, Co:α-Fe 2 o 3 The anode material is to place the cleaned FTO in the mixed solution, and the precursor is prepared by the hydrothermal method; then the precursor is annealed in the muffle furnace, and finally Co:α-Fe is obtained 2 o 3 anode material.

[0033] The role of each component: FTO is to provide growth sites for electrode materials. It can save the filtering operation when testing after tetracycline is d...

Embodiment 1

[0041] Co involved in the embodiments of the present invention: α-Fe 2 o 3 The synthesis steps are as follows: intercept 4×2.2 cm of fluorine-doped SnO 2 Conductive glass (FTO), ultrasonically clean the intercepted FTO with acetone, ethanol, and deionized water successively (the ultrasonic cleaning time of acetone, ethanol, and deionized water is all 20 minutes); dry and set aside.

[0042] Weigh 17g of sodium nitrate (NaNO 3 ), 5.406g of ferric chloride hexahydrate (FeCl 3 ·6H 2 O), 0.380g of cobalt chloride hexahydrate (CoCl 2 ·6H 2 (0) Add 200mL of deionized water after stirring and dissolving to obtain mixed solution A (containing 1mol / L NaNO in mixed solution A 3 , 0.10mol / L FeCl 3 ·6H 2 O and 0.008mol / L CoCl 2 ·6H 2 O).

[0043] Place the dried FTO in a 25mL polytetrafluoroethylene liner (note that the conductive side is placed downwards), and add an appropriate amount of mixed solution A until it just submerges the entire FTO. Put the Teflon-lined lid tightl...

Embodiment 2

[0047] 1mM Co involved in the present invention: α-Fe 2 o 3 , 5mM Co:α-Fe 2 o 3 , 10mM Co:α-Fe 2 o 3 , 50mM Co:α-Fe 2 o 3 , and α-Fe 2 o 3 All were prepared according to the steps of Example 1. where α-Fe 2 o 3 The difference of the synthetic preparation is that no CoCl is added 2 ·6H 2 O.

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Abstract

The invention relates to the field of materials for degrading tetracycline substances, and in particular, relates to an anode material applied to photoelectric degradation of tetracycline, wherein the anode material comprises ferric chloride hexahydrate, sodium nitrate, a cobalt chloride hexahydrate mixed solution and fluorine-doped SnO2 electrically conductive glass. The invention provides the anode material applied to the photoelectric degradation of tetracycline, the Co:alpha-Fe2O3 anode material is prepared in a Co doping mode, and the recombination rate of an electron-hole pair of alpha-Fe2O3 is effectively reduced. Under the condition of illumination, the Co:alpha-Fe2O3 anode material can degrade tetracycline hydrochloride at a relatively low voltage, so that the degradation cost is reduced, and the safety of the degradation process is improved. Besides, the Co:alpha-Fe2O3 anode material grows on the FTO, and after the degradation process is completed, the Co:alpha-Fe2O3 anode material can be recycled without filtering operation, so that the difficulty of the subsequent treatment process is reduced, and the burden of the material on the structure of the next unit is reduced.

Description

technical field [0001] The invention relates to the field of materials for degrading tetracyclines, in particular to an anode material for photoelectric degradation of tetracyclines and a preparation method thereof. Background technique [0002] In today's sewage treatment process, due to the limitation of economic cost, most sewage plants use activated sludge method to degrade organic wastewater. The method mainly utilizes the adsorption of sludge and the metabolism of microorganisms in the sludge. Antibiotic substances such as tetracycline can directly poison microorganisms, resulting in a significant reduction in sludge activity and an increase in maintenance costs. In addition, the tetracycline molecule contains a benzene ring and has a relatively stable chemical structure, so the current activated sludge method is not ideal for the degradation of tetracycline in sewage. [0003] Advanced oxidation technologies mainly include photochemical oxidation, catalytic wet oxid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F1/30C02F1/72C02F101/30
CPCC02F1/46109C02F1/4672C02F1/30C02F1/725C02F2001/46142C02F2101/30C02F2305/10Y02W10/37
Inventor 程发良邹应亨谢世磊杨小曼赵鹏黄鹏张敏柳鹏
Owner DONGGUAN UNIV OF TECH
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