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A cuo-cn peroxide composite catalyst for advanced oxidation technology and its preparation method and application

A technology of advanced oxidation technology and composite catalyst, which is applied in the field of CuO-CN peroxide composite catalyst of advanced oxidation technology and its preparation, can solve the problems of low effective utilization rate of oxidants, obstacles to wide application, narrow pH range, etc., and achieve good Prospect of industrial promotion and application, improvement of utilization rate, effect of easy operation

Active Publication Date: 2022-04-15
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the classic Fenton reaction has been widely used to degrade pollutants, problems such as its narrow pH range, iron sludge, and secondary pollution still exist, especially the low effective utilization of oxidants leads to high costs in practical applications. hinder its widespread application

Method used

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  • A cuo-cn peroxide composite catalyst for advanced oxidation technology and its preparation method and application
  • A cuo-cn peroxide composite catalyst for advanced oxidation technology and its preparation method and application
  • A cuo-cn peroxide composite catalyst for advanced oxidation technology and its preparation method and application

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preparation example Construction

[0037] The embodiment of the present invention provides a method of preparing a CuO-CN peroxide composite catalyst of advanced oxidation techniques, and the steps specifically include:

[0038] The organic copper source and dihydroids were mixed in 5-35 ° C, and the mass ratio of copper element and dihydroid in the organic copper source was (0.01-0.5): 1, After stirring in a water bath at 50-90 ° C, it was evaporated. The resulting material was ground to obtain a CuO-CN composite catalyst for advanced oxidation technology.

[0039]The resulting CuO-CN composite catalyst is a CuO and CN which are bonded to each other, the CuO is in contact with the interface between the two phases, and there is a chemical effect between the two-phase interfaces to account for the mass percentage of the composite catalyst. The content of copper elements is 1-70%.

[0040] The CuO-CN peroxide composite catalyst prepared by the above method is used in wastewater treatment, and contaminants in the wast...

Embodiment 1

[0043] This embodiment provides a method of preparing a CuO-CN peroxide composite catalyst for advanced oxidation techniques, and the steps specifically include:

[0044] The copper with copper, dihydroid in ethanol solvent was mixed at room temperature, and the mass ratio of copper element and dihydroid in copper of the acetate was 0.01: 1, i.e., the mass percentage of dihydroidia, After the copper is added, the water bath is stirred and stirred and evaporated. The resulting material was ground to obtain a CuO-CN composite catalyst for advanced oxidation technology.

[0045] Further, the present embodiment has also adjusted the amount of copper element to obtain a CuO-CN composite catalyst added to different copper, specifically, the mass ratio of copper elements in copper acetate and dihydroid is adjusted to 0: 1, 0.03: 1, 0.05: 1, 0.2: 1, 0.15: 1, 0.2: 1, ie, the amount of copper added is adjusted to 0%, 3%, 5%, 10% by the mass percentage of dihydroidia. 15%, 20%, other prepara...

Embodiment 2

[0049] In this example, 7 sets of CuO-Cn peroxide composite catalysts prepared in Example 1 were used to catalyze PMS degradation DS, compared to the effect, including:

[0050] The aqueous solution of 50 ml of 5 mg / L dichlorofenac is model contaminant, the catalyst concentration is 0.5 g / L, and the oxidant (PMS) concentration is 50 mg / L. Sampling 0.5 mL within a given time interval, the contaminant content was detected using a high performance liquid chromatograph to evaluate the catalyst of the composite catalyst.

[0051] 7 sets of CuO-CN composite catalysts catalyze PMS degradation DS effect figure 2 Indicated. From figure 2 It can be seen that the degradation performance of the CuO-CN composite catalyst obtained when the amount of copper is added is 10%.

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Abstract

The invention provides a kind of preparation method of the CuO-CN peroxide composite catalyst that is used for advanced oxidation technology, and the step comprises: organic copper source, dihydrodiamine are mixed in the organic solvent containing hydroxyl group, after solvent volatilization, with 1 Raise the temperature to 500-600°C for 2-5 hours at a heating rate of ‑10K / min, and grind after cooling to obtain a CuO‑CN composite catalyst for advanced oxidation technology. A CuO and CN composite catalyst combined by heterojunction was obtained. This heterostructure can effectively improve the principle defect of monomer catalysis, and achieve a very high oxidant utilization rate under the action of external energy such as no light. And the CuO‑CN composite catalyst has good catalytic performance, can degrade more than 90% of organic pollutants in 2 minutes, has good stability, has excellent pH applicability, and has strong adaptability in the actual wastewater treatment, and The preparation process of the invention is simple, and has good prospects for industrial popularization and application.

Description

Technical field [0001] The present invention belongs to the field of wastewater treatment, and in particular, the present invention relates to a CuO-CN peroxide composite catalyst for advanced oxidation techniques and a preparation method thereof. Background technique [0002] With the rapid development of my country's economy, more and more toxic organic pollutants are discharged into the water, and they have strong toxicological effects and ecological hazards due to their extremely low thresholds, which seriously threatens human health and environmental safety. In particular, toxic organic pollutants such as antibiotics in water are increasingly concerned, and the treatment of Diclofenac Sodium, DS is increasingly focused, and severe challenges are put forward on existing water treatment technology. [0003] Advanced Oxidation Technology (AOPS) has a significant advantage in the removal of toxic organic contaminants due to strong oxidation capacity, small selectivity, and high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J27/24C02F1/725C02F1/722C02F2101/34C02F2101/36C02F2101/38
Inventor 李东亚夏东升左诗语徐海明孙磊
Owner WUHAN TEXTILE UNIV
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