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Preparation method of copper oxide catalyst for catalyzing persulfate to degrade pollutants in water

A technology of persulfate and copper oxide, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Low-level problems, achieve the effects of less dosage, improved removal efficiency, and high catalytic activity

Active Publication Date: 2021-06-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low catalytic efficiency and large dosage of metal oxides, and to provide a method for preparing a copper oxide catalyst for catalyzing persulfate to degrade pollutants in water

Method used

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  • Preparation method of copper oxide catalyst for catalyzing persulfate to degrade pollutants in water
  • Preparation method of copper oxide catalyst for catalyzing persulfate to degrade pollutants in water
  • Preparation method of copper oxide catalyst for catalyzing persulfate to degrade pollutants in water

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specific Embodiment approach 1

[0026] Specific embodiment one: the preparation method of the copper oxide catalyst used to catalyze persulfate to degrade pollutants in water in this embodiment is carried out according to the following steps:

[0027] 1. Adding Cu(NO 3 ) 2 ·6H 2 O and organic carbon sources were dissolved in ultrapure water, and stirred evenly at room temperature to obtain a mixed solution; wherein Cu(NO 3 ) 2 ·6H 2 The molar ratio of O and organic carbon source is (1-100): (1-100);

[0028] 2. Place the mixed solution in an oven and dry to obtain a precipitate;

[0029] 3. Calcining the precipitate at high temperature, grinding and sieving the precipitate after cooling to obtain a copper oxide catalyst; wherein the temperature for high-temperature calcination is 300° C. to 1000° C., and the calcination time is 1-4 hours.

[0030] In this embodiment, part of the divalent copper atoms are reduced to monovalent copper atoms during the preparation process, and the structure of the copper ...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is: Cu(NO 3 ) 2 ·6H 2 The molar ratio of O to organic carbon source was 8:1. Others are the same as the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the organic carbon source is citric acid or glucose. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a copper oxide catalyst for catalyzing persulfate to degrade pollutants in water, relates to a preparation method of a copper oxide catalyst for catalyzing persulfate to degrade pollutants in water, and aims to solve the problems of low catalytic efficiency and large dosage of metal oxide. In the preparation process, part of bivalent copper atoms are reduced into monovalent copper atoms, and the structure of a copper oxide crystal is kept, so that Cu (I) and Cu (II) sites exposed on the surface of the material efficiently activate persulfate to generate active oxidizing substances, and the purpose of removing pollutants in water through oxidation is achieved. Compared with other metal oxide catalysts, the prepared catalyst material is high in catalytic activity and small in dosage. The method is applied to the technical field of water treatment.

Description

technical field [0001] The invention relates to a preparation method of a copper oxide catalyst used for catalyzing persulfate to degrade pollutants in water. Background technique [0002] In recent years, with the improvement of people's water safety awareness and the development of detection technology, the existence of micro-pollutants in water has attracted people's attention. The existence of micro-pollutants in water usually brings unknown risks to human health. Conventional sewage treatment process units have certain limitations in the treatment efficiency of pollutants, and it is difficult to completely remove them from water. These pollutants are discharged into natural water bodies along with the effluent of the sewage treatment plant, and may enter the drinking water of users again after passing through the urban water supply system. Therefore, it is of great significance to develop efficient and new treatment technologies to effectively remove pollutants in wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C02F1/72
CPCB01J23/72C02F1/725Y02W10/37
Inventor 陈忠林闫鹏魏王舒煜沈吉敏王斌远康晶
Owner HARBIN INST OF TECH
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