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Novel cerium dioxide as well as preparation method and application thereof

A ceria, a novel technology, applied to the novel ceria, a preparation method and its application in the treatment of tetracycline-type veterinary drug wastewater, can solve the problems of unsatisfactory tetracycline degradation efficiency and the like, and achieve a simple and easy-to-operate preparation method , The effect of high photocatalytic degradation efficiency and improved degradation ability

Pending Publication Date: 2021-12-17
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the commercial ceria sold on the market, its degradation efficiency is not satisfactory when it is used to degrade tetracycline. Therefore, we propose a new method for the preparation of ceria to solve the above problems

Method used

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  • Novel cerium dioxide as well as preparation method and application thereof
  • Novel cerium dioxide as well as preparation method and application thereof
  • Novel cerium dioxide as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A kind of preparation method of novel ceria, comprises the following steps:

[0032] S1 Dissolve cerium nitrate in water, then add magnesium powder, ultrasonic treatment for a period of time, and react to obtain cerium oxide precipitate;

[0033] S2 is centrifuged to separate the cerium oxide precipitate precipitate;

[0034] S3 is dried to obtain light yellow cerium dioxide powder.

[0035] figure 1 It is the XRD spectrum of the sample treated at high temperature. After comparing with the standard spectrum, it is found that figure 1 The middle spectrum and the standard spectrum of ceria Figure 1 Consistent, indicating that the obtained sample is ceria.

Embodiment 1

[0037] A kind of preparation method of novel ceria, comprises the following steps:

[0038] S1 Dissolve 4mmol of cerium nitrate in 60mL of water, add 4mmol of magnesium powder, and use 100W ultrasonic treatment for 6h to react to obtain cerium dioxide precipitate;

[0039] S2 is centrifuged to separate the cerium oxide precipitate precipitate;

[0040] S3 was dried and treated at 60° C. for 6 hours to obtain light yellow ceria powder.

experiment example 1

[0050] The photocatalytic tetracycline degradation performance of the ceria prepared in Example 1 and Comparative Examples 1-2 was observed.

[0051] 1 Experimental device and materials

[0052] The experimental materials used in this experiment include tetracycline hydrochloride and Co., all solutions in the experiment and the water phase in the analysis process are prepared with deionized water.

[0053] 2 Photocatalytic performance evaluation method

[0054] First carry out dark reaction for 30min, after the end, take the solution for centrifugation, measure the absorbance of the supernatant at 360nm wavelength with an ultraviolet spectrophotometer, and record it as A 0 . Under the irradiation of a 300W xenon lamp, the solution was taken every 30 minutes for centrifugation, and the absorbance of the supernatant was measured at a wavelength of 360nm by an ultraviolet spectrophotometer, which was recorded as Ai,

[0055] 3 Experimental methods

[0056] The light experim...

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Abstract

The invention discloses novel cerium dioxide as well as a preparation method and application thereof. In the preparation process, ultrasonic treatment is performed for a period of time to obtain cerium dioxide. The preparation method comprises the steps of S1, dissolving cerous nitrate in water, then adding magnesium powder, performing ultrasonic treatment for a period of time, and reacting to obtain a cerium dioxide precipitate; S2, carrying out centrifugal separation to obtain a cerium dioxide precipitate; and S3, drying to obtain faint yellow cerium dioxide powder. The preparation method is simple and easy to operate, large equipment is not used, and high-temperature treatment is not needed; and the prepared cerium dioxide has high photocatalytic degradation efficiency on tetracycline veterinary drug wastewater, and compared with commercial cerium dioxide, the degradation capacity of the cerium dioxide is improved by 3-5 times.

Description

technical field [0001] The invention relates to the technical field of cerium oxide preparation, in particular to a novel cerium oxide, a preparation method and its application in the treatment of tetracycline veterinary drug wastewater. Background technique [0002] In recent years, antibiotics have been detected in many parts of the world, and there are more and more types of antibiotics. The ecological risk of antibiotics has attracted widespread attention. Tetracycline (TC) is a typical antibiotic, because it can treat bacterial diseases , is widely used in medicines and feed additives, and ranks second in the production and use of antibiotics. However, only a very small part of tetracycline will be absorbed and metabolized by humans or animals, and the rest will exist in the environment as excrement or itself, posing a serious threat to the ecosystem. Therefore, it is urgent to remove excess tetracycline and protect the environment. Studies have shown that semiconducto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/235C01F17/10C02F1/30C02F101/34C02F101/36C02F101/38
CPCC01F17/235C01F17/00C02F1/30C02F2305/10C02F2101/38C02F2101/34C02F2101/36
Inventor 赵朴素张莉莉朱凤霞殷竟洲宋洁阚卫秋孙小军安礼涛
Owner HUAIYIN TEACHERS COLLEGE
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