A kind of pd/cds/toc photocatalyst and its preparation method and application

A technology of photocatalyst and detergent, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of insufficient utilization of visible light and low degradation efficiency, and achieve separation and transmission, adaptability The effect of wide environment and increased utilization

Active Publication Date: 2021-11-09
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to provide a CdS / TOC photocatalyst and its preparation method and application, to overcome the problems and defects of low degradation efficiency and insufficient utilization of visible light in the prior art, and to 2,4-dichloro Phenol has strong photocatalytic properties
[0006] The second object of the present invention is to provide a Pd / CdS / TOC photocatalyst and its preparation method and application, to overcome the problems and defects of low degradation efficiency and insufficient utilization of visible light in the prior art, and to 2,4- Dichlorophenol has strong photocatalytic properties

Method used

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  • A kind of pd/cds/toc photocatalyst and its preparation method and application
  • A kind of pd/cds/toc photocatalyst and its preparation method and application
  • A kind of pd/cds/toc photocatalyst and its preparation method and application

Examples

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Embodiment 1

[0038] (1) Preparation of titanyl cluster TOC: Add 20mL of ethylene glycol to 1.0724g of pivalic acid, add 1.7mL of tetrabutyl titanate and keep stirring at 100°C for 24h. After centrifugation, wash with tetrahydrofuran three times and dry for 12h. , get TOC.

[0039] (2) Preparation of CdS / TOC complex: Take 0.05g TOC prepared above and add 10~15mL water, add CdS into TOC solution, and ultrasonic treatment for 5h, centrifuge washing and drying, and finally obtain multi-dimensional CdS / TOC photocatalyst; The mass of CdS added is 0.5% of the mass of TOC.

[0040] Take 0.02 g of the photocatalyst prepared in this example and add it to 30 mL of 15 mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; put it into a photoprotective box, and use an optical filter to obtain In the visible light part of the xenon lamp, air was introduced into the sample to conduct photocatalytic experiments; every 20 minutes, 3 ml of samples were extracted ...

Embodiment 2

[0043] (1) Preparation of titanyl cluster TOC: Add 20mL of ethylene glycol to 1.0724g of pivalic acid, add 1.7mL of tetrabutyl titanate and keep stirring at 100°C for 24h. After centrifugation, wash with tetrahydrofuran three times and dry for 12h. , get TOC.

[0044] (2) Preparation of CdS / TOC composite: Take 0.05gTOC prepared above and add 10~15mL water, add CdS into TOC solution, and ultrasonic treatment for 6h, centrifuge washing and drying, and finally obtain multi-dimensional CdS / TOC photocatalyst; The mass of CdS added is 3% of the mass of TOC.

[0045] Take 0.02 g of the photocatalyst prepared in this example and add it to 30 mL of 15 mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; put it into a photoprotective box, and use an optical filter to obtain In the visible part of the xenon lamp, air is introduced into the sample for photocatalytic experiments; such as figure 1 As indicated, every 20 min, 3 ml samples were ...

Embodiment 3

[0048] (1) Preparation of titanyl cluster TOC: Add 20mL of ethylene glycol to 1.0724g of pivalic acid, add 1.7mL of tetrabutyl titanate and keep stirring at 100°C for 24h. After centrifugation, wash with tetrahydrofuran three times and dry for 12h. , get TOC.

[0049] (2) Preparation of CdS / TOC complex: Take 0.05g TOC prepared above and add 10~15mL water, add CdS into TOC solution, and ultrasonic treatment for 5h, centrifuge washing and drying, and finally obtain multi-dimensional CdS / TOC photocatalyst; The mass of CdS added is 5% of the mass of TOC.

[0050] Take 0.02 g of the photocatalyst prepared in this example and add it to 30 mL of 15 mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; put it into a photoprotective box, and use an optical filter to obtain In the visible part of the xenon lamp, air is introduced into the sample for photocatalytic experiments; such as figure 1 As indicated, every 20 min, 3 ml samples were t...

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PUM

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Abstract

The Pd / CdS / TOC photocatalyst and its preparation method and application disclosed in the present invention use TOC as a loading object, and CdS is loaded on TOC to prepare a CdS / TOC photocatalyst. On the basis of the CdS / TOC photocatalyst, further Pd was loaded to obtain Pd / CdS / TOC photocatalyst. The photocatalysts prepared by the present invention are all green and environment-friendly materials, will not produce new pollution after degradation, have high degradation efficiency, can adapt to a wide range of environments, can be applied to wastewater treatment, have high efficiency in degrading 2,4-dichlorophenol, and are useful for popularization and application. Great advantage.

Description

technical field [0001] The invention belongs to the field of photocatalysts, and in particular relates to a Pd / CdS / TOC photocatalyst and a preparation method and application thereof. Background technique [0002] 2,4-Dichlorophenol is widely used in the production of pesticides 2,4-D and 2,4,5-T. At the same time, 2,4-dichlorophenol is still an important chemical product. In recent years, it is used as a solvent, pesticide and pharmaceutical intermediate. With the increase of production and usage, the amount of 2,4-dichlorophenol entering the environment also increases accordingly, and the pollution hazard of 2,4-dichlorophenol in the environment is becoming more and more serious. However, 2,4-dichlorophenol has the characteristics of high toxicity, persistence, fluidity and accumulation, which seriously affects our living environment. It is toxic to water fleas, zebrafish, salmon, rabbits, rats and humans, and will interfere with the endocrine system of organisms, causing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/04B01J27/045B01J35/00B01J37/34C02F1/30C02F101/36C02F101/34
Inventor 李宇亮危娟秦昉娜菲莎·吐尔洪段明昊周鲁平
Owner CHANGAN UNIV
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