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CdS/TOC photocatalyst, Pd/CdS/TOC photocatalyst and preparation method and application thereof

A photocatalyst and high-quality technology, which is 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, and adapt to the environment Wide and good application prospects

Active Publication Date: 2019-06-28
CHANGAN UNIV
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  • Summary
  • 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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  • CdS/TOC photocatalyst, Pd/CdS/TOC photocatalyst and preparation method and application thereof
  • CdS/TOC photocatalyst, Pd/CdS/TOC photocatalyst and preparation method and application thereof
  • CdS/TOC photocatalyst, Pd/CdS/TOC photocatalyst and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

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

[0039] (2) Preparation of CdS / TOC complex: Take 0.05g of TOC prepared above and add 10-15mL of water, add CdS into the TOC solution, and ultrasonically treat for 5h, centrifuge, wash and dry, and finally obtain a 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 and ...

Embodiment 2

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

[0044] (2) Preparation of CdS / TOC complex: Take 0.05g of TOC prepared above and add 10-15mL of water, add CdS into the TOC solution, and ultrasonically treat for 6h, centrifuge, wash and dry, and finally obtain a 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 taken...

Embodiment 3

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

[0049] (2) Preparation of CdS / TOC complex: Take 0.05g of TOC prepared above and add 10-15mL of water, add CdS into the TOC solution, and ultrasonically treat for 5h, centrifuge, wash and dry, and finally obtain a 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 taken...

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Abstract

The invention discloses a CdS / TOC photocatalyst, a Pd / CdS / TOC photocatalyst and a preparation method and application thereof. The preparation method comprises the following steps of: loading CdS on TOC by using TOC as a loader to prepare the CdS / TOC photocatalyst; and further loading Pd on the basis of the CdS / TOC photocatalyst to obtain the Pd / CdS / TOC photocatalyst. The photocatalysts prepared bythe method are environment-friendly materials without new pollution after being degraded, and with high degradation efficiency and wide adaptability to the environment; and the prepared photocatalysts can be applied to wastewater treatment, and have high efficiency in degrading 2, 4-dichlorophenol and great advantages in application and popularization.

Description

technical field [0001] The invention belongs to the field of photocatalysts, and in particular relates to a CdS / TOC photocatalyst, 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 sys...

Claims

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Application Information

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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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