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

A photocatalyst and tetrabutyl titanate technology, applied in physical/chemical process catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of low degradation efficiency and insufficient utilization of visible light, etc. Achieve the effect of high degradation efficiency, good application prospect and good photoelectrochemical performance

Active Publication Date: 2021-11-16
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 Pd / TOC photocatalyst and its preparation method and application, overcome the problems and defects of low degradation efficiency in the prior art, and have stronger photocatalyst to 2,4-dichlorophenol Catalytic performance
[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 Pd / TOC photocatalyst: Add 0.05g TOC prepared in step (1) into 15mL of water, add palladium dichloride and stir for 10min, then irradiate with ultraviolet light for 30min, and finally get the following Figure 5 The Pd / TOC photocatalyst shown; wherein the mass of palladium element is 0.5% of the mass of TOC.

[0040] Take 0.02g of the photocatalyst prepared in this example and add it to 30mL of 15mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; Obtain the visible light part of the xenon lamp, pass air into the sample, and conduct photocatalytic experiments; such as figure 1 As indicated, every 20 min, 3 ml samples were taken for product analysi...

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, wash with ethanol three times after centrifugation, and dry for 12 h , get TOC.

[0044] (2) Preparation of Pd / TOC photocatalyst: Take 0.05g TOC prepared in step (1) and add it to 15mL water, add palladium nitrate, then perform ultrasonic treatment for 10min, stir for 10min, and then irradiate with ultraviolet light for 30min, and finally get the following: Figure 5 The Pd / TOC photocatalyst shown; wherein the mass of palladium element is 1.5% of the mass of TOC.

[0045] Take 0.02g of the photocatalyst prepared in this example and add it to 30mL of 15mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; Obtain the visible light part of the xenon lamp, pass air into the sample, and conduct photocatalytic experiments; such as figure 1 As indicated, every...

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 Pd / TOC photocatalyst: Take 0.05g TOC prepared in step (1) and add it into 10mL water, add palladium dichloride and stir for 5min, then irradiate with ultraviolet light for 10min, and finally get the following Figure 5 The Pd / TOC photocatalyst shown; wherein the mass of palladium element is 1% of the mass of TOC.

[0050] Take 0.02g of the photocatalyst prepared in this example and add it to 30mL of 15mg / L 2,4-dichlorophenol solution, stir in the dark for 30 minutes to reach adsorption equilibrium; Obtain the visible light part of the xenon lamp, pass air into the sample, and conduct photocatalytic experiments; such as figure 1 As indicated, every 20 min, 3 ml samples were taken for product a...

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Abstract

A Pd / CdS / TOC photocatalyst disclosed by the present invention and its preparation method and application. TOC is used as a loading object, and Pd is loaded on TOC to prepare a Pd / TOC photocatalyst. On the basis of Pd / TOC photocatalyst, CdS was further loaded to obtain Pd / CdS / TOC photocatalyst. The various photocatalysts prepared by the invention are all green and environment-friendly materials, no new pollution will be generated after degradation, the degradation efficiency is high, the environment is wide adaptable, it can be applied to wastewater treatment, the degradation efficiency of 2,4-dichlorophenol is high, and it can be popularized The application has great advantages.

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): B01J27/045C02F1/30C02F101/34
Inventor 李宇亮段明昊秦昉徐晓彤周鲁平
Owner CHANGAN UNIV
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