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TiO2-carbon fiber composite photocatalyst used for high salinity wastewater organic pollutant treatment and preparation thereof

A technology of organic pollutants and carbon fibers, which is used in physical/chemical process catalysts, catalyst activation/preparation, water pollutants, etc. Adsorption capacity, the effect of promoting adsorption

Inactive Publication Date: 2017-08-04
HANGZHOU JIUHE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Second, most of the light sources currently used in photocatalytic research are strong light sources with hundreds of watts. This light source is not only expensive, but also requires a cooling device, which hinders the further application of heterogeneous photocatalytic technology in the field of practical treatment.

Method used

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  • TiO2-carbon fiber composite photocatalyst used for high salinity wastewater organic pollutant treatment and preparation thereof
  • TiO2-carbon fiber composite photocatalyst used for high salinity wastewater organic pollutant treatment and preparation thereof
  • TiO2-carbon fiber composite photocatalyst used for high salinity wastewater organic pollutant treatment and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Catalyst preparation

[0052] Take 1.5g of carbon fiber and 200mL of absolute ethanol in a flask, stir and adsorb in a 30°C water bath. Add it to a round bottom flask, and stir in a constant temperature water bath until a uniformly dispersed suspension system is formed and ultrasonically dispersed. Slowly add 5.000g of tetrabutyl titanate into the carbon fiber / absolute ethanol suspension system dropwise. After the dropwise addition, under the action of stirring (300 rpm), raise the temperature of the water bath to 80°C, and slowly add 60mL of deionized Water, with a dropping rate of 3 mL / min, stirred (300 rpm) at 80°C for 5 hours. After the reaction is completed, filter, wash and dry to obtain a powder sample, which is TiO 2 -Carbon fiber composite material.

[0053] 2gTiO 2 - Carbon fiber composite material and 200mL deionized water are added to a high-pressure reactor lined with polytetrafluoroethylene, sealed and placed in a blast drying oven for heat treatme...

Embodiment 2

[0064] (1) Catalyst preparation

[0065] Take 1.5g of carbon fiber and 200mL of absolute ethanol in a flask, stir and adsorb in a 30°C water bath. Add it to a round bottom flask, and stir in a constant temperature water bath until a uniformly dispersed suspension system is formed and ultrasonically dispersed. Slowly add 10.000g of tetrabutyl titanate into the carbon fiber / absolute ethanol suspension system dropwise. After the dropwise addition, under stirring, raise the temperature of the water bath to 80°C, and slowly add 60mL of deionized water at a rate of 3 mL / min, the reaction was stirred at 80°C for 5 hours. After the reaction is completed, filter, wash and dry to obtain a powder sample, which is TiO 2 -Carbon fiber composite material.

[0066] 2g TiO 2 - Carbon fiber composite material and 200mL deionized water are added to a high-pressure reactor lined with polytetrafluoroethylene, sealed and placed in a blast drying oven for heat treatment at 170°C for 12 hours. ...

Embodiment 3

[0077] (1) Catalyst preparation

[0078] Take 1.5g of carbon fiber and 200mL of absolute ethanol in a flask, stir and adsorb in a 30°C water bath. Add it to a round bottom flask, and stir in a constant temperature water bath until a uniformly dispersed suspension system is formed and ultrasonically dispersed. Slowly add 15.000g of tetrabutyl titanate to the carbon fiber / absolute ethanol suspension system dropwise. After the dropwise addition, under stirring, raise the temperature of the water bath to 80°C, and slowly add 60mL of deionized water at a rate of 3 mL / min, the reaction was stirred at 80°C for 5 hours. After the reaction is completed, filter, wash and dry to obtain a powder sample, which is TiO 2 -Carbon fiber composite material.

[0079] 2g TiO 2 - Carbon fiber composite material and 200mL deionized water are added to a high-pressure reactor lined with polytetrafluoroethylene, sealed and placed in a blast drying oven for heat treatment at 170°C for 12 hours. Af...

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Abstract

The invention discloses a TiO2-carbon fiber composite photocatalyst used for high salinity wastewater organic pollutant treatment and preparation thereof. The preparation comprises the following steps: (1) dispersing carbon fibers into absolute ethyl alcohol, and stirring in thermostatic water bath until a uniformly dispersed suspension system is formed; (2) stirring and adding tetrabutyl titanate into the suspension system at the same time, then heating until water bath temperature is higher than 80 DEG C, stirring and slowly dropwise adding deionized water, and stirring and reacting; (3) cooling to room temperature, then washing, filtering, and drying, so that a TiO2-carbon fiber nanocomposite is obtained; (4) mixing the TiO2-carbon fiber nanocomposite with water, forming a uniform suspension system under ultrasonic condition, then transferring into an autoclave, sealing, and then carrying out heat treatment at the temperature of 160-180 DEG C; and (5) cooling heat treatment reaction liquid, then separating, washing, and drying, so that the TiO2-carbon fiber composite photocatalyst is obtained. The TiO2-carbon fiber composite photocatalyst disclosed by the invention can effectively adsorb organic pollutants when being used in a high salinity water system and has efficient degradation activity when being excited by weak ultraviolet light.

Description

technical field [0001] The invention relates to the preparation of composite photocatalysts and the field of photocatalytic oxidation degradation of pollutants in saline wastewater systems, in particular to a TiO used for the treatment of organic pollutants in high-salt wastewater systems 2 - Preparation method of composite photocatalyst with weak light response of carbon fiber. Background technique [0002] The rapid development of my country's industrial economy has brought many increasingly serious new environmental pollution problems. The water pollution containing organic pollutants represented by dye wastewater in industrial and agricultural wastewater is one of the environmental pollution problems that need to be solved urgently. Due to the variety of industry and agriculture, the components of the wastewater produced are very complex, and the wastewater often contains a certain amount of salt concentration, such as coal chemical industry, chlor-alkali industry and pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J37/04B01J37/08C02F1/32C02F1/28C02F101/30C02F101/34C02F101/38
CPCC02F1/281C02F1/32B01J21/18B01J37/009B01J37/04B01J37/08C02F2305/10C02F2101/30C02F2101/345C02F2101/34C02F2101/40C02F2101/38B01J35/39
Inventor 王挺陈碧何龙程文武
Owner HANGZHOU JIUHE ENVIRONMENTAL PROTECTION TECH CO LTD
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