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Preparation method of photocatalyst with super-strong degradation effect

A photocatalyst and super-powerful technology, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low degradation efficiency and insufficient material degradation effect, and achieve surface Strong activity and the effect of improving catalytic efficiency

Active Publication Date: 2020-11-13
HARBIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]The existing photocatalysts have certain effects in catalyzing refractory organic matter, but the degradation efficiency is not high, and the maximum degradation of the material has not been fully exerted Effect

Method used

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  • Preparation method of photocatalyst with super-strong degradation effect

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Effect test

Embodiment 1

[0030] A preparation method of a photocatalyst with a super-strong degradation effect provided by the invention;

[0031] Including the following steps:

[0032] Titanium dioxide pretreatment:

[0033] S1: Calcining titanium dioxide in sections, the specific sections are as follows: continuous calcination at 100°C for 30 minutes, continuous calcination at 200°C for 30 minutes, continuous calcination at 400°C for 60 minutes, continuous calcination at 800°C for 60 minutes, and grinding and filtering after calcination to obtain Titanium dioxide powder;

[0034] S2: Take titanium dioxide powder and anhydrous toluene into a single-necked flask, and treat it under ultrasonic wave for 5-15 minutes to fully disperse;

[0035] S3: Then add an aqueous solution containing hydrogen fluoride and sodium fluoride to the single-necked flask. In the aqueous solution containing hydrogen fluoride and sodium fluoride, the mass percentage of hydrogen fluoride and sodium fluoride is 2:1, and reac...

Embodiment 2

[0041] A preparation method of a photocatalyst with a super-strong degradation effect provided by the invention;

[0042] Including the following steps:

[0043] Titanium dioxide pretreatment:

[0044] S1: Calcining titanium dioxide in sections, the specific sections are as follows: continuous calcination at 100°C for 30 minutes, continuous calcination at 200°C for 30 minutes, continuous calcination at 400°C for 60 minutes, continuous calcination at 800°C for 60 minutes, and grinding and filtering after calcination to obtain Titanium dioxide powder;

[0045] S2: Take titanium dioxide powder and anhydrous toluene into a single-necked flask, and treat it under ultrasonic wave for 5-15 minutes to fully disperse;

[0046] S3: Then add an aqueous solution containing hydrogen fluoride and sodium fluoride to the single-necked flask. In the aqueous solution containing hydrogen fluoride and sodium fluoride, the mass percentage of hydrogen fluoride and sodium fluoride is 2:1, and reac...

Embodiment 3

[0052] A preparation method of a photocatalyst with a super-strong degradation effect provided by the invention;

[0053] Including the following steps:

[0054] Titanium dioxide pretreatment:

[0055] S1: Calcining titanium dioxide in sections, the specific sections are as follows: continuous calcination at 100°C for 30 minutes, continuous calcination at 200°C for 30 minutes, continuous calcination at 400°C for 60 minutes, continuous calcination at 800°C for 60 minutes, and grinding and filtering after calcination to obtain Titanium dioxide powder;

[0056] S2: Take titanium dioxide powder and anhydrous toluene into a single-necked flask, and treat it under ultrasonic wave for 5-15 minutes to fully disperse;

[0057] S3: Then add an aqueous solution containing hydrogen fluoride and sodium fluoride to the single-necked flask. In the aqueous solution containing hydrogen fluoride and sodium fluoride, the mass percentage of hydrogen fluoride and sodium fluoride is 2:1, and reac...

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Abstract

The invention provides a preparation method of a photocatalyst with a super-strong degradation effect, and relates to the technical field of photocatalysts. The preparation method comprises the following steps: taking titanium dioxide, carrying out segmented calcination, grinding and filtering so that titanium dioxide powder is obtained, adding titanium dioxide powder and anhydrous toluene into asingle-neck flask, carrying out ultrasonic treatment for 5-15 minutes to fully disperse the titanium dioxide powder and anhydrous toluene, adding an aqueous solution containing hydrogen fluoride and sodium fluoride into the single-neck flask, reacting for 4-6 hours under magnetic stirring, filtering, drying in vacuum to obtain surface-fluorinated nano titanium dioxide particles, adding the nano titanium dioxide particles subjected to surface fluorination treatment and ferroferric oxide powder into a sodium hydroxide solution, uniformly stirring, transferring into a water bath kettle, carryingout water bath reaction, filtering after the water bath reaction to obtain a precipitate, dissolving the precipitate in deionized water, adjusting the pH value of the obtained solution, carrying out suction filtration, drying the obtained product in an oven at 80 DEG C to obtain a compound, and calcining the compound in sections to obtain the photocatalyst.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to a method for preparing a photocatalyst with a super-strong degradation effect. Background technique [0002] With the development of industry, environmental problems have become increasingly prominent, especially the problem of refractory organic pollutants. It is an urgent and urgent task to find effective methods to remove organic pollutants, which has attracted great attention from governments and people in various countries. [0003] Refractory organic pollutants refer to poisonous and harmful organic substances that are decomposed by microorganisms very slowly and incompletely under natural conditions. Such pollutants have low solubility and are easy to accumulate in organisms, and they also precipitate into the bottom mud and become water bodies. Refractory organic pollutants include polycyclic aromatic hydrocarbons, halogenated hydrocarbons, heterocyclic compounds, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/08B01J27/135B01J37/10B01J37/26C02F1/72C02F1/30C02F101/30
CPCB01J21/063B01J37/08B01J27/135B01J37/10B01J37/26C02F1/725C02F1/30C02F2101/30C02F2305/10B01J35/39Y02W10/37
Inventor 张明义
Owner HARBIN NORMAL UNIVERSITY
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