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TiO2-doped Co composite photocatalyst, preparation method thereof and application of TiO2-doped Co composite photocatalyst in treatment of phenolic wastewater

A composite light and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of low efficiency in degradation of organic matter, and achieve uniform and stable chemical composition , good catalytic effect, environmentally friendly effect

Inactive Publication Date: 2021-02-26
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One of the purposes of the present invention is to use TiO 2 Doped with Co and combined with the characteristics of the co-precipitation method, a TiO 2 Preparation method of doped Co composite photocatalyst

Method used

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  • TiO2-doped Co composite photocatalyst, preparation method thereof and application of TiO2-doped Co composite photocatalyst in treatment of phenolic wastewater
  • TiO2-doped Co composite photocatalyst, preparation method thereof and application of TiO2-doped Co composite photocatalyst in treatment of phenolic wastewater

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Experimental program
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Effect test

Embodiment 1

[0029] TiO 2 Doped Co composite photocatalyst, preparation method comprises the steps:

[0030] 1. Slowly drop 10ml of tetrabutyl titanate into 40ml of absolute ethanol, stir vigorously at room temperature for 40min to obtain a light yellow liquid.

[0031] 2. Take 10ml of absolute ethanol, 5ml of glacial acetic acid, 5ml of concentrated nitric acid and 5ml of cobalt nitrate aqueous solution with a concentration of 0.4mol / L, and stir evenly to obtain a light red solution.

[0032] 3. Add the light red solution obtained in step 2 to the light yellow liquid obtained in step 1 dropwise, stir for 1 hour, let it settle at room temperature for 48 hours, and filter to collect the solid.

[0033] 4. Wash the solid matter obtained in step 3 with ultrapure water and absolute ethanol, and put it into an oven at 110° C. to dry to obtain solid particles.

[0034] 5. Put the solid particles obtained in step 4 into a mortar and grind them into powder, then move them to a crucible, put them...

Embodiment 2

[0035] Example 2 TiO 2 Application of Co-doped Composite Photocatalyst in Catalytic Degradation of Nonylphenol

[0036] The method is as follows: In the solution containing nonylphenol, adjust the initial concentration of nonylphenol to 15-25mg / L, add TiO 2 Doped Co composite photocatalyst, photocatalytic degradation for 300min. Add 0.05-0.25g of TiO to every 100mL of nonylphenol solution with an initial concentration of 15-25mg / L 2 Doped Co composite photocatalyst.

[0037] The degradation rate of nonylphenol solution can be calculated by the following formula:

[0038] Q=(C 0 -C t ) / C 0 ×100%

[0039] Among them, Q is the degradation rate of nonylphenol solution, C 0 is the initial concentration of nonylphenol solution, C t For adding TiO 2 Concentration of nonylphenol solution at time t after doping Co composite photocatalyst.

[0040] (1) TiO prepared with different Co doping amounts 2 Effect of Co-doped Composite Photocatalyst on Catalytic Degradation of Nonyl...

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Abstract

The invention discloses a TiO2-doped Co composite photocatalyst, a preparation method thereof and an application of the TiO2-doped Co composite photocatalyst in treatment of phenolic wastewater. The preparation method comprises the following steps: slowly dropwise adding tetrabutyl titanate into absolute ethyl alcohol, and violently stirring for 30-60 minutes at room temperature to obtain a mixedsolution A; taking absolute ethyl alcohol, glacial acetic acid, concentrated nitric acid and a cobalt nitrate aqueous solution, and uniformly stirring to obtain a mixed solution B; and dropwise addingthe mixed solution B into the mixed solution A, stirring, standing for precipitation, washing the obtained solid with ultrapure water and absolute ethyl alcohol, drying at 100-120 DEG C, grinding theobtained solid particles into powder, calcining in a muffle furnace, cooling, and grinding again to obtain the TiO2-doped Co composite photocatalyst. The TiO2-doped Co composite photocatalyst prepared by the method has very strong electron obtaining ability, changes the movement conditions of electrons and holes, and greatly improves the photocatalytic activity.

Description

technical field [0001] The invention relates to the technical field of synthesis and photocatalytic degradation of nanomaterials, in particular to a TiO 2 Preparation method of Co-doped composite photocatalyst and application as photocatalyst in degradation of nonylphenol. Background technique [0002] In recent years, due to the increasing energy consumption and water pollution problems, the use of photocatalytic technology to degrade some organic pollutants has attracted widespread attention. In photocatalytic technology, titanium dioxide has good chemical stability and low cost. And other advantages, it has become a commonly used catalyst material in the field of water pollution treatment. However, titanium dioxide itself also has certain defects, such as not being suitable for treating high-concentration wastewater, difficult secondary recovery, and requiring a high external light source, which is easy to recombine with excited electrons, resulting in a decrease in phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75C02F1/30C02F101/30C02F101/34
CPCB01J23/75C02F1/30C02F2305/10C02F2101/30C02F2101/345B01J35/39
Inventor 包红旭苗贺胡家伟巨承文刘洪源王淑桐延晨波王翰林贾浩琛
Owner LIAONING UNIVERSITY
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