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Preparation and application for g-C3N4-TiO2/HNTs composite photocatalyst

A technology of g-c3n4-tio2 and composite light, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, water/sludge/sewage treatment, etc., can solve the problems of difficult recycling, low solar energy utilization rate, and reduced specific surface area And other issues

Inactive Publication Date: 2018-02-16
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 There are also some shortcomings in itself, such as low utilization rate of solar energy; small particles, not easy to recycle, not conducive to recycling; easy to agglomerate during use, so that the specific surface is reduced, thereby affecting its photocatalytic activity, etc.

Method used

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  • Preparation and application for g-C3N4-TiO2/HNTs composite photocatalyst
  • Preparation and application for g-C3N4-TiO2/HNTs composite photocatalyst
  • Preparation and application for g-C3N4-TiO2/HNTs composite photocatalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) TiO 2 Preparation of / HNTs:

[0030] Add 2mL of n-butyl titanate and 12mL of absolute ethanol into the beaker, and stir magnetically to form a uniform solution; then add 1mL of glacial acetic acid, and stir magnetically; then add 1.0g halloysite into the above solution, continue Stir to obtain a suspension. Then 1.5 mL of deionized water and 2 mL of absolute ethanol were mixed and slowly added dropwise to the suspension, and stirred continuously for 24 hours to form a sol-gel. The sol-gel was dried in a drying oven. Then put the obtained xerogel into agate mortar and grind it into powder, put it into a muffle furnace for calcination at 500°C for 2h, wash, centrifuge, dry, and grind it into powder to obtain TiO 2 / HNTs;

[0031] (2)g-C 3 N 4 -TiO 2 / HNTs composite photocatalyst preparation:

[0032] Weigh 0.2g and get melamine and join in the agate mortar, then take by weighing the TiO prepared by 1.0g step (1) 2 / HNTs were added to the above mortar and grou...

Embodiment 2

[0035] (1) TiO 2 Preparation of / HNTs:

[0036]Add 2mL of n-butyl titanate and 12mL of absolute ethanol into the beaker, and stir magnetically to form a uniform solution; then add 1mL of glacial acetic acid, and stir magnetically; then add 1.0g halloysite into the above solution, continue Stir to obtain a suspension. Then 1.5 mL of deionized water and 2 mL of absolute ethanol were mixed and slowly added dropwise to the suspension, and stirred continuously for 24 hours to form a sol-gel. The sol-gel was dried in a drying oven. Then put the obtained xerogel into agate mortar and grind it into powder, put it into a muffle furnace for calcination at 500°C for 2h, wash, centrifuge, dry, and grind it into powder to obtain TiO 2 / HNTs

[0037] (2)g-C 3 N 4 -TiO 2 / HNTs composite photocatalyst preparation:

[0038] Weigh 0.5g and get melamine and join in the agate mortar, then weigh the TiO prepared by 1.0g step (1) 2 / HNTs were added to the above mortar and ground thoroughly...

Embodiment 3

[0041] (1) TiO 2 Preparation of / HNTs:

[0042] Add 2mL of n-butyl titanate and 12mL of absolute ethanol into the beaker, and stir magnetically to form a uniform solution; then add 1mL of glacial acetic acid, and stir magnetically; then add 1.0g halloysite into the above solution, continue Stir to obtain a suspension. Then 1.5 mL of deionized water and 2 mL of absolute ethanol were mixed and slowly added dropwise to the suspension, and stirred continuously for 24 hours to form a sol-gel. The sol-gel was dried in a drying oven. Then put the obtained xerogel into agate mortar and grind it into powder, put it into a muffle furnace for calcination at 500°C for 2h, wash, centrifuge, dry, and grind it into powder to obtain TiO 2 / HNTs

[0043] (2)g-C 3 N 4 -TiO 2 / HNTs composite photocatalyst preparation:

[0044] Weigh 0.8g and get melamine and join in the agate mortar, then take by weighing the TiO prepared by 1.0g step (1) 2 / HNTs were added to the above mortar and groun...

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Abstract

The present invention relates to a preparation method and application for a g-C3N4-TiO2 / HNTs composite photocatalyst. The method comprises the following steps: n-butyl titanate and absolute ethyl alcohol are added into a beaker, and magnetic stirring is performed to form a uniform solution; glacial acetic acid is added, and magnetic stirring is performed; halloysite is added into the above solution, and stirring is continued to obtain a suspension liquid; deionized water and absolute ethyl alcohol are mixed, the mixed liquid is slowly added into the suspension liquid, and stirring is performedcontinuously to form a sol-gel; the sol-gel is placed into a drying oven, and drying is performed; the obtained xerogel is ground into powder, the powder is put into a muffle furnace, calcination isperformed, washing is performed, centrifugation is performed, drying is performed, the dried material is ground into powder, and therefore TiO2 / HNTs is obtained; melamine is weighed, the weighed melamine and the TiO2 / HNTs are mixed, grinding is performed fully, the obtained material is put into a muffle furnace, calcination is performed, natural cooling is performed to a room temperature, taking out the cooled material, the cooled material is ground into powder, and therefore the final product is obtained. According to the invention, the purpose of degrading antibiotic wastewater by taking theg-C3N4-TiO2 / HNTs nano composite material as the photocatalyst is realized.

Description

technical field [0001] The present invention relates to a g-C 3 N 4 -TiO 2 The preparation and application of the / HNTs composite photocatalyst belong to the technical field of environmental material preparation. Background technique [0002] Antibiotics are a class of chemicals produced by certain microorganisms that kill or inhibit the proliferation of certain microorganisms and other cells at high dilutions. Since penicillin was discovered and applied clinically in 1940, antibiotics have developed rapidly and are widely used in the treatment and prevention of human and animal diseases, as well as in the improvement of growth efficiency in animal breeding, but the Antibiotics cannot be completely absorbed by the body, and about 90% of them are excreted into the environment in the form of antibiotic prototypes or metabolites through the feces and urine of patients and animals, polluting water and soil in different ways, and bringing harm to human health. harm. Ciproflo...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J37/04B01J35/02B01J37/08C02F1/30C02F1/72C02F101/34C02F101/36C02F101/38
CPCC02F1/30C02F1/725B01J27/24B01J37/04B01J37/08C02F2101/34C02F2101/38C02F2101/36C02F2305/10C02F2305/023B01J35/00B01J35/30B01J35/39
Inventor 吴东遥李金择关静茹刘重阳王会琴马长畅朱志霍鹏伟闫永胜
Owner JIANGSU UNIV
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