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Composite photocatalyst and its preparation method and application

A technology of catalyst and compound light, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalyst, etc., which can solve the problems of biodegradation, fetal teratogenicity, and human health etc. to achieve the effects of increasing the specific surface area and surface active sites, reducing reaction costs, and excellent photocatalytic activity

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

AI Technical Summary

Problems solved by technology

Antibiotics are drugs used to treat various non-viral infections, but many side effects have been shown in clinical use. Studies have shown that some antibiotics have teratogenic effects on fetuses
Tetracyclines are the most widely used antibiotics in clinical practice. Because of their good water solubility, most of them are excreted in the original form after metabolism in the body, and they are not easy to biodegrade in the environment, they are easy to dissolve in the water environment. Storage and accumulation form environmental residues, leading to a series of ecological pollution and human health problems
So far, no simple and rapid one-step solvothermal method has been found on g-C 3 N 4 Surface modified Fe 3 o 4 Nanospheres build Fe 3 o 4 / g -C 3 N 4 Mesoporous Composite Photocatalyst

Method used

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  • Composite photocatalyst and its preparation method and application
  • Composite photocatalyst and its preparation method and application
  • Composite photocatalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: 10wt% Fe 3 o 4 / g -C 3 N 4 Preparation of Mesoporous Composite Photocatalyst

[0032] 1. Preparation of g-C 3 N 4 catalyst of light

[0033] 1. Put melamine into an open crucible and heat at 2°C min -1 The heating rate is from room temperature to 550°C and kept for 4h.

[0034] 2. After cooling to room temperature, take out the yellow solid and grind it to powder with an agate mortar to obtain mesoporous g-C 3 N 4 catalyst of light.

[0035] 2. Preparation of 10wt% Fe 3 o 4 / g -C 3 N 4 Mesoporous Composite Photocatalyst

[0036] 1. Weigh 0.1750g of ferric chloride hexahydrate and dissolve it in 35mL of ethylene glycol and stir to obtain solution A.

[0037] 2. Add 3.6 g of sodium acetate to solution A to form solution B.

[0038] 3. Add 0.5g of g-C to solution B 3 N 4 , magnetically stirred for 12 h to form solution C.

[0039] 4. Transfer the solution C to a reaction kettle, and react in an oven at 200° C. for 6 hours.

[0040] 5. After n...

Embodiment 2

[0041] Example 2: 15wt% Fe 3 o 4 / g -C 3 N 4 Preparation of Mesoporous Composite Photocatalyst

[0042] 1. Preparation of g-C 3 N 4 catalyst of light

[0043] 1. Put melamine into an open crucible and heat at 2°C min -1 The heating rate is from room temperature to 550°C and kept for 4h.

[0044] 2. After cooling to room temperature, take out the yellow solid and grind it to powder with an agate mortar to obtain mesoporous g-C 3 N 4 catalyst of light.

[0045] 2. Preparation of 15wt% Fe 3 o 4 / g -C 3 N 4 Mesoporous Composite Photocatalyst

[0046] 1. Weigh 0.2625g of ferric chloride hexahydrate and dissolve it in 35mL of ethylene glycol and stir to obtain solution A.

[0047] 2. Add 3.6 g of sodium acetate to solution A to form solution B.

[0048] 3. Add 0.5g of g-C to solution B 3 N 4 , magnetically stirred for 12 h to form solution C.

[0049] 4. Transfer the solution C to a reaction kettle, and react in an oven at 200° C. for 6 hours.

[0050] 5. After n...

Embodiment 3

[0051] Example 3: 20wt% Fe 3 o 4 / g -C 3 N 4Mesoporous Composite Photocatalyst

[0052] 1. Preparation of g-C 3 N 4 catalyst of light

[0053] 1. Put melamine into an open crucible and heat at 2°C min -1 The heating rate is from room temperature to 550°C and kept for 4h.

[0054] 2. After cooling to room temperature, take out the yellow solid and grind it to powder with an agate mortar to obtain mesoporous g-C 3 N 4 catalyst of light.

[0055] 2. Preparation of 20wt% Fe 3 o 4 / g -C 3 N 4 Mesoporous Composite Photocatalyst

[0056] 1. Weigh 0.3501g of ferric chloride hexahydrate and dissolve it in 35mL of ethylene glycol and stir to obtain solution A.

[0057] 2. Add 3.6 g of sodium acetate to solution A to form solution B.

[0058] 3. Add 0.5g of g-C to solution B 3 N 4 , magnetically stirred for 12 h to form solution C.

[0059] 4. Transfer the solution C to a reaction kettle, and react in an oven at 200° C. for 6 hours.

[0060] 5. After naturally cooling...

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Abstract

The invention belongs to the technical field of photocatalytic material synthesis, and particularly relates to a composite photocatalyst and its preparation method and an application. The composite photocatalyst can be applied to degrade tetracycline hydrochloride pollutant under the visible light. The preparation method includes steps of exactly weighing hexahydrated ferric trichloride in ethylene glycol and stirring to obtain solution A; adding sodium acetate in solution A to form solution B; adding g-C3N4 in the solution B, and stirring to form solution C; transferring the solution C to a reaction kettle; reacting for 6 hours in an oven at 200 DEG C; after naturally cooling to room temperature, centrifuging, washing and drying to obtain a sample.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic material synthesis, and utilizes a simple and fast solvothermal method to synthesize Fe 3 o 4 Nanosphere modified g-C 3 N 4 Fe 3 o 4 / g -C 3 N 4 A mesoporous composite photocatalyst for the degradation of tetracycline hydrochloride pollutants under visible light. Background technique [0002] China is a big country in the use and production of antibiotics. A small part of the annual production of antibiotic raw materials is exported, and most of the rest is for self-use (including medical and agricultural use). The per capita annual consumption is about 138g, while the per capita annual consumption of the United States is only 13g according to statistics. According to the 2006-2007 National Bacterial Resistance Surveillance Results of the Ministry of Health, the annual utilization rate of antibacterial drugs in hospitals nationwide is as high as 74%, while in developed countries such...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J31/28B01J37/08C02F1/30C02F103/34
CPCC02F1/30B01J27/24B01J31/28B01J37/08B01J37/088C02F2103/343C02F2305/10B01J35/39
Inventor 董红军吴海君李春梅刘春波车慧楠张晓旭艾俊哲
Owner JIANGSU UNIV
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