Catalyst for degrading antibiotics in water through photocatalysis as well as preparation method and application of catalyst

A photocatalyst and antibiotic technology, applied in the field of water treatment, can solve the problems of antibiotics entering the soil, ecological environment and human health hazards, water environment hazards, etc., and achieve the effects of easy control, high catalytic efficiency and simple process

Active Publication Date: 2015-05-13
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the stability and persistence of antibiotics, and their strong inhibitory effect on bacteria, it is difficult to remove them through natural biodegradation, and they are easy to accumulate. flow into soil and sediment
Excessive accumulation of antibiotics will lead to the production of microbial resistance genes, and even long-term exposure to antibiotics at trace levels will cause harm to the ecological environment and human health
A large amount of wastewater containing antibiotics is discharged, causing serious harm to the water environment

Method used

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  • Catalyst for degrading antibiotics in water through photocatalysis as well as preparation method and application of catalyst
  • Catalyst for degrading antibiotics in water through photocatalysis as well as preparation method and application of catalyst
  • Catalyst for degrading antibiotics in water through photocatalysis as well as preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of nano-powder precursor solution:

[0025] Stir and mix 0.895g of strontium acetate, 1.553g of antimony pentoxide (the molar ratio of strontium acetate to antimony pentoxide is 1.36:2) and 70 ml of deionized water at room temperature, adjust the pH to 5 with 4 mol / L nitric acid, Obtain nanopowder precursor liquid.

[0026] (2) Preparation of nano powders under hydrothermal conditions:

[0027] Put the above-mentioned nano-powder precursor solution in a 100 ml high-pressure reactor, heat it up to 100 °C at a rate of 5 °C / min and keep it warm for 24 h for hydrothermal reaction. Washed with absolute ethanol for 3 times, put in a drying oven and dried at 80°C to obtain Sr 1.36 Sb 2 o 6 catalyst of light.

Embodiment 2

[0029] (1) Preparation of nano-powder precursor solution:

[0030] Stir and mix 0.700g strontium acetate, 0.971g antimony pentoxide (the molar ratio of strontium acetate to antimony pentoxide is 1.70:2) and 65ml deionized water at room temperature, and adjust the pH to 1 with 6mol / L nitric acid to obtain nano Powder precursor.

[0031] (2) Preparation of nano powders under hydrothermal conditions:

[0032] Put the above-mentioned nano-powder precursor solution in a 100ml high-pressure reactor, heat it up to 180°C at a rate of 3°C / min and keep it warm for 10 hours for hydrothermal reaction. After the reaction is completed, naturally cool to room temperature and take it out. Washed with water and ethanol for 4 times, put into a drying oven and dry at 70°C to obtain Sr 1.36 Sb 2 o 6 catalyst of light.

Embodiment 3

[0034] (1) Preparation of nano-powder precursor solution:

[0035] Stir and mix 0.391g of strontium acetate, 0.647g of antimony pentoxide (the molar ratio of strontium acetate to antimony pentoxide is 1.90:2) and 75ml of deionized water at room temperature, and adjust the pH to 4 with 5mol / L nitric acid to obtain nano Powder precursor.

[0036] (2) Preparation of nano powders under hydrothermal conditions:

[0037] Put the above-mentioned nano-powder precursor solution in a 100ml high-pressure reactor, heat up to 200°C at a rate of 5°C / min and keep it warm for 6 hours for hydrothermal reaction. After the reaction is completed, naturally cool to room temperature and take it out. Washed with water and ethanol for 4 times, put into a drying oven and dry at 60°C to obtain Sr 1.36Sb 2 o 6 catalyst of light.

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Abstract

The invention discloses a catalyst for degrading antibiotics in water through photocatalysis as well as a preparation method and an application of the catalyst. The preparation method comprises steps as follows: 1), preparation of a nano-powder precursor solution : strontium acetate, antimony pentoxide and 65-75 ml of deionized water are stirred and mixed at the room temperature, the mole ratio of strontium acetate to antimony pentoxide is (1.35-2) :1, the PH is adjusted to 1-5 through 2-6 mol / L of nitric acid, and the nano-powder precursor solution is obtained; (2), preparation of nano-powder under the hydrothermal condition: the nano-powder precursor solution is placed in a 100 ml of high-pressure reaction kettle, is heated to the temperature of 100-200 DEG C at the speed of 1-5 DEG C / min, has a hydrothermal reaction for 6-48 h, is naturally cooled to the room temperature after the reaction ends, and then is taken out, a product is cleaned for 3-5 times with deionized water and absolute ethyl alcohol and put in a drying box to be dried at the temperature of 60-80 DEG C, and a photocatalyst is obtained. The photocatalyst prepared with the preparation method and used for degrading antibiotics in water through photocatalysis can be used for photocatalysis treatment on antibiotics in sewage, and the degradation rate is higher than 89%.

Description

technical field [0001] The invention belongs to the field of water treatment, and relates to a treatment method for antibiotics in the water phase, specifically reduced to a method using strontium antimonate (Sr 1.36 Sb 2 o 6 ) photocatalytic degradation of antibiotics in water. Background technique [0002] Antibiotics are a class of secondary metabolites produced by organisms (including microorganisms and higher animals and plants) in the course of life, which have anti-pathogen or other activities, and organic substances that can interfere with the development and function of other living cells. Since penicillin was used clinically in the early 1840s, antibiotics have been widely studied because of their great functions, such as inhibiting and killing bacteria, molds, mycoplasma, chlamydia and other pathogenic microorganisms. and apply. At present, antibiotics are not only used to treat various human clinical diseases, such as sterilization and anti-inflammation; they...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/18C02F1/30C02F101/34C02F101/38
CPCY02W10/37
Inventor 薛珲陈庆华赖深伟黄宝铨钱庆荣肖荔人刘欣萍
Owner FUJIAN NORMAL UNIV
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