Method of utilizing graphene oxide (GO)/eosin Y compound to photo-catalytically degrade beta-lactam type antibiotic in water

A technology of lactams and antibiotics, applied in the field of environmental management, can solve the problems of low removal efficiency, harsh operating conditions, narrow application range, etc., and achieve the effect of simple removal method

Inactive Publication Date: 2018-12-07
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above methods have some disadvantages, such as harsh operating conditions, low removal efficien

Method used

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  • Method of utilizing graphene oxide (GO)/eosin Y compound to photo-catalytically degrade beta-lactam type antibiotic in water

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] Sequentially add 50 mg L to a clean 24-well culture plate -1 80 μL of cefaclor (CEC) solution, 1720 μL of pH 7.0 PBS buffer solution, 0.1 mg mL -1 The graphene oxide / eosin Y (GO / EY) dispersion was 200 μL, and the total volume was 2 mL. The multi-well plate was incubated in the dark for 45 min, and then irradiated with a white LED light for 4 h. Add ultrapure water to the volume before irradiation, centrifuge, measure the absorbance of the supernatant at a wavelength of 264 nm with an ultraviolet spectrophotometer, and calculate the removal efficiency.

Example Embodiment

[0014] Example 2

[0015] Sequentially add 50 mg L to a clean 24-well culture plate -1 80 μL of cefaclor (CEC) solution, 1720 μL of pH 7.0 PBS buffer solution, 0.1 mg mL -1 The graphene oxide / eosin Y (GO / EY) dispersion was 200 μL, and the total volume was 2 mL. The multi-well plate was incubated in the dark for 45 min, and then irradiated with a green LED light for 4 h. Add ultrapure water to the volume before irradiation, centrifuge, measure the absorbance of the supernatant at a wavelength of 264 nm with an ultraviolet spectrophotometer, and calculate the removal efficiency.

Example Embodiment

[0016] Example 3

[0017] Sequentially add 50 mg L to a clean 24-well culture plate -1 80 μL of cefaclor (CEC) solution, 1720 μL of pH 7.0 PBS buffer solution, 0.1 mg mL -1 The graphene oxide / eosin Y (GO / EY) dispersion was 200 μL, and the total volume was 2 mL. The multi-well plate was incubated in the dark for 45 min, and then irradiated with a white LED light for 6 h. Add ultrapure water to the volume before irradiation, centrifuge, measure the absorbance of the supernatant at a wavelength of 264 nm with an ultraviolet spectrophotometer, and calculate the removal efficiency.

[0018] The environmental water samples 1, 2, and 3 were treated with Examples 1, 2, and 3, respectively, and the removal effect was good. The results are shown in Table 1.

[0019] Table 1 Removal results of cefaclor (CEC) in actual water samples

[0020]

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Abstract

The invention discloses a method of utilizing a graphene oxide (GO)/eosin Y compound to photo-catalytically degrade beta-lactam type antibiotic in water. The composite material is prepared by bindinga dye (eosin Y) with GO through covalent bonds and has the advantages of GO such as strong adsorbing performance. At the same time, the photocatalytic performance of GO is greatly enhanced by the photosensitive dye. When the dye is illuminated, dye molecules are excited by light to generate electrons, which can reduce dissolved oxygen in a solution to generate strongly oxidative 1O2 and H2O2; and1O2 and H2O2 can oxidize and degrade beta-lactam type antibiotic adhered on the GO surface. The provided method has the characteristics of simple operation, rapidness, high efficiency, and large application range, and can utilize sunlight to process a water sample.

Description

technical field [0001] The invention relates to a method for photocatalytically degrading β-lactam antibiotics in water by a graphene oxide / eosin Y compound, which belongs to the field of environmental management. Background technique [0002] my country is the world's largest producer of APIs and a big country in the use of antibiotics. The production of APIs and the use of antibiotics will bring serious antibiotic pollution to environmental waters. Antibiotic pollution may induce and spread various types of antibiotic-resistant bacteria. It affects the human immune system, thereby threatening human health (Chen Fei. 2013. Preparation of magnetic surface imprinted composite photocatalyst and research on selective degradation of antibiotics [D]. Xi'an: Chang'an University.). At present, the methods used to remove β-lactam antibiotic pollutants mainly include physical and chemical methods, biological treatment methods, chlorination methods, and advanced oxidation treatment tec...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F101/38
CPCC02F1/30C02F2101/38
Inventor 许淑霞杨超陈强张信凤
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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