Application of compound with quinoid structure in visible light degradation of bisphenol A

A visible light and compound technology, which is applied in special compound water treatment, organic compound/hydride/coordination complex catalyst, chemical/physical process, etc. and other problems to achieve the effect of avoiding difficult shape control, avoiding poor reproducibility and simple operation

Pending Publication Date: 2018-11-06
YANCHENG TEACHERS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these strategies have greatly improved the light absorption performance of the catalyst, such as Zhu reported that TCNQ and PTCDI prepared a composite organic visible photocatalyst to degrade bisphenol A through π-π interaction, but the composite material also has poor reproducibility, Requires precise control of morphology and catalysts are easy to separate and unstable

Method used

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  • Application of compound with quinoid structure in visible light degradation of bisphenol A
  • Application of compound with quinoid structure in visible light degradation of bisphenol A
  • Application of compound with quinoid structure in visible light degradation of bisphenol A

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Accurately weigh 2 mg of catalyst and 0.20 mL of hydrogen peroxide (mass fraction 30 %) into a reaction flask, add 100 mL of bisphenol A aqueous solution with a concentration of 0.04 mM, and use 0.1 mol / L hydrochloric acid Adjust the pH value of the solution to 2. Place the device in a photocatalytic reaction apparatus. Before turning on the light, it is a dark room. Stir vigorously until the catalyst is evenly dispersed. At this time, take the first sample and mark the initial concentration C of bisphenol A. 0 . Turn on the 250 W xenon lamp light source (wavelength 420 nm-750 nm) and time it, and take samples at 30 min, 60 min, 90 min and 120 min respectively. After the suspension passes through a 0.45 um nylon filter membrane to remove the catalyst, the filtrate passes through Phase chromatography analysis showed that the degradation rate of bisphenol A was 84% ​​in 120 min.

Embodiment 2

[0026] Accurately weigh 2 mg of catalyst and 0.20 mL of hydrogen peroxide (mass fraction 30 %) into a reaction flask, add 100 mL of bisphenol A aqueous solution with a concentration of 0.04 mM, and use 0.1 mol / L hydrochloric acid The pH value of the solution is adjusted to 5, and the device is placed in a photocatalytic reaction instrument. Before the light is turned on, it is a dark room. Stir vigorously until the catalyst is evenly dispersed. At this time, take the first sample and mark the initial concentration of bisphenol A C 0 . Turn on the 250 W xenon lamp light source (wavelength 420 nm-750 nm) and time it, and take samples at 30 min, 60 min, 90 min and 120 min respectively. After the suspension passes through a 0.45 um nylon filter membrane to remove the catalyst, the filtrate passes through Phase chromatography analysis records that the degradation rate of bisphenol A is 98% in 120 min, the results are as follows image 3 shown.

Embodiment 3

[0028] Accurately weigh 2 mg of catalyst and measure 0.20 mL of hydrogen peroxide (30% mass fraction) into a reaction flask, add 100 mL of bisphenol A aqueous solution with a concentration of 0.04 mM, and use 0.1 mol / L NaOH Adjust the pH value of the solution to 9. Place the device in a photocatalytic reaction apparatus. Before turning on the light, it is a dark room. Stir vigorously until the catalyst is evenly dispersed. At this time, take the first sample and mark the initial concentration of bisphenol A C 0 . Turn on the 250 W xenon lamp light source (wavelength 420 nm-750 nm) and time it, and take samples at 30 min, 60 min, 90 min and 120 min respectively. After the suspension passes through a 0.45 um nylon filter membrane to remove the catalyst, the filtrate passes through Phase chromatography analysis showed that the degradation rate of bisphenol A was 69% in 120 min.

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Abstract

The invention provides application of a compound with a quinoid structure in visible light degradation of bisphenol A. The compound has a narrower optical band gap, and absorption spectrum is expandedin a near infrared region. The invention provides a method for dissolving bisphenol A in a water solution with the compound as a catalyst and a hydrogen peroxide solution. Through the regulation of the pH value and the addition volume of hydrogen peroxide, the degradation rate of the catalyst to 0.04 mM of bisphenol A in 120th minute reaches 98%. The catalyst prepared according to the preparationmethod has the advantages of being simple in operation, easy to separate, high in cycling stability and the like, the problems that the morphology of a composite material is difficult to control andthe reproducibility of the composite material is poor are solved, a new material is provided for degrading bisphenol A in the environment, and a new thought is provided for researching organic photoelectric materials in the field of environment purification.

Description

technical field [0001] The invention belongs to the field of organic conjugated small molecule synthesis and environmental purification, and relates to the application of a class of quinone structure compounds in visible light degradation of bisphenol A. Background technique [0002] 2,2-bis(4-hydroxyphenyl)propane (Bisphenol A, also known as bisphenol A or BPA), is mainly used to prepare various polymer materials such as epoxy resin and polycarbonate, and can be used as plasticizer, Flame retardant, rubber anti-aging agent and other fine chemical products. Bisphenol A has a function similar to estrogen, and it is easy to cause premature puberty in females, and it also has certain toxicity and teratogenicity. In particular, bisphenol A in plastic products such as plastic feeding bottles may affect the growth and development of infants and young children. Therefore, the degradation of bisphenol A present in plastics, medical devices and food packaging bags has become one of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C02F1/30C02F1/72A62D3/17C07D487/04C02F103/38C02F101/34
CPCB01J31/0248A62D3/17A62D2101/28B01J35/004C02F1/30C02F1/722C02F1/725C02F2101/345C02F2103/38C02F2305/10C07D487/04
Inventor 邢蓉孙世新孙瑞王华方东李振兴
Owner YANCHENG TEACHERS UNIV
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